1
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Sasahara Y, Terada R, Ubukata H, Asahi M, Kato D, Tsumori T, Namba M, Wei Z, Tassel C, Kageyama H. Mechanochemical Synthesis of Perovskite Oxyhydrides: Insights from Shear Modulus. J Am Chem Soc 2024; 146:11694-11701. [PMID: 38631694 DOI: 10.1021/jacs.3c14087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Perovskite oxyhydrides have attracted recent attention due to their intriguing properties such as ionic conductivity and catalysis, but their repertoire is still restricted compared to perovskite oxynitrides and oxyfluorides. Historically, perovskite oxyhydrides have been prepared mostly by topochemical reactions and high-pressure (HP) reactions, while in this study, we employed a mechanochemical (MC) approach, which enables the synthesis of a series of ABO2H-type oxyhydrides, including those with the tolerance factor (t) much smaller than 1 (e.g., SrScO2H with t = 0.936) which cannot be obtained by HP synthesis. The octahedral tilting, often present in perovskite oxides, does not occur, suggesting that the lack of π-symmetry of the H 1s orbital and the large polarization destabilize tilted low-symmetry structures. Interestingly, SrCrO2H (t = 0.997), previously reported with the HP method, was not achieved with the MC method. A comparative analysis revealed a correlation between the feasibility of MC reactions and the (calculated) shear modulus of the starting reagents (binary oxides and hydrides). Notably, this indicator is not exclusive to oxyhydride perovskites but extends to oxide perovskites (SrMO3). This study demonstrates that MC synthesis offers unique opportunities not only to expand the compositional space in oxyhydrides in various structural types but also to provide a guide for the choice of starting materials for the synthesis of other compounds.
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Affiliation(s)
- Yuki Sasahara
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Rina Terada
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroki Ubukata
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Miho Asahi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Daichi Kato
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
| | - Tatsuya Tsumori
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Morito Namba
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Zefeng Wei
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Cédric Tassel
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroshi Kageyama
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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2
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He Y, Li Y, Lei M, Polo-Garzon F, Perez-Aguilar J, Bare SR, Formo E, Kim H, Daemen L, Cheng Y, Hong K, Chi M, Jiang DE, Wu Z. Significant Roles of Surface Hydrides in Enhancing the Performance of Cu/BaTiO 2.8 H 0.2 Catalyst for CO 2 Hydrogenation to Methanol. Angew Chem Int Ed Engl 2024; 63:e202313389. [PMID: 37906130 DOI: 10.1002/anie.202313389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/24/2023] [Accepted: 10/31/2023] [Indexed: 11/02/2023]
Abstract
Tuning the anionic site of catalyst supports can impact reaction pathways by creating active sites on the support or influencing metal-support interactions when using supported metal nanoparticles. This study focuses on CO2 hydrogenation over supported Cu nanoparticles, revealing a 3-fold increase in methanol yield when replacing oxygen anions with hydrides in the perovskite support (Cu/BaTiO2.8 H0.2 yields ~146 mg/h/gCu vs. Cu/BaTiO3 yields ~50 mg/h/gCu). The contrast suggests that significant roles are played by the support hydrides in the reaction. Temperature programmed reaction and isotopic labelling studies indicate that BaTiO2.8 H0.2 surface hydride species follow a Mars van Krevelen mechanism in CO2 hydrogenation, promoting methanol production. High-pressure steady-state isotopic transient kinetic analysis (SSITKA) studies suggest that Cu/BaTiO2.8 H0.2 possesses both a higher density and more active and selective sites for methanol production compared to Cu/BaTiO3 . An operando high-pressure diffuse reflectance infrared spectroscopy (DRIFTS)-SSITKA study shows that formate species are the major surface intermediates over both catalysts, and the subsequent hydrogenation steps of formate are likely rate-limiting. However, the catalytic reactivity of Cu/BaTiO2.8 H0.2 towards the formate species is much higher than Cu/BaTiO3 , likely due to the altered electronic structure of interface Cu sites by the hydrides in the support as validated by density functional theory (DFT) calculations.
