Role of temperature and oxygen content on structural and electrical properties of LaBaCo2O5+δ thin films
The role of temperature and the oxygen content in the structural transformation and electrical conductivity of epitaxial double perovskite LaBaCo2O5+δ (0≤ δ ≤ 1) thin films was systematically investigated. Reciprocal space mapping and ω-2θ x-ray diffraction performed at different temperatures in vac...
| Veröffentlicht in: | Applied physics letters. - 1998. - 112(2018), 7 vom: 12. Feb., Seite 073905 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2018
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| Zugriff auf das übergeordnete Werk: | Applied physics letters |
| Schlagworte: | Journal Article |
| Zusammenfassung: | The role of temperature and the oxygen content in the structural transformation and electrical conductivity of epitaxial double perovskite LaBaCo2O5+δ (0≤ δ ≤ 1) thin films was systematically investigated. Reciprocal space mapping and ω-2θ x-ray diffraction performed at different temperatures in vacuum indicate that oxygen vacancies in the films become ordered at high temperature in a reducing environment. The changes of the oxygen content and the degree of oxygen vacancy ordering in the films result in a strong in-plane anisotropic lattice deformation and a large thermal expansion coefficient along the c-axis direction. The electrical conductivity measurements reveal that these behaviors are related to the degree of oxygen vacancy formation and lattice deformation in the films |
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| Beschreibung: | Date Revised 22.09.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 0003-6951 |
| DOI: | 10.1063/1.5009245 |