Patent ID: 6824898
Filing Date: 2004-11-30
Classification: C23C,C30B,H01L

Abstract:
A dielectric thin film characterized in that {X1} having a 12-oxygen atom coordination structure and {X3} which is different in coordination structure from said {X1} are each constituted by at least one element selected from the group consisting of Ca, Mg, Sr, Ba and Pb, where {X1}â‰ {X3}, that {X2} having a 6-oxygen atom coordination structure is constituted by at least one element selected from the group consisting of Ti and Zr, and that O presents oxygen, whereby {X3}O is inserted between perovskite layers having a composition of {X1}{X2}O3 and formed on a substrate similar in crystallographic structure thereto to induce lattice strains due to lattice mismatch between said layered perovskite film and said substrate.