Crystal Structure and Microwave Dielectric Properties of ATiO3,ATa2O6, AWO4 (A = Ni, Mg, Co) Ceramics

摘要：

Microwave dielectric properties of ATiO3, ATa2O6 and AWO4 (A=Ni, Mg, Co) ceramics were investigated based on the structural characteristics of oxygen octahedra. ATiO3 (trigonal ilmenite), ATa2O6 (tetragonal tri-rutile) and AWO4 (monoclinic wolframite) ceramics have A- and B-site oxygen octahedra with the different sharing type. Quality factor (Qf) of the specimens was affected by the sharing types of oxygen octahedra. The temperature coefficient of resonant frequency (TCF) of the specimens was decreased with increasing of octahedral distortion per molar volume. The dielectric constant (K) of the specimens was dependent on the dielectric polarizabilities and cations bond valence between octahedral cations and oxygen ion.

作者: Eung Soo Kim Chang Jun Jeon

作者单位: Department of Materials Engineering,Kyonggi University,94-6 Yiei-dong,Youngtong-gu,Suwon 443-760,Korea

会议类型: 国际会议

会议名称: 2009 The 18th IEEE International Symposium on Applications of Ferroelectrics(2009年国际铁电学暨IEEE国际铁电应用联合会议)

会议地点: 西安

会议语种:英文

页码: 255-260

在线出版日期: 2009-08-23（万方平台首次上网日期，不代表论文的发表时间）