| 简介 |
A dielectric ceramic material comprising the composition : 100(Ba1-xCax)mTiO3+aMnO+bCuO+cSiO2+dMgO+eRO (wherein coefficients 100, a, b, c, d, and e each represent mols; m represents the molar ratio of (Ba1-xCax) to Ti; and RO represents at least one rare-earth element oxide selected from Y2O3, La2O3, 2CeO2, Nd2O3, Sm2O3, Eu2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3, Tm2O3, Yb2O3 and Lu2O3), wherein m, x, a, b, c, d, and e satisfy the relationships : 0.998<=m<=1.030, 0.04<=x<=0.15, 0.01<=a<=5, 0.05<=b<=5, 0.2<=c<=8, 0.05<=d<=3.0, and 0.05<=e<=2.5, and the dielectric ceramic material has an average grain size of 0.3 mum to 0.7 mum, is used to make reliable multilayer ceramic capacitors including dielectric ceramic layers each having a small thickness of about 1 mum. |
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