IP Library Granted Patent US 8,283,272
Granted Patent B2
US 8,283,272 · App. 12/913,370 · Granted Oct 9, 2012

Dielectric ceramic composition

Assignee: TDK Corporation
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Quick Facts
Patent No.
US 8,283,272
App. No.
12/913,370
Granted
Oct 9, 2012
Kind
B2
Abstract

A purpose of the present invention is to provide a dielectric ceramic composition which is available to obtain a multilayer ceramic capacitor having a high specific permittivity and a small temperature change of capacitance. A dielectric ceramic composition comprises a dielectric main component composed of 86.32 to 97.64 mol % of BaTiO 3 , 0.01 to 10.00 mol % of Y 2 O 3 and 0.01 to 10.00 mol % of MgO and 0.001 to 0.200 mol % of V 2 O 5 , 0.01 to 1.0 mol % of more than one kind of a first additive selected from a group composed of MnO, Cr 2 O 3 , Co 2 O 3 , 0.5 to 10.0 mol % of a second additive which is {Baα, Ca (1−α)}SiO 3 (note, 0≦α≦1), and Sr: 10 to 500 ppm, S: 10 to 50 ppm, Al: 10 to 50 ppm, Fe: 10 to 50 ppm, Zr: 100 to 800 ppm, Y: 10 to 100 ppm, Hf: 10 to 100 ppm to 100 parts by weight of BaTiO 3 .

Claims (12)

1. A dielectric ceramic composition comprising;

a dielectric main component composed of 86.32 to 97.64 mol % of BaTiO 3 , 0.01 to 10.00 mol % of Y 2 O 3 and 0.01 to 10.00 mol % MgO and 0.001 to 0.200 mol % V 2 O 5 ,

0.01 to 1.0 mol % of more than one selected from the group consisting of MnO, Cr 2 O 3 , Co 2 O 3 ,

0.5 to 10.0 mol % of a second additive which is {Baα, Ca (1−α)}SiO 3 (note, 0≦α≦1), and

Sr: 10 to 500 ppm

S: 10 to 50 ppm

Al: 10 to 50 ppm

Fe: 10 to 50 ppm

Zr: 100 to 800 ppm

Y: 10 to 100 ppm

Hf: 10 to 100 ppm

to 100 parts by weight of BaTiO 3 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 28, 2010
From: HASHIMOTO, SHINSUKE; KONNO, MASATO; NITTA, MOMOYO; YAMASHITA, TOMOHIRO; SASAKI, HIROSHI
To: TDK CORPORATION
Reel/Frame 025210/0737 →
Priority Claims (1)
JP 2009-262172 · Nov 17, 2009 · national
Continuity (1)
Related Publication 20110118104A1 · May 19, 2011