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PROBLEM TO BE SOLVED : To obtain a dielectric porcelain composition, dielectric porcelain and dielectric resonator, having high εr and high Q value in high frequency region and making dispersion of εr, Q value and a temperature characteristic τf of resonance frequency small. SOLUTION : This dielectric porcelain composition contains at least rare earth element, Al, M (M : Sr or Sr and Ca) and Ti as metal elements and contains perovskite type crystalline phase represented by the compositional formula; aLn2 OX.bAl2 O3 .cMO.dBaO.eTiO2 (Ln : rare earth element) [0.056<=a<=0.450, 0.056<=b<=0.450, 100<=c<=0.500, 0<=d<=0.100, 0.100
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