Giant Negative Electrocaloric Effect in (Pb,La)(Zr,Sn,Ti)O3 Antiferroelectrics Near Room Temperature

Fangping Zhuo, Qiang Li, Jinghan Gao, Yongjie Ji, Qingfeng Yan, Yiling Zhang, Hong Hui Wu, Xiao Qing Xi, Xiangcheng Chu, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

(Pb0.97La0.02)(ZrxSn0.94-xTi0.06)O3 (PLZST) antiferroelectric ceramics with x = 0.75-0.90 have been fabricated and found to be a novel electrocaloric material system with a giant negative electrocaloric effect (ΔT = -11.5 K) and a large electrocaloric strength (|ΔT/ΔE| = 0.105 K cm kV-1) near room temperature. Additionally, the PLZST antiferroelectric ceramic also exhibits a large positive electrocaloric effect around the Curie temperature. The giant negative effect and the coexistence of both positive and negative electrocaloric effects in one material indicate a promising possibility to develop mid- to large-scale solid-state cooling devices with high efficiency.

Original languageEnglish (US)
Pages (from-to)11747-11755
Number of pages9
JournalACS Applied Materials and Interfaces
Volume10
Issue number14
DOIs
StatePublished - Apr 11 2018

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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