Patent ID: 7335329
Filing Date: 2008-02-26
Classification: H01G

Abstract:
1. A production method of a multilayer ceramic capacitor, comprising: firing a green chip to be a capacitor element body including dielectric layers and internal electrode layers in a reducing atmosphere; and performing heat processing under an atmosphere of which oxygen partial pressure is higher than the reducing atmosphere; wherein an average particle diameter (R), in a direction parallel with the internal electrode layers, in dielectric particles constituting a dielectric layer of said dielectric layers is made to be larger than thickness (d) of said dielectric layer, wherein a ratio (R/d) between said average particle diameter (R) and the thickness (d) of said dielectric layer satisfies 1<R/d<3, wherein the thickness (d) of said dielectric layer is less than 3 μm, wherein the internal electrode layers are separated by a distance of no more than the size of at least one particle of said dielectric particles, and wherein at least one of said dielectric layers includes at least said dielectric particles and a grain boundary phase, and an area ratio of said grain boundary phase in a section of said dielectric layer is 2% or less.