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Wang Y, Li X, Luo J, Woodfield BF, Wang X, Feng T, Yin N, Shi Q, Li G, Li L. An Unexpected Decrease in Vibrational Entropy of Multicomponent Rutile Oxides. J Am Chem Soc 2024; 146:14493-14504. [PMID: 38743872 DOI: 10.1021/jacs.3c14801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
High-entropy oxides (HEOs), featuring infinite chemical composition and exceptional physicochemical properties, are attracting much attention. The configurational entropy caused by a component disorder of HEOs is popularly believed to be the main driving force for thermal stability, while the role of vibrational entropy in the thermodynamic landscape has been neglected. In this study, we systematically investigated the vibrational entropy of multicomponent rutile oxides (including Fe0.5Ta0.5O2, Fe0.333Ti0.333Ta0.333O2, Fe0.25Ti0.25Ta0.25Sn0.25O2, and Fe0.21Ti0.21Ta0.21Sn0.21Ge0.16O2) by precise heat capacity measurements. It is found that vibrational entropy gradually decreases with increasing component disorder, beyond what one could expect from an equilibrium thermodynamics perspective. Moreover, all multicomponent rutile oxides exhibit a positive excess vibrational entropy at 298.15 K. Upon examinations of configuration disorder, size mismatch, phase transition, and polyhedral distortions, we demonstrate that the excess vibrational entropy plays a pivotal role in lowering the crystallization temperature of multicomponent rutile oxides. These findings represent the first experimental confirmation of the role of lattice vibrations in the thermodynamic landscape of rutile HEOs. In particular, vibrational entropy could serve as a novel descriptor to guide the predictive design of multicomponent oxide materials.
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Affiliation(s)
- Yaowen Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xinbo Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Jipeng Luo
- Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Brian F Woodfield
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Tao Feng
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Nan Yin
- Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Quan Shi
- Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Guangshe Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Liping Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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Zaraq A, Orayech B, Igartua JM, El Bouari A, Gregory DH, Gesing TM. Crystallography at non-ambient conditions and physical properties of the synthesized double perovskites, Sr 2(Co 1-xFe x)TeO 6. Dalton Trans 2023; 52:4086-4102. [PMID: 36880967 DOI: 10.1039/d2dt03543j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Polycrystalline double perovskite-type Sr2(Co1-xFex)TeO6 with various stoichiometric compositions (x = 0, 0.25, 0.5, 0.75, and 1) were synthesized by solid-state reactions in air. The crystal structures and phase transitions of this series at different temperature intervals were determined by X-ray powder diffraction, and from the obtained data the crystal structures were refined. It has been proven that for the compositions x = 0.25, 0.50, and 0.75, the phases crystallize at room temperature in the monoclinic space group I2/m. Down to 100 K, depending on the composition, these structures experience a phase transition from I2/m to P21/n. At high temperatures up to 1100 K their crystal structures show two further phase transitions. The first one is a first-order phase transition, from monoclinic I2/m to tetragonal I4/m, followed by a second-order phase transition to cubic Fm3̄m. Therefore, the phase transition sequence of this series detected at temperatures ranging from 100 K to 1100 K is P21/n → I2/m → I4/m → Fm3̄m. The temperature-dependent vibrational features of the octahedral sites were investigated by Raman spectroscopy, which furthermore complements the XRD results. A decrease in the phase-transition temperature with increasing iron content has been observed for these compounds. This fact is explained by the progressive diminishing of the distortion of the double-perovskite structure in this series. Using room-temperature Mössbauer spectroscopy, the presence of two iron sites is confirmed. The two different transition metal cations Co and Fe at the B sites allow exploring their effect on the optical band-gap.
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Affiliation(s)
- Asmaa Zaraq
- University of Bremen, Institute of Inorganic Chemistry and Crystallography, Bremen, Germany.
| | - Brahim Orayech
- Maxam, Technology Center Energetic Materials, Carretera N-623 km 28, 09141Quintanilla Sobresierra, Burgos, Spain
| | - Josu M Igartua
- Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU: Leioa, Bizkaia, España
| | - Abdeslam El Bouari
- Laboratory of Physical-Chemistry, Materials and Catalysis, Department of Chemistry, Faculty of Sciences Ben M'Sik, University Hassan II of Casablanca, Casablanca, Morocco
| | - Duncan H Gregory
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow G12 8QQ, UK
| | - Thorsten M Gesing
- University of Bremen, Institute of Inorganic Chemistry and Crystallography, Bremen, Germany. .,University of Bremen, MAPEX Center for Materials and Processes, Bremen, Germany
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Zaraq A, Gregory DH, Orayech B, Igartua JM, El Bouari A, Eales JD, Bingham PA, Gesing TM. Effects of iron substitution and anti-site disorder on crystal structures, vibrational, optical and magnetic properties of double perovskites Sr 2(Fe 1−xNi x)TeO 6. Dalton Trans 2022; 51:17368-17380. [DOI: 10.1039/d2dt02447k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We report a new series of DP Sr2(Fe1−xNix)TeO6, which have different transition metal Fe and Ni on B sites, providing an opportunity to investigate their effect on crystal structure, vibrational, optical and magnetic properties.
