Patent ID: 7580241
Filing Date: 2009-08-25
Classification: C04B,H01G,Y10T

Abstract:
1. A thin film capacitor element composition having a bismuth layered compound with a c-axis being oriented in a direction substantially vertical to a substrate surface, wherein said bismuth layered compound is expressed by the formula (Bi at least part of the Bi and/or A of said bismuth layered compound is substituted by a rare earth element (at least one element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu), and the number of moles substituted by said rare earth element with respect to the number of moles (m+1) of the total of Bi and A is larger than 1.0 and 2.8 or less.