Patent ID: 7262544

Claim:
A dielectric element comprising a lower electrode layer, a perovskite dielectric layer and an upper electrode layer in this order on a substrate, wherein at least one of the lower and upper electrode layers comprises a first electrode layer mainly composed of a metal and a second electrode layer mainly composed of a perovskite oxide, said second electrode layer being formed at a side of said dielectric layer, each of the first electrode layer, second electrode layer and dielectric layer has a (111) preferentially or (111) uniaxially oriented crystal structure, and the first electrode layer, second electrode layer and dielectric layer satisfy the relationship represented by the general formula (1): f3>f2>f1≧0.1° (1) where f 1 , f 2 and f 3 are half bandwidths of the X-ray diffraction (XRD) peaks of the first electrode layer, second electrode layer and dielectric layer in the preferentially or uniaxially orientation axis, the breadth being determined by fitting a pseudo-Voigt function, and f 1 is in a range from 0.1 to 10°.