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Title: Correlation of structural and electrical properties of PrBaCo 2O 5+δ thin films at high temperature

Epitaxial PrBaCo 2O 5+δ (PBCO, 0 ≤ δ ≤ 1) thin films were deposited by pulsed laser deposition. The structural and electrical properties of the films were characterized at high temperatures in reduced environments. X-ray diffraction scans at high temperature in reduced environment show potential structural transitions of PBCO as evidenced by both a large (Δ l = 0.335 nm) expansion of the out-plane (c-axis) lattice, due to thermal and chemical expansion, and a step in the expansion of the c-axis lattice parameter. These transitions indicate the presence of oxygen vacancy ordering as the oxygen content in the films is reduced. Resistivity measurements under the same environments also show evidence of sharp transitions related with the structural transformations. In conclusion, this study helps the understanding of the structure-property relationship of PBCO at high temperature and provides important technological information to utilize these materials for solid oxide fuel cell at intermediate temperatures.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ; ORCiD logo [2] ;  [3]
  1. Univ. of Texas at San Antonio, San Antonio, TX (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. at Buffalo, State Univ. of New York, Buffalo, NY (United States)
Publication Date:
Report Number(s):
LA-UR-18-28581
Journal ID: ISSN 2352-8478
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Materiomics
Additional Journal Information:
Journal Volume: 4; Journal Issue: 1; Journal ID: ISSN 2352-8478
Publisher:
Chinese Ceramic Society
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; High temperature; Physical properties; Complex oxide; Oxygen vacancy; Lattice structures
OSTI Identifier:
1471369

Mace, Brennan, Harrell, Zach, Xu, Xing, Chen, Chonglin, Enriquez, Erik, Chen, Aiping, and Jia, Quanxi. Correlation of structural and electrical properties of PrBaCo2O5+δ thin films at high temperature. United States: N. p., Web. doi:10.1016/j.jmat.2017.12.003.
Mace, Brennan, Harrell, Zach, Xu, Xing, Chen, Chonglin, Enriquez, Erik, Chen, Aiping, & Jia, Quanxi. Correlation of structural and electrical properties of PrBaCo2O5+δ thin films at high temperature. United States. doi:10.1016/j.jmat.2017.12.003.
Mace, Brennan, Harrell, Zach, Xu, Xing, Chen, Chonglin, Enriquez, Erik, Chen, Aiping, and Jia, Quanxi. 2017. "Correlation of structural and electrical properties of PrBaCo2O5+δ thin films at high temperature". United States. doi:10.1016/j.jmat.2017.12.003. https://www.osti.gov/servlets/purl/1471369.
@article{osti_1471369,
title = {Correlation of structural and electrical properties of PrBaCo2O5+δ thin films at high temperature},
author = {Mace, Brennan and Harrell, Zach and Xu, Xing and Chen, Chonglin and Enriquez, Erik and Chen, Aiping and Jia, Quanxi},
abstractNote = {Epitaxial PrBaCo2O5+δ (PBCO, 0 ≤ δ ≤ 1) thin films were deposited by pulsed laser deposition. The structural and electrical properties of the films were characterized at high temperatures in reduced environments. X-ray diffraction scans at high temperature in reduced environment show potential structural transitions of PBCO as evidenced by both a large (Δl = 0.335 nm) expansion of the out-plane (c-axis) lattice, due to thermal and chemical expansion, and a step in the expansion of the c-axis lattice parameter. These transitions indicate the presence of oxygen vacancy ordering as the oxygen content in the films is reduced. Resistivity measurements under the same environments also show evidence of sharp transitions related with the structural transformations. In conclusion, this study helps the understanding of the structure-property relationship of PBCO at high temperature and provides important technological information to utilize these materials for solid oxide fuel cell at intermediate temperatures.},
doi = {10.1016/j.jmat.2017.12.003},
journal = {Journal of Materiomics},
number = 1,
volume = 4,
place = {United States},
year = {2017},
month = {12}
}