Microwave dielectric properties of Mg(Zr0.05Ti0.95)O3-SrTiO3 ceramics

• Published in: Journal of materials science. Materials in electronics Vol. 23; no. 2; pp. 572 - 575
• Main Authors: Yu, Hongtao, Cheng, Jilin, Zhang, Wenbo, Liu, Jingsong, Xu, Guangliang
• Format: Journal Article
• Language: English
• Published: Boston Springer US 2012; Springer; Springer Nature B.V
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric constant; Dielectric properties; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Materials Science; Microwaves; Optical and Electronic Materials; Optimization; Permittivity (dielectric function); Physics; Quality factor; Resonant frequencies; Sintering; Resonant Frequency; Dielectric Constant; Microwave Dielectric Property; Increase Sinter Temperature; High Quality Factor; Temperature coefficient; Material processing; Quality factor; Microwave radiation; Sintering; Resonance frequency; Dielectric properties; Strontium titanates; Ceramics; Permittivity
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-011-0442-6

The microwave dielectric properties of (1−x)Mg(Zr 0.05 Ti 0.95 )O 3 -xSrTiO 3 ceramics prepared by conventional solid processing were investigated. With increasing x, the dielectric constant and the quality factor decreased, and the temperature coefficient of resonant frequency was tuned from negative to positive value. The effect of sintering temperature on microwave properties was also studied. After sintering at 1,390 °C for 4 h, the ceramics exhibited a near zero temperature coefficient of resonant frequency about 2.1 ppm/°C, an optimum dielectric constant of 20.9 and a high quality factor of 203000 (6.8 GHz), at the level of x = 0.05.