May have overheated the magnetron and loose the magnetic field strength of of your permenant magnets -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of saravan kallempudi Sent: Thursday, August 02, 2007 6:55 AM To: mems-talk@memsnet.org Subject: [mems-talk] Problem with DC Sputter Dear Members, I have a problem with my DC sputter. We used to sputter Nickel but we have strange problem now having plasma inside chamber but unable to sputter nickel. I thought of target poisoning and I cleaned the target with Nitricacid and then also I was not able to move forward. Can anyone suggest me in this!