I've had this problem in the past, i.e. formation of Pt-Si alloys during an anneal with (I think) a Cr adhesion layer. Could anyone recommend a material stack Pt/ adhesion layer/ diffusion barrier? Thanks, Michael U. of Louisville >>> Oliver Horn3/3/2008 4:38 AM >>> Hello Natsuki, you will get PtSi or PtSi2 if you heat up Pt on Si without diffusion barrier, even at 260°C. The adhesion is only a bit improved. Oliver