1
|
Hoang VH, Lee NS, Kim HJ. Strain-induced Mn valence state variation in CaMnO 3-δ/substrate interfaces: electronic reconstruction versus oxygen vacancies. NANOSCALE ADVANCES 2023; 5:3887-3895. [PMID: 37496622 PMCID: PMC10368000 DOI: 10.1039/d3na00206c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/26/2023] [Indexed: 07/28/2023]
Abstract
This study investigates the nanoscale crystalline and electronic structures of the interfaces between CaMnO3-δ and substrates such as SrTiO3 (001) and LaAlO3 (001) by employing advanced transmission electron microscopy and electron energy loss spectroscopy techniques. The objective is to comprehend the influence of different strains on the Mn valence state. Our findings reveal that the Mn valence state remains relatively stable in the region of a weakly tensile-strained interface, whereas it experiences a significant decrease from Mn4+ to Mn2.3+ in the region of a strongly tensile-strained interface. Although this reduction in valence appears to be consistent with the electron reconstruction scenario, the observed increase in the out-of-plane lattice constant at the interface implies the accumulation of oxygen vacancies at the interface. Consequently, the present study offers a comprehensive understanding of the intricate relationships among the Mn valence state, local structure, and formation of oxygen vacancies in the context of two distinct strain cases. This knowledge is essential for tailoring the interface properties and guiding future developments in the field of oxide heterostructures.
Collapse
Affiliation(s)
- Van-Hien Hoang
- Department of Physics, Graduate School, Daegu University Gyeongbuk 38453 Republic of Korea
| | - Nam-Suk Lee
- National Institute for Nanomaterials Technology (NINT), Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Heon-Jung Kim
- Department of Physics, Graduate School, Daegu University Gyeongbuk 38453 Republic of Korea
- Department of Materials-Energy Science and Engineering, College of Engineering, Daegu University Gyeongbuk 38453 Republic of Korea
| |
Collapse
|
2
|
Chaluvadi SK, Punathum Chalil S, Mazzola F, Dolabella S, Rajak P, Ferrara M, Ciancio R, Fujii J, Panaccione G, Rossi G, Orgiani P. Nd:YAG infrared laser as a viable alternative to excimer laser: YBCO case study. Sci Rep 2023; 13:3882. [PMID: 36890286 PMCID: PMC9995509 DOI: 10.1038/s41598-023-30887-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/02/2023] [Indexed: 03/10/2023] Open
Abstract
We report on the growth and characterization of epitaxial YBa[Formula: see text]Cu[Formula: see text]O[Formula: see text] (YBCO) complex oxide thin films and related heterostructures exclusively by Pulsed Laser Deposition (PLD) and using first harmonic Nd:Y[Formula: see text]Al[Formula: see text]O[Formula: see text] (Nd:YAG) pulsed laser source ([Formula: see text] = 1064 nm). High-quality epitaxial YBCO thin film heterostructures display superconducting properties with transition temperature [Formula: see text] 80 K. Compared with the excimer lasers, when using Nd:YAG lasers, the optimal growth conditions are achieved at a large target-to-substrate distance d. These results clearly demonstrate the potential use of the first harmonic Nd:YAG laser source as an alternative to the excimer lasers for the PLD thin film community. Its compactness as well as the absence of any safety issues related to poisonous gas represent a major breakthrough in the deposition of complex multi-element compounds in form of thin films.
Collapse
Affiliation(s)
- Sandeep Kumar Chaluvadi
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy.
| | - Shyni Punathum Chalil
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy.,International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151, Trieste, Italy
| | - Federico Mazzola
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy.,Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, 30172, Venice, Italy
| | - Simone Dolabella
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy
| | - Piu Rajak
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy.,International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151, Trieste, Italy
| | - Marcello Ferrara
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy
| | - Regina Ciancio
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy.,AREA Science Park, Padriciano 99, 34139, Trieste, Italy
| | - Jun Fujii
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy
| | - Giancarlo Panaccione
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy
| | - Giorgio Rossi
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy.,Department of Physics, University of Milano, Via Celoria 16, 20133, Milan, Italy
| | - Pasquale Orgiani
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, s.s.14 km 163.5, 34149, Trieste, Italy.
| |
Collapse
|
3
|
Orgiani P, Chaluvadi SK, Chalil SP, Mazzola F, Jana A, Dolabella S, Rajak P, Ferrara M, Benedetti D, Fondacaro A, Salvador F, Ciancio R, Fujii J, Panaccione G, Vobornik I, Rossi G. Dual pulsed laser deposition system for the growth of complex materials and heterostructures. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2023; 94:033903. [PMID: 37012774 DOI: 10.1063/5.0138889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/12/2023] [Indexed: 06/19/2023]
Abstract
Here, we present an integrated ultra-high-vacuum (UHV) apparatus for the growth of complex materials and heterostructures. The specific growth technique is the Pulsed Laser Deposition (PLD) by means of a dual-laser source based on an excimer KrF ultraviolet and solid-state Nd:YAG infra-red lasers. By taking advantage of the two laser sources-both lasers can be independently used within the deposition chambers-a large number of different materials-ranging from oxides to metals, to selenides, and others-can be successfully grown in the form of thin films and heterostructures. All of the samples can be in situ transferred between the deposition chambers and the analysis chambers by using vessels and holders' manipulators. The apparatus also offers the possibility to transfer samples to remote instrumentation under UHV conditions by means of commercially available UHV-suitcases. The dual-PLD operates for in-house research as well as user facility in combination with the Advanced Photo-electric Effect beamline at the Elettra synchrotron radiation facility in Trieste and allows synchrotron-based photo-emission as well as x-ray absorption experiments on pristine films and heterostructures.
