Electrical properties and microstructure of phase combination in BaTiO3-based Ceramics

作     者：N Funsueb A Limpichaipanit A Ngamjarurojana 

作者机构：Department of Physics and Materials Science Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand PhD's Degree Program in Applied Physics Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand 

出 版 物：《Journal of Physics: Conference Series》 

年 卷 期：2018年第1144卷第1期

学科分类：07[理学] 0702[理学-物理学] 

摘      要：Perovskite barium titanate (BaTiO3) ceramics are widely used in electronics industries such as capacitors, sensors and actuators. BaTiO3-based ceramics have good dielectric, ferroelectric and piezoelectric properties. BaTiO3 powder was fabricated by mixed-oxide method via a vibro-milling technique. The pellets were then placed in a high purity alumina crucible in air and sintered at 1375 °C for 1, 2, 4, 6 and 8h. X-ray diffraction technique was used to investigate phase formation of BaTiO3 ceramics. Grain size was measured by scanning electron microscopy (SEM). The computer-controlled dielectric measurement system consisted of a high precision LCR-meter. Electric field induced polarization was measured by Sawyer-Tower circuit. In this work, the effect of phase combination in BaTiO3 ceramics on electrical properties (dielectric and electric field induced polarization) and microstructure was investigated.