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Title: Role of temperature and oxygen content on structural and electrical properties of LaBaCo2O5+δ thin films

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.5009245· OSTI ID:1471370

Here, 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.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396; AC04-94AL85000
OSTI ID:
1471370
Alternate ID(s):
OSTI ID: 1421308
Report Number(s):
LA-UR-18-28582
Journal Information:
Applied Physics Letters, Vol. 112, Issue 7; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Cited By (2)

Structure and magnetic properties of highly oriented LaBaCo 2 O 5+δ films deposited on Si wafers with Pt/Ti buffer layer journal January 2019
Investigation of a submerging redox behavior in Fe 2 O 3 solid electrolyte for resistive switching memory journal April 2019

Figures / Tables (4)