Microwave Dielectric Properties of (1-x)MgTiO_3-xSrTiO₃ Ceramics

抄録

Microwave dielectric properties of (1-x)MgTiO₃-xSrTiO₃ system have been investigated. Objective of the present work is to compensate the negative temperature coefficient of the resonant frequency (τ_f ) and to achieve relatively low sintering temperature of MgTiO₃. Ceramic sample with x = 0.036 mol% of SrTiO₃, sintered at 1270C^° for 2h, was measured to have microwave dielectric parameters : ε_r of 21, Q×f value of 71,000 ( at 9GHz ) and τ_f of -1 ppm/c°. (1-x)MgTiO₃-xSrTiO₃ system was found to be superior to 0.95MgTiO₃-0.05CaTiO₃ system in terms of higher Q×f and lower sintering temperature.