Patent ID: 8476155

Claim:
A method of fabricating a semiconductor device, comprising: forming an underlying layer; forming a preliminary dielectric including hafnium (Hf), oxygen (O) and an “A” element on the underlying layer, wherein the preliminary dielectric is formed in an amorphous structure or a mixed structure of an amorphous structure and an “M” crystalline structure, and the “A” element constituting about 1 at % to about 5 at % of the total content of the “A” element and hafnium (Hf) in the preliminary dielectric; performing a nitridation process to add nitrogen to the preliminary dielectric; performing a phase transition process to change the nitrogen-containing preliminary dielectric into a “T” crystalline dielectric having a “T” crystalline structure, which is different from the “M” crystalline structure; and forming an upper layer on the “T” crystalline dielectric.