Flux growth and characterization of lead-free piezoelectric single crystal [Bi0.5(Na1-xKx)0.5]TiO3

Xiujie Yi, Huanchu Chen, Wenwu Cao, Minglei Zhao, Dongmei Yang, Guangpeng Ma, Changhong Yang, Jianru Han

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49 Scopus citations

Abstract

Lead-free piezoelectric single crystal of [Bi0.5(Na 1-xKx)0.5]TiO3 (BNTKx) with size of 10×10×5 mm3 has been successfully grown by the self-flux method. The temperature dependence of dielectric constant was measured and the peak temperature of dielectric constant was found to be 45° higher than that of pure (Bi0.5Na0.5)TiO3 crystal. X-ray diffraction pattern indicated that the BNTK50 crystal is tetragonal (symmetry group 4 mm) with a=b=0.3917nm and c=0.4011nm, respectively. Differential scanning calorimetry showed that the crystal was congruent melting during growth. Superior piezoelectric and electromechanical properties were found in these lead-free crystals.

Original languageEnglish (US)
Pages (from-to)364-369
Number of pages6
JournalJournal of Crystal Growth
Volume281
Issue number2-4
DOIs
StatePublished - Aug 1 2005

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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