[10a-Z26-1~8] 9.1 Dielectrics, ferroelectrics

[10a-Z26-2] Effect of Ta, Mo, W substitution on ferroelectric characteristics of Bi_0.5K_0.5TiO₃-BiFeO₃ based ferroelectric ceramics and crystal and electronic structure analysis using synchrotron X-ray

〇Kawamoto Tsuyoshi¹, Naoya Ishida¹, Naoto Kitamura¹, Yasushi Idemoto¹ (1.Tokyo Univ. of Science)

Keywords:Crystal structure, Ferroelectric material

Lead zirconate titanate (PZT) is widely used as a ferroelectric material used in electronic devices, but since lead oxide is toxic, we have focused on lead-free material (Bi_0.5K_0.5)TiO₃-BiFeO₃ (BKTBF) based solid solution, and investigated the relationship between the ferroelectric properties and crystal structure of BKTBF based solid solutions. In this research, we performed Mo, W substitutions for (Bi_0.5K_0.5)TiO₃-BiFeO₃-KTaO₃ and evaluated ferroelectric characteristics and crystal structures using synchrotron X-ray diffraction. The relationship between the ferroelectric characteristics and the crystal and electronic structures were investigated.