Structure and Dielectric Properties of Ba_(6-3x)(Sm_(1-y)Pr_y)_(8+2x)Ti_(18)O_(54)Microwave Dielectric Ceramics

In this paper.the structure and properties of Ba6-3x (Sm1-y Pry)8+2x. Ti18 O54 (x= 0. 5, 0. 6, y=0. 0 .0. 1 .0. 2) were studied microwave dielectric ceramics. The results show that in Sm- Pr series, solid solutions in which Pr ions are substituted for Sin ions found. With the increasing of Pr content, the lattice parameter rises up linearly. The sintering temperature is 1400C. The substitution of Pr for Sin improves the dielectric properties in increasing the value of dielectric constant and keeping the loss low. And the composition with zero temperature coefficient of resonance frequency can be found.