Correlation of grain size, phase transition and piezoelectric properties in Ba0.85Ca0.15Ti0.90Zr0.10O3ceramics

H. L. Sun, Q. J. Zheng, Y. Wan, Y. Chen, X. Wu, Kin Wing Kwok, H. L.W. Chan, D. M. Lin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

19 Citations (Scopus)

Abstract

Pb-free ceramics Ba0.85Ca0.15Ti0.90Zr0.10O3inspired by the excellent piezoelectricity of morphotropic phase boundary deriving from a tricritical point have been prepared by a solid state reaction route and the effects of grain size and room-temperature phases of the ceramics have been studied in detail. When sintering temperature rises from 1320 to 1560 °C with controlling the dwell time for 2 h, the ceramic sintered at 1480 °C possesses the optimum piezoelectricity. We choose 1360 and 1480 °C as two distinctive sintering temperatures to further study the effect of dwell time on the electrical properties of the ceramics. The results show that the improved piezoelectric behavior (d33 ~ 416 pC/N and kp ~ 55.8 %) is demonstrated for the Ba0.85Ca0.15Ti0.90Zr0.10O3ceramic at an optimal sintering temperature of 1480 °C and dwell time of 2 h, which is attributed to the largest grain size together with more noticeable rhombohedral–tetragonal phase transition near room-temperature.
Original languageEnglish
Pages (from-to)5270-5278
Number of pages9
JournalJournal of Materials Science: Materials in Electronics
Volume26
Issue number7
DOIs
Publication statusPublished - 24 Jul 2015

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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