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Thermal Conductivity of Barium Bismuthate at Low Temperatures

Publication ,  Journal Article
Henriques, A; Oliveira, DMN; Baksi, M; Naveed, M; Brito, WH; Larrea-Jimenez, J; Kumah, D; Wirth, S; Martelli, V
Published in: New Physics: Sae Mulli
December 1, 2023

The perovskite BaBiO3 crystallizes in a cubic structure and undergoes structural transitions toward lower symmetry phases upon cooling. The two low-temperature monoclinic phases are insulating, and the origin of this unexpected non-metallic character has been under debate. Both monoclinic phases exhibit tilting and breathing distortions, which are connected with their insulating nature and may have important effects on phononic heat conductivity. Here, we report the first thermal conductivity measurement, κ(T), in pristine polycrystalline BaBiO3 from 1.5 K to 310 K. At low and intermediate temperatures, we observe features reminiscent of a glass-like behavior, whereas at high-temperatures we find a downturn - typical of a crystalline solid. We compare our findings with available data of other recently investigated perovskite oxides displaying similar temperature dependence.

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Published In

New Physics: Sae Mulli

DOI

EISSN

2289-0041

ISSN

0374-4914

Publication Date

December 1, 2023

Volume

73

Issue

12

Start / End Page

1183 / 1188
 

Citation

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Chicago
ICMJE
MLA
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Henriques, A., Oliveira, D. M. N., Baksi, M., Naveed, M., Brito, W. H., Larrea-Jimenez, J., … Martelli, V. (2023). Thermal Conductivity of Barium Bismuthate at Low Temperatures. New Physics: Sae Mulli, 73(12), 1183–1188. https://doi.org/10.3938/NPSM.73.1183
Henriques, A., D. M. N. Oliveira, M. Baksi, M. Naveed, W. H. Brito, J. Larrea-Jimenez, D. Kumah, S. Wirth, and V. Martelli. “Thermal Conductivity of Barium Bismuthate at Low Temperatures.” New Physics: Sae Mulli 73, no. 12 (December 1, 2023): 1183–88. https://doi.org/10.3938/NPSM.73.1183.
Henriques A, Oliveira DMN, Baksi M, Naveed M, Brito WH, Larrea-Jimenez J, et al. Thermal Conductivity of Barium Bismuthate at Low Temperatures. New Physics: Sae Mulli. 2023 Dec 1;73(12):1183–8.
Henriques, A., et al. “Thermal Conductivity of Barium Bismuthate at Low Temperatures.” New Physics: Sae Mulli, vol. 73, no. 12, Dec. 2023, pp. 1183–88. Scopus, doi:10.3938/NPSM.73.1183.
Henriques A, Oliveira DMN, Baksi M, Naveed M, Brito WH, Larrea-Jimenez J, Kumah D, Wirth S, Martelli V. Thermal Conductivity of Barium Bismuthate at Low Temperatures. New Physics: Sae Mulli. 2023 Dec 1;73(12):1183–1188.

Published In

New Physics: Sae Mulli

DOI

EISSN

2289-0041

ISSN

0374-4914

Publication Date

December 1, 2023

Volume

73

Issue

12

Start / End Page

1183 / 1188