Growth and characterization of lead-free ferroelectric (K,Na,Li)(Nb,Ta,Sb)O3 single crystal

Junjun Wang, Limei Zheng, Bin Yang, Rui Wang, Xiaoqing Huo, Shijing Sang, Jie Wu, Yunfei Chang, Huanpo Ning, Tianquan Lv, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

In this work, a large size lead-free piezoelectric single crystal, (K,Na,Li)(Nb,Ta,Sb)O3 (KNLNTS) with the dimensions of 8.5×8.5×13.5 mm3 was successfully grown by the top-seeded solution growth method. This KNLNTS single crystal with high compositional homogeneity is in the tetragonal phase at room temperature. The Curie temperature TC of the tetragonal-cubic phase transition temperature is 210 °C. The piezoelectric coefficients and electromechanical coupling factors of the [001]C oriented KNLNTS single crystal are d33=172.55 pC/N, d31=-71.90 pC/N, k31=0.327, k33=0.523, and kt=0.541. In addition, the crystal shows good thermal stability so that it can be used for making high temperature electromechanical devices.

Original languageEnglish (US)
Pages (from-to)39-43
Number of pages5
JournalJournal of Crystal Growth
Volume409
DOIs
StatePublished - Jan 1 2015

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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