Patent ID: 7830644

Claim:
A lattice-matched capacitor which comprises at least a first and second layer, a) the first layer comprising a conductive oxide electrode material having first a lattice constant which comprises (LaSr) 2 CuO 4 (LSCuO),(LaSr) 2 CoO 4 (LSCoO), or both; and b) the second layer comprising a dielectric material having a second lattice constant which comprises (Ca,Sr)Cu 3 Ti 4 O 12 (CSCTO), CaCu 3 Ti 4 O 12 (CCTO) or both; wherein said first lattice constant, said second lattice constant, or both are engineered by ion substitution to achieve a smaller lattice constant mismatch between said first layer and said second layer and wherein at least part of the calcium ions of said dielectric material are substituted with ions selected from the group consisting of strontium ions, bismuth ions, sodium ions, lanthanum ions, an ion of a lanthanide element, and a combination of any thereof.