The Dependence of Read-write Characteristics in Obliquely Evaporated Co-CoO film on Magnetic Motive Force

Read-write characteristics of the obliquely evaporated Co-CoO film were investigated. Symmetric wave-form was observed in magnetic motive force (M.M.F.) of 0.13 ATop. But it changed asymmertrically with broad tail when M.M.F. increased above 0.13 ATop. On the other hand, media noise of dc-erase, ac-erase and modulation had the maximum values in M.M.F. of 0.13 ATop. These noise properties were thought to be related with rewriting in the surface of the film by head trailing side field.