Dear All, I have to use Si3N4 film for diffusion mask. I will deposit this flim by non reactive RF sputtering. I have seen in literature that such sputter depsited flims are amorphous type. I wanted to know if I can use such flim for oxigen diffusion mask at about 900 degree Centigarde. It would be really nice if somebody can suggest some refence for checking the properties requierd for Si3N4 film used as diffusion mask. Thanks in advance Amol Kumar Singh