The 66th JSAP Spring Meeting, 2019

Presentation information

Poster presentation

9 Applied Materials Science » 9.1 Dielectrics, ferroelectrics

[10a-PA4-1~10] 9.1 Dielectrics, ferroelectrics

Sun. Mar 10, 2019 9:30 AM - 11:30 AM PA4 (PA)

9:30 AM - 11:30 AM

[10a-PA4-2] Composition dependence of ferroelectric characteristics, crystal and electronic structures
of (K, Na)NbO3-BiAlO3 based ferroelectric ceramics

Yoshiaki Hirasawa1, Naoya Ishida1, Naoto Kitamura1, Yasushi Idemoto1 (1.Tokyo Univ. of Science)

Keywords:crystal structure

(K, Na)NbO3 based ceramics is concidered to be one of the most promising lead-free piezoelectric ceramics, but there are some problems such as volatilization of alkali metals. In this study, we investigated the effect of BiAlO3 addition and spark plasma sintering(SPS) method on the sinterability. We investigated relation between ferroelectric properties and crystal, electric structures obtained by the Rietveld analysis using synchrotron X-ray diffraction date.