Patent ID: 8216701

Claim:
A compositionally stratified perovskite oxide multilayer heterostructure material, comprising: a lower layer of crystallized Ba 1-x Sr x TiO 3 perovskite oxide having no preferred crystallographic orientation where x is in the range of 0.36-0.44, inclusive, deposited on a substrate; an intermediate layer of crystallized Ba 1-x Sr x TiO 3 perovskite oxide having no preferred crystallographic orientation where x is in the range of 0.23-0.27, inclusive, in direct contact with the lower layer; and an upper layer of crystallized Ba 1-x Sr x TiO 3 perovskite oxide having no preferred crystallographic orientation where x in the range of 0.08-0.13, inclusive, in direct contact with the intermediate layer, wherein the dielectric constant of the multilayer heterostructure material is less than 500.