Patent ID: 7727921
Filing Date: 2010-06-01
Classification: C04B,H01B,H01G

Abstract:
1. A dielectric ceramic composition comprising a tungsten bronze type complex oxide main component having a composition formula of ((K 1-x Na x )(Sr 2-y-z Ba y Ca z ) m Nb 5 O 15 wherein 0≦x<0.2, y and z are each 0 to 1.4 and y+z≦1.4, 0.96≦m≦1.16, 0.05 to 20 molar parts per 100 molar parts of the main component of R wherein R is at least one member selected from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and 0.05 to 40 molar parts per 100 molar parts of the main component of M wherein M is at least one member selected from the group consisting of Mn, V, Li, Si, Ni, Cr, Co, Fe, Zn, Mg, and Zr.