Method of forming a sputtering target for use in producing a magneto-optic recording medium.

摘要

A sputtering target for use in producing a magneto-optic recording medium of a rare earth-transition metal alloy by sputtering, the sputtering target being made of a cast alloy having an alloy phase (1) of one or more rare earth metals and of one or more transition metals, characterised in that the cast alloy also comprises a phase (3) of a rare earth metal or of an alloy of a plurality of rare earth metals, and a phase (2) of a transition metal or of an alloy of a plurality of transition metals.