发明名称 Electronic device, dielectric ceramic composition and the production method
摘要 A production method of a dielectric ceramic composition comprising a main component including a compound having a perovskite-type crystal structure expressed by a composition formula (Ba<SUB>1-x</SUB>Ca<SUB>x</SUB>) (Ti<SUB>1-y</SUB>Zr<SUB>y</SUB>)O<SUB>3 </SUB>(note that 0<=x<=0.2, 0<=y<=0.2), and a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu); comprising steps of obtaining a post-reaction material by bringing a material of the main component to react in advance with a part of a material of the fourth subcomponent to be included in the dielectric ceramic composition, and adding rest of material of the fourth subcomponent to be included in the dielectric ceramic composition into the post-reaction material. According to the present invention, both of a dielectric ceramic composition capable of improving the specific permittivity and a temperature characteristic of capacitance can be preferable, and the production method can be provided.
申请公布号 US2007287625(A1) 申请公布日期 2007.12.13
申请号 US20070808548 申请日期 2007.06.11
申请人 TDK CORPORATION 发明人 YANAGIDA MIYUKI;SATO AKIRA
分类号 C04B35/468;B28B3/00;C04B35/00 主分类号 C04B35/468
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