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Affiliation(s)
- Yang He
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
| | - Yuanyuan Li
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
| | - Ming Lei
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN-37235, USA
| | - Felipe Polo-Garzon
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
| | - Jorge Perez-Aguilar
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA-94025, USA
| | - Simon R Bare
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA-94025, USA
| | - Eric Formo
- Georgia Electron Microscopy, University of Georgia, Athens, GA-30602, USA
| | - Hwangsun Kim
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
| | - Luke Daemen
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
| | - Yongqiang Cheng
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
| | - Kunlun Hong
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
| | - Miaofang Chi
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
| | - De-En Jiang
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN-37235, USA
| | - Zili Wu
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN-37831, USA
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3
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Besara T, Ramirez DC, Sun J, Falb NW, Lan W, Whalen JB, Singh DJ, Siegrist T. Locating anionic hydrogen in Ba3(Yb,Lu)2O5H2: A combined approach of X-ray diffraction, crystal chemistry, and DFT calculations. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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4
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Bai Q, Duan Y, Lian J, Wang X. Computation-accelerated discovery of the K2NiF4-type oxyhydrides combing density functional theory and machine learning approach. Front Chem 2022; 10:964953. [PMID: 36092671 PMCID: PMC9458981 DOI: 10.3389/fchem.2022.964953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 07/29/2022] [Indexed: 11/13/2022] Open
Abstract
The emerging K2NiF4-type oxyhydrides with unique hydride ions (H−) and O2- coexisting in the anion sublattice offer superior functionalities for numerous applications. However, the exploration and innovations of the oxyhydrides are challenged by their rarity as a limited number of compounds reported in experiments, owing to the stringent laboratory conditions. Herein, we employed a suite of computations involving ab initio methods, informatics and machine learning to investigate the stability relationship of the K2NiF4-type oxyhydrides. The comprehensive stability map of the oxyhydrides chemical space was constructed to identify 76 new compounds with good thermodynamic stabilities using the high-throughput computations. Based on the established database, we reveal geometric constraints and electronegativities of cationic elements as significant factors governing the oxyhydrides stabilities via informatics tools. Besides fixed stoichiometry compounds, mixed-cation oxyhydrides can provide promising properties due to the enhancement of compositional tunability. However, the exploration of the mixed compounds is hindered by their huge quantity and the rarity of stable oxyhydrides. Therefore, we propose a two-step machine learning workflow consisting of a simple transfer learning to discover 114 formable oxyhydrides from thousands of unknown mixed compositions. The predicted high H− conductivities of the representative oxyhydrides indicate their suitability as energy conversion materials. Our study provides an insight into the oxyhydrides chemistry which is applicable to other mixed-anion systems, and demonstrates an efficient computational paradigm for other materials design applications, which are challenged by the unavailable and highly unbalanced materials database.
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Affiliation(s)
- Qiang Bai
- *Correspondence: Qiang Bai, ; Xiaomin Wang,
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5
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Wang K, Wu Z, Jiang DE. Ammonia synthesis on BaTiO 2.5H 0.5: computational insights into the role of hydrides. Phys Chem Chem Phys 2021; 24:1496-1502. [PMID: 34935803 DOI: 10.1039/d1cp05055a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Perovskite oxyhydrides such as BaTiO2.5H0.5 have been found to be able to catalyze NH3 synthesis, but the mechanism and the role of the catalyst's lattice hydrides in the catalytic reaction remain unknown. Here we employ first principles density functional theory to investigate the mechanism of ammonia synthesis and the role of lattice hydrides on a prototypical perovskite oxyhydride, BaTiO2.5H0.5 (BTOH). Two mechanistic hypotheses, the distal and alternating pathways, have been tested on the Ti2O2 termination of the BTOH (210) surface, previously determined to be the most stable surface termination under the reaction conditions considered. In the distal pathway, H atoms hydrogenate N2 to form the *N-NHx key intermediates, followed by N-N bond breaking. In the alternating pathway, H atoms hydrogenate N2 in an alternating fashion to form the *NHx-NHy intermediates before N-N bond breaking and formation of co-adsorbed *NHx/*NHy on the surface. We find that the subsurface hydride vacancy formed after reaction of *N2 with the lattice hydride is key to the distal pathway, leading to surface nitride formation after breaking the *N-NH3 bond, while the neighboring surface Ti sites are key to bridging and stabilizing the *NNH intermediate in the alternating pathway. In both pathways, desorption of NH3 is the most uphill in energy. Our results provide important insights into the role of hydrides and surface vacancies in hydrogenation reactions over BTOH, which will be useful to guide future spectroscopic experiments such as operando IR and inelastic neutron scattering to verify the key intermediates.
