Electrocaloric effect in lead-free relaxor (1-x)(Sr0.7Bi0.2)TiO3+x(Na0.5Bi0.5)TiO3 material system

Jinglei Li, Xiaobo Zhao, Zhuo Xu, Tian Zhang, Xiaoshi Qian, Ying Hou, Lu Yang, Shujun Zhang

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The relationship between electrocaloric effect (ECE) and electrostrictive strain over a broad electric field was studied in (1-x)(Sr0.7Bi0.2)TiO3+x(Na0.5Bi0.5)TiO3 relaxor based lead-free ceramics, where the electric field induced strain can reach the level of 0.28% at 12 MV/m. The experimental data revealed that the composition with highest strain response also generated the largest ECE near room temperature, e.g., ΔS=3.6 J kg−1 K−1 and an adiabatic temperature change ΔT=2.4 K at 13 MV/m. This research provides an effective approach for designing new ECE materials.

Original languageEnglish (US)
Pages (from-to)68-71
Number of pages4
JournalMaterials Letters
Volume187
DOIs
StatePublished - Jan 15 2017

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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