Patent ID: 7820506

Claim:
A method of forming a dielectric structure, comprising: forming a first portion of the dielectric structure; the first portion comprising a homogeneous mixture of two oxides; one of said two oxides of the mixture of the first portion having a dielectric constant of greater than or equal to 25, and the other of said two oxides of the mixture of the first portion having a dielectric constant of less than or equal to 20; forming a second portion of the dielectric structure over and directly against the first portion; the second portion consisting of a composition having a dielectric constant of greater than or equal to 25; forming a third portion of the dielectric structure over and directly against the second portion; the third portion comprising a homogeneous mixture of two oxides; one of said two oxides of the mixture of the third portion having a dielectric constant of greater than or equal to 25, and the other of said two oxides of the mixture of the third portion having a dielectric constant of less than or equal to 20; wherein the first and third portions are more amorphous than the second portion; and wherein the first and third portions are different in composition from one another.