Patent ID: 6953721

Claim:
A capacitor forming method comprising: forming a first capacitor electrode layer over a substrate; depositing a substantially amorphous first high K capacitor dielectric material layer over the first capacitor electrode layer; converting the substantially amorphous first high K capacitor dielectric material layer to be substantially crystalline; after the converting, depositing a substantially amorphous second high K capacitor dielectric material layer over the substantially crystalline first high K capacitor dielectric material layer, wherein the first and second dielectric material layers comprise different chemical compositions; forming a second capacitor electrode layer over the substantially amorphous second high K capacitor dielectric material layer; and after the converting and before forming the second capacitor electrode layer, oxidize annealing the second high K capacitor dielectric material layer in an oxygen containing atmosphere at a temperature of no greater than about 600° C. and effective to maintain the second high K capacitor dielectric material layer substantially amorphous.