Download file (734 KB)
Download as zip (475 KB)

Collection

Citation

Description:

BaZrO3 and KTaO3 are two rare examples of perovskite oxides that retain the ideal cubic structure down to the lowest temperature. In this paper, we report thermal conductivity (κ) between 300 and 773 K on single crystals of these compounds. For BaZrO3, the κ of 7.5 Wm−1K−1 at 300 K is ∼40% larger than the previously reported polycrystalline values. For KTaO3, our value of 13.1 Wm−1K−1 at 300 K clarifies the sources of error in some of the previously reported data. These results underscore the importance of high-quality experimental data in benchmarking the accuracy of advanced first-principles κ calculations.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: thermal conductivity, single crystals, oxides

Date published: 2024-07-01

Publisher: IOP Publishing

Journal:

• Applied Physics Express (ISSN: 18820786) vol. 17 issue. 7 071003

Funding:

• JST-Mirai Program JPMJMI19A1

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.35848/1882-0786/ad5c26

Related item:

Other identifier(s):

Contact agent:

Updated at: 2024-08-02 08:30:09 +0900

Published on MDR: 2024-08-02 08:30:09 +0900