Patent ID: 7241368
Filing Date: 2007-07-10
Classification: C01B,C04B,C22C,C23C,H01L

Abstract:
1. A hafnium silicide target for forming a gate oxide film composed of HfSi 0.05-0.37 , said target having a texture composed of a compatible phase consisting essentially of a Hf 2 Si phase and a Hf phase, said target having an oxygen content of 500 to 10,000 ppm, and said target being obtained by mixing a hathium hydride powder with a silicon powder in a molar ratio of 1:0.05 to 1:0.37, sintering said hafnium hydride powder and silicon powder mixture at 600 to 800° C. to obtain a hafnium silicide powder formed from a compatible phase principally including a Hf 2 Si phase and a Hf phase, and hot pressing said hafnium silicide powder.