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Affiliation(s)
- Kristen Wang
- Department of Chemistry, University of California, Riverside, CA 92521, USA.
| | - Zili Wu
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.,Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - De-En Jiang
- Department of Chemistry, University of California, Riverside, CA 92521, USA.
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6
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Schmidt J, Pettersson L, Verdozzi C, Botti S, Marques MAL. Crystal graph attention networks for the prediction of stable materials. SCIENCE ADVANCES 2021; 7:eabi7948. [PMID: 34860548 PMCID: PMC8641929 DOI: 10.1126/sciadv.abi7948] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 10/14/2021] [Indexed: 05/27/2023]
Abstract
Graph neural networks for crystal structures typically use the atomic positions and the atomic species as input. Unfortunately, this information is not available when predicting new materials, for which the precise geometrical information is unknown. We circumvent this problem by replacing the precise bond distances with embeddings of graph distances. This allows our networks to be applied directly in high-throughput studies based on both composition and crystal structure prototype without using relaxed structures as input. To train these networks, we curate a dataset of over 2 million density functional calculations of crystals with consistent calculation parameters. We apply the resulting model to the high-throughput search of 15 million tetragonal perovskites of composition ABCD2. As a result, we identify several thousand potentially stable compounds and demonstrate that transfer learning from the newly curated dataset reduces the required training data by 50%.
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Affiliation(s)
- Jonathan Schmidt
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Love Pettersson
- Department of Physics, Lund University Box 118, 221 00 Lund, Sweden
| | - Claudio Verdozzi
- Department of Physics, Lund University Box 118, 221 00 Lund, Sweden
| | - Silvana Botti
- Institut für Festkörpertheorie und Optik and European Theoretical Spectroscopy Facility, Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany
| | - Miguel A. L. Marques
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle (Saale), Germany
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7
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Strugovshchikov E, Pishtshev A, Karazhanov S. Orthogonal chemistry in the design of rare-earth metal oxyhydrides. PURE APPL CHEM 2021. [DOI: 10.1515/pac-2021-0207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Inorganic systems containing two or more kinds of anions, such as rare-earth metal oxyhydrides, have a number of interesting properties that can be used in the design and development of new functional materials with desired characteristics. Chemical synthesis of these materials can be accomplished by oxidation of metal hydrides. However, the oxidation process of a metal hydride is directly accompanied by the release of hydrogen; both processes are a combination of two sequential reactions. This is usually not favorable for the formation and crystallization of the ternary oxyhydride composition. One possible way to overcome this problem is to introduce an appropriate amount of oxygen atoms into certain interstitial positions adjacent to the metal sites of the hydride lattice. Guided by the ideas of orthogonality, we have proposed a theoretical model capable of providing a thorough understanding of the chemical processes occurring in a multicomponent system at the molecular level. This model opens the way for predicting a wide range of new, stable multi-anion compounds of different compositions. It can also control functionality by adding noncovalent interactions between different kinds of anions, which can lead to the formation of chiral structures or a significant increase in ferro- and piezoelectric properties.
