Patent ID: 7091568

Claim:
An electronic device comprising: a gate dielectric layer comprising: oxygen; a first metallic element; and a second metallic element different from the first element, wherein; the first metallic element has a single oxidation state and an oxidation state value; the second metallic element has the single oxidation state and the oxidation state value; within the dielectric layer, a number of first metallic element atoms divided by a sum of the first metallic element atoms and second metallic element atoms is greater than 0.067; and within the dielectric layer, a number of second metallic element atoms divided by the sum of the first metallic element atoms and the second metallic element atoms is greater than 0.067; a first gate electrode within a PMOS portion of the electronic device; and a second gate electrode within an NMOS portion of the electronic device, wherein a composition of the second gate electrode is different from a composition of the first gate electrode.