MULTILAYER CERAMIC CAPACITOR AND METHOD FOR MANUFACTURING SAME

WIPO Patent Application WO/2014/024527

A1

Provided are: a highly reliable multilayer ceramic capacitor, the insulation resistance of which changes little over time in a high-temperature load test, and which has excellent resistance to deterioration of the insulating properties; and a method for manufacturing the multilayer ceramic capacitor. A multilayer body is configured to contain Si, Mn, Al and V, and a perovskite compound that contains Sr, Ba, Zr and Ti and that optionally contains Ca, and to satisfy, when the total content of Zr and Ti is taken as 100 parts by mole, the following conditions: [a] the total content (m) of Sr, Ba and Ca satisfies 100 ≤ m ≤ 105; [b] the Si content (a) satisfies 0.1 ≤ a ≤ 4.0; [c] the Mn content (b) satisfies 0.1 ≤ b ≤ 4.0; [d] the Al content (c) satisfies 0.01 ≤ c ≤ 3.0; [e] the V content (d) satisfies 0.01 ≤ d ≤ 0.3; [f] the molar ratio (w) of Sr to the total of Sr, Ba and Ca satisfies 0.60 ≤ w ≤ 0.95; [g] the molar ratio (y) of Ca to the total of Sr, Ba and Ca satisfies 0 ≤ y ≤ 0.35; [h] the molar ratio (z) of Zr to the total of Zr and Ti satisfies 0.92 ≤ z ≤ 0.98; the total of the value of (w) and the value of (y) satisfies 0.6 ≤ w + y ≤ 0.95; and the crystal grains have an average grain size of 1.2 μm or less.

NISHIMURA HITOSHI (JP)
NAITO MASAHIRO (JP)
HIRATA TOMOTAKA (JP)
ISOTA SHINYA (JP)

PCT/JP2013/062558

February 13, 2014

April 30, 2013

Click for automatic bibliography generation  

MURATA MANUFACTURING CO (JP)

H01G4/12; H01G4/30

JP2001278664A	2001-10-10
JP2003063867A	2003-03-05
JP2009263209A	2009-11-12
JP2007055835A	2007-03-08

NISHIZAWA, HITOSHI (JP)
Hitoshi Nishizawa (JP)

View/Download PDF      PDF Help

Previous Patent: FIBER LASER DEVICE

Next Patent: SOUND GENERATOR, SOUND GENERATION DEVICE, AND ELECTRONIC DEVICE