Gurvinderjit, I suspect that your film is "beading" like water on a waxed surface and forming into discrete gold islands. Gold does not wet or adhere to oxides well, particularly in very thin layers. Heating the surface gives the Au atoms the energy they need to migrate. Depending upon your application, you should try a thicker layer and/or flashes (thin layers) of Cr/Cu, Ti or Ti/W under the Au for better adhesion. Good luck. -- Marc Straub Staff Engineer, Product Development Services Coventor, Inc. (Formerly Microcosm Technologies) 7 Corporate Park, Suite 260 Irvine, CA 92606 Ph: 949-756-0033 Fax: 949-756-0070 marc.straub@XXXXcoventor.com [remove the "XXXX"] > -----Original Message----- > Date: Mon, 20 May 2002 11:20:15 +0530 (IST) > From: Gurvinderjit Singh> To: mems-talk@memsnet.org > Subject: [mems-talk] Gold film > Reply-To: mems-talk@memsnet.org > > Dear friend i have one query. > I am depositing gold film (thickness 0.1 micron)by thermal evaporation on > oxides, > but when i am annealing my sample to 700K this gold film become non > -conductive may be duo to formation of gold oxide. But from > literature i found > that gold should not become oxide till 1200K. I also read people using > gold electrodes (thin film by thermal evaporation) on their samples and > work till 900k kindly let me know where i am doing mistake, wether to take > more thick film or something else. > > > > __________________________________________________________________ > _____________ > > > Gurvinderjit Singh Ahluwalia Tel: +91-0731-488656 > Laser Materials Division Fax: +91-0731-488650 > Centre for Advanced Technology email: gjit@cat.ernet.in > Indore - 452 013 INDIA