Phase coexistence and large piezoelectricity in BaTiO3-CaSnO3lead-free ceramics

Yang Yang, Yibei Zhou, Juan Ren, Qiaoji Zheng, Kwok Ho Lam, Dunmin Lin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)

Abstract

Ferroelectric phase coexistence was constructed in (1−x)BaTiO 3-xCaSnO 3 lead-free ceramics, and its relationship with the piezoelectricity of the materials was investigated to ascertain potential factors for strong piezoelectric response. It is found that the addition of CaSnO 3 caused a series of phase transitions in the (1−x)BaTiO 3-xCaSnO 3 ceramics, and a ferroelectric coexistence of rhombohedral, orthorhombic, and tetragonal phases is formed at x = 0.08, where the ceramics exhibit the lowest energy barrier and consequently facilitate the polarization rotation and extension, resulting in the optimal piezoelectricity of d 33 and k p values of 550 pC/N and 0.60, respectively. Our study provides an intuitive insight to understand the origin of high piezoelectricity in the ceramics with the coexistence of multiferroelectric phases.

Original languageEnglish
Pages (from-to)2594-2605
Number of pages12
JournalJournal of the American Ceramic Society
Volume101
Issue number6
DOIs
Publication statusPublished - 1 Jun 2018

Keywords

  • barium titanate
  • lead-free ceramics
  • perovskites
  • phase transition
  • piezoelectric materials/properties

ASJC Scopus subject areas

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

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