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Affiliation(s)
| | - Aleksandr Pishtshev
- Institute of Physics , University of Tartu , W. Ostwaldi 1 , 50411 Tartu , Estonia
| | - Smagul Karazhanov
- Department for Solar Energy , Institute for Energy Technology , Kjeller , Norway
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8
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Computational Chemistry-Guided Syntheses and Crystal Structures of the Heavier Lanthanide Hydride Oxides DyHO, ErHO, and LuHO. CRYSTALS 2021. [DOI: 10.3390/cryst11070750] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Heteroanionic hydrides offer great possibilities in the design of functional materials. For ternary rare earth hydride oxide REHO, several modifications were reported with indications for a significant phase width with respect to H and O of the cubic representatives. We obtained DyHO and ErHO as well as the thus far elusive LuHO from solid-state reactions of RE2O3 and REH3 or LuH3 with CaO and investigated their crystal structures by neutron and X-ray powder diffraction. While DyHO, ErHO, and LuHO adopted the cubic anion-ordered half-Heusler LiAlSi structure type (F4¯3m, a(DyHO) = 5.30945(10) Å, a(ErHO) = 5.24615(7) Å, a(LuHO) = 5.171591(13) Å), LuHO additionally formed the orthorhombic anti-LiMgN structure type (Pnma; LuHO: a = 7.3493(7) Å, b = 3.6747(4) Å, c = 5.1985(3) Å; LuDO: a = 7.3116(16) Å, b = 3.6492(8) Å, c = 5.2021(7) Å). A comparison of the cubic compounds’ lattice parameters enabled a significant distinction between REHO and REH1+2xO1−x (x < 0 or x > 0). Furthermore, a computational chemistry study revealed the formation of REHO compounds of the smallest rare earth elements to be disfavored in comparison to the sesquioxides, which is why they may only be obtained by mild synthesis conditions.
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9
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Lavén R, Häussermann U, Perrichon A, Andersson MS, Targama MS, Demmel F, Karlsson M. Diffusional Dynamics of Hydride Ions in the Layered Oxyhydride SrVO 2H. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2021; 33:2967-2975. [PMID: 34054217 PMCID: PMC8154327 DOI: 10.1021/acs.chemmater.1c00505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/23/2021] [Indexed: 06/12/2023]
Abstract
Perovskite-type oxyhydrides are hydride-ion-conducting materials of promise for several types of technological applications; however, the conductivity is often too low for practical use and, on a fundamental level, the mechanism of hydride-ion diffusion remains unclear. Here, we, with the use of neutron scattering techniques, investigate the diffusional dynamics of hydride ions in the layered perovskite-type oxyhydride SrVO2H. By monitoring the intensity of the elastically scattered neutrons upon heating the sample from 100 to 430 K, we establish an onset temperature for diffusional hydride-ion dynamics at about 250 K. Above this temperature, the hydride ions are shown to exhibit two-dimensional diffusion restricted to the hydride-ion sublattice of SrVO2H and that occurs as a series of jumps of a hydride ion to a neighboring hydride-ion vacancy, with an enhanced rate for backward jumps due to correlation effects. Analysis of the temperature dependence of the neutron scattering data shows that the localized jumps of hydride ions are featured by a mean residence time of the order of 10 ps with an activation energy of 0.1 eV. The long-range diffusion of hydride ions occurs on the timescale of 1 ns and with an activation energy of 0.2 eV. The hydride-ion diffusion coefficient is found to be of the order of 1 × 10-6 cm2 s-1 in the temperature range of 300-430 K, which is similar to other oxyhydrides but higher than for proton-conducting perovskite analogues. Tuning of the hydride-ion vacancy concentration in SrVO2H thus represents a promising gateway to improve the ionic conductivity of this already highly hydride-ion-conducting material.