Collapse
Affiliation(s)
- P Orgiani
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - S K Chaluvadi
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - S Punathum Chalil
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - F Mazzola
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, 30172 Venice, Italy
| | - A Jana
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - S Dolabella
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - P Rajak
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - M Ferrara
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - D Benedetti
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - A Fondacaro
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - F Salvador
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - R Ciancio
- AREA Science Park, Padriciano 99, I-34149 Trieste, Italy
| | - J Fujii
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - G Panaccione
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - I Vobornik
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| | - G Rossi
- CNR-IOM Istituto Officina dei Materiali, TASC Laboratory, Area Science Park, S.S. 14, km 163.5, I-34149 Trieste, Italy
| |
Collapse
|
4
|
Sarkar A, Wang D, Kante MV, Eiselt L, Trouillet V, Iankevich G, Zhao Z, Bhattacharya SS, Hahn H, Kruk R. High Entropy Approach to Engineer Strongly Correlated Functionalities in Manganites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207436. [PMID: 36383029 DOI: 10.1002/adma.202207436] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 11/04/2022] [Indexed: 06/16/2023]
Abstract
Technologically relevant strongly correlated phenomena such as colossal magnetoresistance (CMR) and metal-insulator transitions (MIT) exhibited by perovskite manganites are driven and enhanced by the coexistence of multiple competing magneto-electronic phases. Such magneto-electronic inhomogeneity is governed by the intrinsic lattice-charge-spin-orbital correlations, which, in turn, are conventionally tailored in manganites via chemical substitution, charge doping, or strain engineering. Alternately, the recently discovered high entropy oxides (HEOs), owing to the presence of multiple-principal cations on a given sub-lattice, exhibit indications of an inherent magneto-electronic phase separation encapsulated in a single crystallographic phase. Here, the high entropy (HE) concept is combined with standard property control by hole doping in a series of single-phase orthorhombic HE-manganites (HE-Mn), (Gd0.25 La0.25 Nd0.25 Sm0.25 )1- x Srx MnO3 (x = 0-0.5). High-resolution transmission microscopy reveals hitherto-unknown lattice imperfections in HEOs: twins, stacking faults, and missing planes. Magnetometry and electrical measurements infer three distinct ground states-insulating antiferromagnetic, unpercolated metallic ferromagnetic, and long-range metallic ferromagnetic-coexisting or/and competing as a result of hole doping and multi-cation complexity. Consequently, CMR ≈1550% stemming from an MIT is observed in polycrystalline pellets, matching the best-known values for bulk conventional manganites. Hence, this initial case study highlights the potential for a synergetic development of strongly correlated oxides offered by the high entropy design approach.
Collapse
Affiliation(s)
- Abhishek Sarkar
- KIT-TUD Joint Research Laboratory Nanomaterials - Technische Universität Darmstadt, Otto-Berndt-Str. 3, 64287, Darmstadt, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Di Wang
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Mohana V Kante
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Luis Eiselt
- KIT-TUD Joint Research Laboratory Nanomaterials - Technische Universität Darmstadt, Otto-Berndt-Str. 3, 64287, Darmstadt, Germany
| | - Vanessa Trouillet
- Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Institute for Applied Materials (IAM-ESS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Gleb Iankevich
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Zhibo Zhao
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Subramshu S Bhattacharya
- Nanofunctional Materials Technology Centre (NFMTC), Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Horst Hahn
- KIT-TUD Joint Research Laboratory Nanomaterials - Technische Universität Darmstadt, Otto-Berndt-Str. 3, 64287, Darmstadt, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Robert Kruk
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| |
Collapse
|
5
|
Strain Engineering: A Pathway for Tunable Functionalities of Perovskite Metal Oxide Films. NANOMATERIALS 2022; 12:nano12050835. [PMID: 35269323 PMCID: PMC8912649 DOI: 10.3390/nano12050835] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/14/2022] [Accepted: 02/24/2022] [Indexed: 11/16/2022]
Abstract
Perovskite offers a framework that boasts various functionalities and physical properties of interest such as ferroelectricity, magnetic orderings, multiferroicity, superconductivity, semiconductor, and optoelectronic properties owing to their rich compositional diversity. These properties are also uniquely tied to their crystal distortion which is directly affected by lattice strain. Therefore, many important properties of perovskite can be further tuned through strain engineering which can be accomplished by chemical doping or simply element substitution, interface engineering in epitaxial thin films, and special architectures such as nanocomposites. In this review, we focus on and highlight the structure–property relationships of perovskite metal oxide films and elucidate the principles to manipulate the functionalities through different modalities of strain engineering approaches.
Collapse
|