The electrocaloric effect and thermal stability of 0.94(Bi0.5Na0.5)TiO3–0.06BaTiO3 modified by WO3

  • Ju Wang
  • , Qiang Li
  • , Yuan Ma
  • , Guocai Liu
  • , Yuwei Zhao
  • , Huiqing Fan

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The solid-state reaction method is used to prepare the 0.94(Bi0.5Na0.5)TiO3–0.06BaTiO3 modified by WO3 lead-free ceramic. The unpoled (Bi0.5Na0.5)0.94Ba0.06Ti1−(3/2)xWxO3 with pseudo-cubic structure undergoes transition from ferroelectric to relaxor ferroelectric that happens in the Td. The maximum reversible temperature change |ΔT| = 0.8 K occurs at the room temperature due to the decline of temperature. In addition, |ΔT| = 0.15 K at the (Bi0.5Na0.5)0.94Ba0.06Ti1−(3/2)xWxO3 with x = 0.75 mol% exhibits good thermal stability at the temperature range of 303–413 K.

Original languageEnglish
Article number517
JournalApplied Physics A: Materials Science and Processing
Volume122
Issue number5
DOIs
StatePublished - 1 May 2016

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