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Affiliation(s)
- Rasmus Lavén
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Göteborg SE-412 96, Sweden
| | - Ulrich Häussermann
- Department
of Materials and Environmental Chemistry, Stockholm University, Stockholm SE-10691, Sweden
| | - Adrien Perrichon
- ISIS
Facility, Rutherford Appleton Laboratory, Harwell Oxford,
Didcot, Oxfordshire OX11 0QX, U.K.
| | - Mikael S. Andersson
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Göteborg SE-412 96, Sweden
| | - Michael Sannemo Targama
- Department
of Materials and Environmental Chemistry, Stockholm University, Stockholm SE-10691, Sweden
| | - Franz Demmel
- ISIS
Facility, Rutherford Appleton Laboratory, Harwell Oxford,
Didcot, Oxfordshire OX11 0QX, U.K.
| | - Maths Karlsson
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Göteborg SE-412 96, Sweden
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10
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Colombi G, De Krom T, Chaykina D, Cornelius S, Eijt SWH, Dam B. Influence of Cation (RE = Sc, Y, Gd) and O/H Anion Ratio on the Photochromic Properties of REO x H 3-2x Thin Films. ACS PHOTONICS 2021; 8:709-715. [PMID: 33842670 PMCID: PMC8025701 DOI: 10.1021/acsphotonics.0c01877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Indexed: 06/12/2023]
Abstract
Rare-earth oxyhydride REO x H3-2x thin films prepared by air-oxidation of reactively sputtered REH2 dihydrides show a color-neutral, reversible photochromic effect at ambient conditions. The present work shows that the O/H anion ratio, as well as the choice of the cation, allow to largely tune the extent of the optical change and its speed. The bleaching time, in particular, can be reduced by an order of magnitude by increasing the O/H ratio, indirectly defined by the deposition pressure of the parent REH2. The influence of the cation (RE = Sc, Y, Gd) under comparable deposition conditions is discussed. Our data suggest that REs of a larger ionic radius form oxyhydrides with a larger optical contrast and faster bleaching speed, hinting to a dependency of the photochromic mechanism on the anion site-hopping.
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Affiliation(s)
- Giorgio Colombi
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
| | - Tom De Krom
- Fundamental
Aspects of Materials and Energy, Department of Radiation Science and
Technology, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, NL-2629
JB Delft, The Netherlands
| | - Diana Chaykina
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
- Fundamental
Aspects of Materials and Energy, Department of Radiation Science and
Technology, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, NL-2629
JB Delft, The Netherlands
| | - Steffen Cornelius
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
- Fraunhofer
Institute for Organic Electronics, Electron
Beam and Plasma Technology (FEP), Winterbergstrasse 28, 01277 Dresden, Germany
| | - Stephan W. H. Eijt
- Fundamental
Aspects of Materials and Energy, Department of Radiation Science and
Technology, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, NL-2629
JB Delft, The Netherlands
| | - Bernard Dam
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
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11
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Strugovshchikov E, Pishtshev A. Exploring the anion chemical space of Ln 2OF 2-xCl xH 2 (Ln = Y, La, Gd): a model of electroelastic material with high mechanical sensitivity and energy harvesting. MATERIALS HORIZONS 2021; 8:577-588. [PMID: 34821274 DOI: 10.1039/d0mh01524e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The main result of our investigation is the prediction of a new family of multianion compounds - Ln2OF2-xClxH2 (Ln = Y, La, Gd) which due to anomalous elastic behaviour could present interest for the design and development of electromechanical devices. The composition Ln2OF2-xClxH2 utilizes a complex heteroatomic anion [OF2-xClxH2]6-; in a solid state, as it follows from the DFT calculations, the system crystallizes into a columnar-type layered structure of P3m1 or R3m trigonal symmetries in which the LnO(F,Cl)H and Ln(F,Cl)FH layers are uniformly stacked in an alternating order along the high-symmetry c axis. In the trigonal lattice without an inversion center, the resulting two-layer geometry puts groups of the anionic species together in a way that gives rise to a strong localization of valence charge density. We showed that being globally stable, such specific crystal architecture may lead to a high asymmetry of mechanical and electrical responses with respect to imposed loads. Moreover, small dynamic changes of the equilibrium charge and bonding configurations may cause rather enhanced structural sensitivity of the elastic responses at low pressures. Comparison of electromechanical characteristics showed that the predicted materials can serve as direct successors of the line of polyvinylidene fluoride (PVDF) piezopolymers.
