| 简介 |
PROBLEM TO BE SOLVED : To obtain a dielectric porcelain composition having high εr and high Q value in the high frequency region and small temperature characteristics τf of resonance frequency. SOLUTION : This dielectric porcelain composition contains at least a rare earth element (Ln), Al, M (M is Ca or/and Sr) and Ti as metal elements and is obtained by crystallizing so that the average particle size of crystals in the crystal phase consisting mainly of oxides of M and Ti is made larger than that of crystals in the crystal phase consisting mainly of oxides of Ln and Al. |
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