Volume 118, Number 1, April 2017
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||12 June 2017|
Multicaloric effects in PbZr0.2Ti0.8O3 thin films with 90° domain structure
1 Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology - Hunan Xiangtan 411201, China
2 School of Materials Science and Engineering, Xiangtan University - Hunan Xiangtan 411105, China
3 School of Materials and Engineering, Hunan University of Science and Technology Hunan Xiangtan 411201, China
4 China Three Gorges Corporation - Chengdu, Sichuan 610041, China
Received: 3 May 2017
Accepted: 30 May 2017
The multicaloric effects of a PbZr0.2Ti0.8O3 thin film with 90° domain structure at room temperature are predicted using a phase-field simulation. The calculation results indicate that the giant negative multicaloric ΔTE,σ can reach −11 K which far exceeds the values associated with either elastocaloric or electrocaloric effects. In addition, the multicaloric effect is larger than the stress-mediated electrocaloric effect or electrically mediated elastocaloric effect, and the transition of the 90° domain structure to a monodomain greatly affects the caloric effects of PbZr0.2Ti0.8O3 thin films.
PACS: 77.70.+a – Pyroelectric and electrocaloric effects / 77.80.Dj – Domain structure; hysteresis / 77.84.Cg – PZT ceramics and other titanates
© EPLA, 2017
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