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12
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Mariño C, Basbus J, Larralde AL, Alonso JA, Fernández-Díaz MT, Troncoso L. Structural, electrical characterization and oxygen-diffusion paths in LaSrGa 1−xMg xO 4−δ ( x = 0.0–0.2) layered perovskites: an impedance spectroscopy and neutron diffraction study. NEW J CHEM 2021. [DOI: 10.1039/d1nj01662h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the diffusion pathways in perovskite-like structures. The modules of Gfourir and BondStr of Fullprof are feasible to obtain different paths in first approximation.
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Affiliation(s)
- C. Mariño
- Departamento de Metalurgia
- Universidad de Santiago de Chile
- Avenida Libertador Bernardo O’Higgins
- Estación central
- Santiago
| | - J. Basbus
- Centro Atómico Bariloche (CAB)
- INN-CNEA-CONICET
- S. C. de Bariloche
- Rio Negro
- Argentina
| | - A. L. Larralde
- Laboratorio de Cristalografía Aplicada
- Escuela de Ciencia y Tecnología
- Universidad Nacional de San Marín
- Campus Miguelete
- Martín de Irigoyen
| | - J. A. Alonso
- Instituto de Ciencia de Materiales de Madrid (ICMM)
- CSIC
- Cantoblanco
- Madrid
- Spain
| | | | - L. Troncoso
- Instituto de Materiales y Procesos Termomecánicos
- Universidad Austral de Chile
- General Lagos
- 2086
- Valdivia
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13
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Pishtshev A, Strugovshchikov E, Karazhanov S. On Prediction of a Novel Chiral Material Y 2H 3O(OH): A Hydroxyhydride Holding Hydridic and Protonic Hydrogens. MATERIALS (BASEL, SWITZERLAND) 2020; 13:ma13040994. [PMID: 32098454 PMCID: PMC7078701 DOI: 10.3390/ma13040994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/06/2020] [Accepted: 02/11/2020] [Indexed: 06/10/2023]
Abstract
Examination of possible pathways of how oxygen atoms can be added to a yttrium oxyhydride system allowed us to predict new derivatives such as hydroxyhydrides possessing the composition M2H3O(OH) (M = Y, Sc, La, and Gd) in which three different anions (H-, O2-, and OH-) share the common chemical space. The crystal data of the solid hydroxyhydrides obtained on the base of DFT modeling correspond to the tetragonal structure that is characterized by the chiral space group P 4 1 . The analysis of bonding situation in M2H3O(OH) showed that the microscopic mechanism governing chemical transformations is caused by the displacements of protons which are induced by interaction with oxygen atoms incorporated into the crystal lattice of the bulk oxyhydride. The oxygen-mediated transformation causes a change in the charge state of some adjacent hydridic sites, thus forming protonic sites associated with hydroxyl groups. The predicted materials demonstrate a specific charge ordering that is associated with the chiral structural organization of the metal cations and the anions because their lattice positions form helical curves spreading along the tetragonal axis. Moreover, the effect of spatial twisting of the H- and H+ sites provides additional linking via strong dihydrogen bonds. The structure-property relationships have been investigated in terms of structural, mechanical, electron, and optical features. It was shown that good polar properties of the materials make them possible prototypes for the design of nonlinear optical systems.
