Dielectric ceramic and laminated ceramic capacitor

A dielectric ceramic (and capacitor containing it) balancing high temperature load characteristics and temperature characteristics of capacitance even when layer thickness is less than 1 mum has a mixture of different crystal grains containing a barium titanate compound as the main constituent. The...

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Hauptverfasser: NAKAMURA TOMOYUKI, MATSUDA MAKOTO, SHIOTA AKIHIRO, MURAKI TOMONORI
Format: Patent
Sprache:eng
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Zusammenfassung:A dielectric ceramic (and capacitor containing it) balancing high temperature load characteristics and temperature characteristics of capacitance even when layer thickness is less than 1 mum has a mixture of different crystal grains containing a barium titanate compound as the main constituent. The first crystal grains can contain rare earth element solid solution region 1 at the surface layer section. The second crystal grains have a core-shell structure including a shell section having a rare earth element solid solution present. The first and second crystal grains are 12% to 84% f and 16% to 88%, respectively, of the total number of crystal grains.