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Affiliation(s)
- Asmaa Zaraq
- University of Bremen, Institute of Inorganic Chemistry and Crystallography, Bremen, Germany
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow G12 8QQ, UK
| | - Duncan H. Gregory
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow G12 8QQ, UK
| | - Brahim Orayech
- Maxam, Technology Center Energetic Materials, Carretera N-623 km 28., 09141 Quintanilla Sobresierra. Burgos, Spain
| | - Josu M. Igartua
- Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU: Leioa, Bizkaia, España
| | - Abdeslam El Bouari
- Laboratory of Physical-Chemistry, Materials and Catalysis, Department of Chemistry, Faculty of Sciences Ben M'Sik, University Hassan II of Casablanca, Casablanca, Morocco
| | - James D. Eales
- Materials and Engineering Research Institute, Sheffield Hallam University, City Campus, Howard Street, Sheffield, S1 1WB, UK
| | - Paul A. Bingham
- Materials and Engineering Research Institute, Sheffield Hallam University, City Campus, Howard Street, Sheffield, S1 1WB, UK
| | - Thorsten M. Gesing
- University of Bremen, Institute of Inorganic Chemistry and Crystallography, Bremen, Germany
- University of Bremen, MAPEX Center for Materials and Processes, Bremen, Germany
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Affiliation(s)
- Gohil S. Thakur
- Max‐Planck Institut für Chemische Physik Fester Stoffe Nöthnitzerstraße 40 01187 Dresden Germany
| | - Claudia Felser
- Max‐Planck Institut für Chemische Physik Fester Stoffe Nöthnitzerstraße 40 01187 Dresden Germany
| | - Martin Jansen
- Max‐Planck Institut für Chemische Physik Fester Stoffe Nöthnitzerstraße 40 01187 Dresden Germany
- Max‐Planck Institut für Festkörperforschung Heisenbergstraße 1 70569 Stuttgart Germany
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Zhang W, He Z, Xie Y, Cui M, Zhang S, Chen S, Zhao Z, Zhang M, Huang X. Molybdate–Tellurite Compounds with Capped-Kagomé Spin–Lattices. Inorg Chem 2020; 59:2299-2307. [DOI: 10.1021/acs.inorgchem.9b03050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wanwan Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhangzhen He
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Yaxin Xie
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Meiyan Cui
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Suyun Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Sihuai Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Zhiying Zhao
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Mengsi Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoying Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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El Hachmi A, El Bachraoui F, Louihi S, Tamraoui Y, Benmokhtar S, Bih L, Sajieddine M, Lazor P, Manoun B. Structural, Magnetic and Optical Properties Study of Tellurium-Based Perovskites: Sr3−xPbxFe2TeO9 (0 ≤ x ≤ 2.25). J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01446-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Song G, Bovo L, Terry LR, Gómez Rojas O, Hall SR. Increase of Cr solubility in cubic Sr 2Fe xCr 2−xO 6−y unit cell using sol–gel assisted synthesis and characterizations of Sr 2FeCrO 6−y phase. CrystEngComm 2018. [DOI: 10.1039/c8ce00477c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A homogeneous, non-selective chelating system using EDTA–chitosan was created to produce a cubic phase perovskite material Sr2FeCrO6−y.
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Affiliation(s)
- G. Song
- School of Chemistry
- University of Bristol
- Bristol
- UK
| | - L. Bovo
- London Centre for Nanotechnology
- University College London
- London WC1H 0AH
- UK
- Department of Innovation and Enterprise
| | - L. R. Terry
- School of Chemistry
- University of Bristol
- Bristol
- UK
| | - O. Gómez Rojas
- School of Chemistry
- University of Bristol
- Bristol
- UK
- Bristol Centre for Functional Nanomaterials
| | - S. R. Hall
- School of Chemistry
- University of Bristol
- Bristol
- UK
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High temperature induced phase transitions in SrCaCoTeO6 and SrCaNiTeO6 ordered double perovskites. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.02.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kim MK, Moon JY, Choi HY, Oh SH, Lee N, Choi YJ. Investigation of the magnetic properties in double perovskite R2CoMnO6 single crystals (R = rare earth: La to Lu). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:426002. [PMID: 26442994 DOI: 10.1088/0953-8984/27/42/426002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have successfully synthesized the series of the double-perovskite R2CoMnO6 (R = rare earth: La to Lu) single crystals and have investigated their magnetic properties. The ferromagnetic order of Co(2+)/Mn(4+) spins emerges mainly along the c axis. Upon decreasing the size of rare earth ion, the magnetic transition temperature decreases linearly from 204 K for La2CoMnO6 to 48 K for Lu2CoMnO6, along with the enhancement of monoclinic distortion. The temperature and magnetic-field dependences of magnetization reveal the various magnetic characteristics such as the metamagnetic transition in R = Eu, the isotropic nature of rare earth moment in R = Gd, and the reversal of magnetic anisotropy in R = Tb and Dy. Our results offer comprehensive information for understanding the roles of mixed-valent magnetic ions and rare earth magnetic moments on the magnetic properties.
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Affiliation(s)
- M K Kim
- Department of Physics and IPAP, Yonsei University, Seoul 120-749, Korea
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Franco D, Carbonio R, Nieva G. Synthesis and structural and magnetic characterization of the frustrated magnetic system La2Ni4/3−Co Sb2/3O6. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2013.09.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Synthesis, structure and magnetic properties of La3Co2SbO9: A double perovskite with competing antiferromagnetic and ferromagnetic interactions. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.05.045] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Palomares V, Goñi A, Iturrondobeitia A, Lezama L, de Meatza I, Bengoechea M, Rojo T. Structural, magnetic and electrochemical study of a new active phase obtained by oxidation of a LiFePO4/C composite. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm14462j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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