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Affiliation(s)
- Aleksandr Pishtshev
- Institute of Physics, University of Tartu, W.Ostwaldi 1, 50411 Tartu, Estonia;
| | | | - Smagul Karazhanov
- Department for Solar Energy, Institute for Energy Technology, 2007 Kjeller, Norway;
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14
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Zhou L, Han Y, Yin C, Wang Y, Yang X, Allix M, Huang Q, Xiong J, Wang B, Li G, Kuang X, Xing X. Trigonal-Planar Low-Spin Co 2+ in a Layered Mixed-Polyhedral Network from Topotactic Reduction. Inorg Chem 2019; 58:14193-14203. [PMID: 31584269 DOI: 10.1021/acs.inorgchem.9b02244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Topotactic reduction of the perovskite oxide TbBaCo2O5.5 with CaH2 leads to a new crystalline phase TbBaCo2O4.5, adopting a 2 × 2 × 1 superstructure compared to TbBaCo2O5.5. The structure consists of a corner-shared network of square pyramidal CoO5 and trigonal planar CoO3 units. Magnetic susceptibility and variable temperature neutron diffraction data reveal that TbBaCo2O4.5 adopts a G-type antiferromagnetically ordered structure (TN ∼ 322 K). The ordered moments are consistent with the presence of low-spin Co2+ (S = 1/2) in trigonal-planar coordination and high-spin Co2+ centers in square pyramidal coordination. TbBaCo2O4.5 shows lower conductivity than TbBaCo2O5.5, which is consistent with the p-type conduction behavior. The unique anion vacancy arrangements in TbBaCo2O4.5 further complement the role of A-cations in controlling the oxygen vacancy distribution in LnBaCo2O5+δ series and demonstrate more opportunity to tune the structural and physical properties based on cationic and anionic lattice coupling.
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Affiliation(s)
- Lijia Zhou
- MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, 'College of Materials Science and Engineering , Guilin University of Technology , Guilin 541004 , P. R. China
| | - YiFeng Han
- MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, 'College of Materials Science and Engineering , Guilin University of Technology , Guilin 541004 , P. R. China
| | - Congling Yin
- MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, 'College of Materials Science and Engineering , Guilin University of Technology , Guilin 541004 , P. R. China
| | - Yanhui Wang
- MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, 'College of Materials Science and Engineering , Guilin University of Technology , Guilin 541004 , P. R. China
| | - Xiaoyan Yang
- MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, 'College of Materials Science and Engineering , Guilin University of Technology , Guilin 541004 , P. R. China
| | - Mathieu Allix
- UPR3079 CEMHTI , 1D Avenue de la Recherche Scientifique , Orléans CEDEX 2 45071 , France.,Faculté des Sciences , Université d'Orléans , Avenue du Parc Floral , Orléans CEDEX 2 45067 , France
| | - Qingzhen Huang
- NIST Center for Neutron Research , National Institute of Standards and Technology , Gaithersburg , Maryland 20899 , United States
| | - Jin Xiong
- Beijing National Laboratory for Molecular Sciences, The State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China
| | - Bingwu Wang
- Beijing National Laboratory for Molecular Sciences, The State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China
| | - Guobao Li
- Beijing National Laboratory for Molecular Sciences, The State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China
| | - Xiaojun Kuang
- MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, 'College of Materials Science and Engineering , Guilin University of Technology , Guilin 541004 , P. R. China
| | - Xianran Xing
- Beijing Advanced Innovation Center for Materials Genome Engineering and Institute of Solid-State Chemistry , University of Science and Technology Beijing , Beijing 100083 , P. R. China
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15
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Pishtshev A, Strugovshchikov E. Computational Prediction of Ferro‐ and Piezoelectricity in Lead‐Free Oxyhydrides Ln
2
H
4
O (Ln = Y, La). ADVANCED THEORY AND SIMULATIONS 2019. [DOI: 10.1002/adts.201900144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Kageyama H, Yajima T, Tsujimoto Y, Yamamoto T, Tassel C, Kobayashi Y. Exploring Structures and Properties through Anion Chemistry. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190095] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hiroshi Kageyama
- Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8581, Japan
| | - Takeshi Yajima
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Yoshihiro Tsujimoto
- Research Centre for Functional Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takafumi Yamamoto
- Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8581, Japan
| | - Cedric Tassel
- Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8581, Japan
| | - Yoji Kobayashi
- Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8581, Japan
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17
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Cornelius S, Colombi G, Nafezarefi F, Schreuders H, Heller R, Munnik F, Dam B. Oxyhydride Nature of Rare-Earth-Based Photochromic Thin Films. J Phys Chem Lett 2019; 10:1342-1348. [PMID: 30844288 PMCID: PMC6434503 DOI: 10.1021/acs.jpclett.9b00088] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 02/20/2019] [Indexed: 06/09/2023]
Abstract
Thin films of rare-earth (RE)-oxygen-hydrogen compounds prepared by reactive magnetron sputtering show a unique color-neutral photochromic effect at ambient conditions. While their optical properties have been studied extensively, the understanding of the relationship between photochromism, chemical composition, and structure is limited. Here we establish a ternary RE-O-H composition-phase diagram based on chemical composition analysis by a combination of Rutherford backscattering and elastic recoil detection. The photochromic films are identified as oxyhydrides with a wide composition range described by the formula REO xH3-2 x where 0.5 ≤ x ≤ 1.5. We propose an anion-disordered structure model based on the face-centered cubic unit cell where the O2- and H- anions occupy tetrahedral and octahedral interstices. The optical band gap varies continuously with the anion ratio, demonstrating the potential of band gap tuning for reversible optical switching applications.
