Mapping coercivity variation on patterned magneto-optical media

Summary form only given. Our previous studies indicated that the coercivity of patterned magneto-optical (MO) thin film media is quite different from the non-patterned samples. Especially, the coercivity of the hole area is quite different from the land area. In order to understand the quantitative difference of the coercivity between the hole and land regions, we have used a Kerr microscope to acquire the variation feature of the coercivity over the patterned and non-patterned MO media surface.