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Large electrocaloric response over a broad temperature range near room temperature in BaxSr1−xTiO3 single crystals.
- Source :
- Journal of Applied Physics; 11/28/2019, Vol. 126 Issue 20, pN.PAG-N.PAG, 6p, 1 Chart, 4 Graphs
- Publication Year :
- 2019
-
Abstract
- A nonlinear thermodynamic analysis is adopted to study the electrocaloric effect of B a x S r 1 − x Ti O 3 (BST) solid solutions. The results reveal that the location of maximum adiabatic temperature change Δ T can be shifted from a high temperature to room temperature via tuning chemical composition x. Comparing the electrocaloric properties of BST with those values reported in other electrocaloric materials, it is found that BST with x = 0.7 shows a large electrocaloric response over a broad temperature range near room temperature and possesses a large electrocaloric strength Δ T / Δ E ∼ 1.978 × 10 − 6 K m/V due to a significant change in polarization with respect to temperature. This suggests that BST with high electrocaloric performance has potential for practical cooling applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 126
- Issue :
- 20
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 139907843
- Full Text :
- https://doi.org/10.1063/1.5123717