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Affiliation(s)
- Steffen Cornelius
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
| | - Giorgio Colombi
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
| | - Fahimeh Nafezarefi
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
| | - Herman Schreuders
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
| | - René Heller
- Helmholtz-Zentrum
Dresden-Rossendorf, Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, D-01328 Dresden, Germany
| | - Frans Munnik
- Helmholtz-Zentrum
Dresden-Rossendorf, Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, D-01328 Dresden, Germany
| | - Bernard Dam
- Materials
for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, NL-2629HZ Delft, The Netherlands
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18
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Jin L, Hayward MA. Rhodium-containing oxide-hydrides: covalently stabilized mixed-anion solids. Chem Commun (Camb) 2019; 55:4861-4864. [PMID: 30951055 DOI: 10.1039/c9cc01768b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The first rhodium-containing oxide-hydride phases, LaSrCo0.5Rh0.5O3H and La0.5Sr1.5Mn0.5Rh0.5O3H, have been prepared via topochemical anion exchange. This clearly demonstrates the ability of rhodium, a late 4d transition metal, to kinetically stabilize oxide-hydride lattices, reinforcing the paradigm of covalent stabilization of transition-metal oxide-hydride phases.
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Affiliation(s)
- Lun Jin
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, OX1 3QR, UK. .,ac.uk
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19
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Yamashita H, Broux T, Kobayashi Y, Takeiri F, Ubukata H, Zhu T, Hayward MA, Fujii K, Yashima M, Shitara K, Kuwabara A, Murakami T, Kageyama H. Chemical Pressure-Induced Anion Order–Disorder Transition in LnHO Enabled by Hydride Size Flexibility. J Am Chem Soc 2018; 140:11170-11173. [DOI: 10.1021/jacs.8b06187] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hiroki Yamashita
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Thibault Broux
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Yoji Kobayashi
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Fumitaka Takeiri
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Hiroki Ubukata
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Tong Zhu
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Michael A. Hayward
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Kotaro Fujii
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Masatomo Yashima
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Kazuki Shitara
- Joining and Welding Research Institute, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Akihide Kuwabara
- Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya 456-8587, Japan
| | - Taito Murakami
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Hiroshi Kageyama
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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20
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Hernandez OJ, Geneste G, Yajima T, Kobayashi Y, Okura M, Aidzu K, Tassel C, Paofai S, Swain D, Ritter C, Kageyama H. Site Selectivity of Hydride in Early-Transition-Metal Ruddlesden–Popper Oxyhydrides. Inorg Chem 2018; 57:11058-11067. [DOI: 10.1021/acs.inorgchem.8b01645] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Olivier J. Hernandez
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | | | - Takeshi Yajima
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Yoji Kobayashi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masatoshi Okura
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kouhei Aidzu
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Cédric Tassel
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Serge Paofai
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Diptikanta Swain
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | - Clemens Ritter
- Institut Laue-Langevin, 71 avenue des Martyrs CS 20156, 38042 Grenoble Cedex 9, France
| | - Hiroshi Kageyama
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
- CREST, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
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