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- Title
Electrocaloric Effect in Different Oriented BaZr 0.15 Ti 0.85 O 3 Single Crystals.
- Authors
Ou, Yun; Lei, Chihou; Shan, Dongliang
- Abstract
The electrocaloric effect of ferroelectrics is promising for new solid-state refrigeration. However, the current research on the electrocaloric effect of bulk ferroelectrics mainly focuses on (001) orientation. Thus, we studied the electrocaloric effect of BaZr0.15Ti0.85O3 single crystals with different orientations through the nonlinear thermodynamic approach and entropy analysis. The results show that the dipolar entropy of (111)-oriented BaZr0.15Ti0.85O3 single crystals exhibits a greater change after applying an external electric field, compared with (001)- and (110)-orientations, and the (001)-oriented electrocaloric responses are consistent with experimental observations. The (111)-oriented BaZr0.15Ti0.85O3 single crystals have a more significant electrocaloric response, resulting in a broader work temperature range with a large electrocaloric effect. These insights offer an alternative way to enhance the electrocaloric response of ferroelectric single crystals.
- Subjects
PYROELECTRICITY; SINGLE crystals; CRYSTAL orientation; FERROELECTRIC crystals; ELECTRIC fields
- Publication
Materials (1996-1944), 2022, Vol 15, Issue 19, p7018
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma15197018