Size-Controlled Hydrothermal Synthesis of Bismuth Sodium and Bismuth Potassium Titanates Fine Particles and Application to Lead-Free Piezoelectric Ceramics

Kiyoshi Kanie; Yoshiki Numamoto; Shintaro Tsukamoto; Takafumi Sasaki; Masafumi Nakaya; Junji Tani; Hirofumi Takahashi; Atsushi Muramatsu

doi:10.2320/matertrans.M2010419

Kiyoshi Kanie, Yoshiki Numamoto, Shintaro Tsukamoto, Takafumi Sasaki, Masafumi Nakaya, Junji Tani, Hirofumi Takahashi, Atsushi Muramatsu

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Keywords: perovskite, piezoelectric compound, sodium bismuth titanate, fine particle, piezoelectricity

JOURNAL FREE ACCESS

2011 Volume 52 Issue 7 Pages 1396-1401

DOI https://doi.org/10.2320/matertrans.M2010419

View "Advance Publication" version (May 25, 2011).

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Abstract

Cubic-shaped Bi_0.5Na_0.5TiO₃ (BNT) and Bi_0.5K_0.5TiO₃ (BKT) fine particles with narrow size distribution were directly prepared as a single phase from a suspension of TiO₂ anatase nanoparticles mixed with Bi(OH)₃ in aqueous alkaline metal hydroxides solutions by highly condensed hydrothermal method at 200–250°C for several hours. It was investigated that the effect of particle mean size on the piezoelectric properties of thus obtained BNT and BKT fine particles.

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