| 摘要 |
PROBLEM TO BE SOLVED: To obtain a dielectric porcelain composition having a large dielectric constant ε, a temperature coefficient τf of resonance frequency close to 0, and a large Q value by adding and blending a dielectric porcelain composition having a large positive temperature coefficient τf of resonance frequency to a dielectric porcelain composition having a large negative temperature coefficient τf of resonance frequency. SOLUTION: In a dielectric porcelain composition expressed by compositional formula: (Li1+1/2.R3+1/2).TiO2, wherein R3+ is one or more selected from La3+, Nd3+, and Sm3+, a specific amount of Bi3+ is incorporated as a portion of the amount of the R3+, thereby, a dielectric constant ε larger than that of the dielectric porcelain composition above can be obtained and the temperature coefficient τf of resonance frequency becomes large, and further, it is possible to control the temperature coefficient τf of resonance frequency, e.g. to bring the value of τf close to 0 by substituting a portion of Li1+ with Na1+. |
