Patent ID: 6689283
Filing Date: 2004-02-10
Classification: C23F,H01L

Abstract:
A microfabrication method comprising the steps of:forming a mask made of a titanium nitride on a layer to be etched by forming a resist pattern on said layer to be etched and reactive-sputtering a mask layer using a titanium target under a mixture gas of argon and nitrogen, a ratio X of a flow rate of said nitrogen gas with respect to a total gas flow rate being 30%&lE;X&lE;40%, where X=VN2/(VAr+VN2), VN2 is a nitrogen gas flow rate and VAr is an argon gas flow rate; and dry-etching said layer using said mask under a reaction gas of a carbon monoxide with an additive of NH3, wherein said layer to be etched is composed of a cobalt-platinum alloy.