A thermodynamic potential, energy storage performances, and electrocaloric effects of Ba1-xSrxTiO3 single crystals
Abstract
A thermodynamic potential for Ba1-xSrxTiO3 solid solutions is developed, and the corresponding thermodynamic properties of Ba1-xSrxTiO3 single crystals are calculated. The predicted temperature-composition phase diagram from the thermodynamic potential agrees well with the experimental measurements. Based on this potential, the energy storage performances and electrocaloric effects of Ba1-xSrxTiO3 single crystals are obtained using the phase-field method. It is found that there is an optimal Sr concentration which maximizes the discharged energy density of a Ba1-xSrxTiO3 single crystal under an applied electric field. The electrocaloric effects of Ba0.8Sr0.2TiO3, Ba0.7Sr0.3TiO3, Ba0.6Sr0.4TiO3, and Ba0.5Sr0.5TiO3 single crystals are also predicted, from which the corresponding optimal temperatures are identified.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 05, 2018
- Source ID
- 10.1063/1.5020515
Entities
People
- J. J. Wang
- L. Q. Chen
- T. N. Yang
- Xiang Ming Chen
- Y. H. Huang
- Yong Jun Wu
Organizations
- Air Force Office of Scientific Research
- National Natural Science Foundation of China
- Pennsylvania State University
- Zhejiang Provincial Natural Science Foundation
- Zhejiang University