| 摘要 |
A dielectric ceramic composition obtained by firing a mixture containing a glass component and a dielectric component represented by the compositional formula a.Li<SUB>2</SUB>O-b.(CaO<SUB>1-x</SUB>-SrO<SUB>x</SUB>)-c.R<SUB>2</SUB>O<SUB>3</SUB>-d.TiO<SUB>2 </SUB>(wherein x satisfies 0<=x<1; R is at least one selected from La, Y and other rare-earth metals; and a, b, c and d satisfy 0<=a<=20 mol %, 0<=b<=45 mol %, 0<c<=20 mol %, 40<=d<=80 mol % and a+b+c+d=100 mol %). The dielectric component is prepared by calcining a raw material. The glass component contains at least a bismuth glass. After the firing, a ratio (second phase/first phase) in X-ray diffraction peak intensity of the second phase containing the rare-earth element to the first phase having a perovskite structure, as a main phase, does not exceed 20%.
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