抄録
Electroless plated Co-Ni-Re-P alloy films for perpendicular magnetic recording media were investigated in order to clarify the origin of perpendicular coercivity, Hc (⊥), at the initial deposition stage. The perpendicular coercivity, Hc (⊥), contained a somewhat various Hc (⊥) component. From the coercivity angular variation measurement, the magnetization reversal of all films was found to obey the rotational mechanism. The columnar structure could not be observed clearly by SEM observation. It was confirmed that the Hc (⊥) value difference at the initial deposition stage was caused by the different degree of c-axis orientation. The capability of electroless plating for perpendicular magnetic recording media preparation is widen by the control of the degree of c-axis orientation at the initial deposition stage, without change in the magnetic reversal mechanism and cross section morphology.
