Abstract
Magneto-optical recording materials with high remanent Kerr rotation at short wavelengths were successfully obtained in a trilayer form by sandwiching NdCo amorphous films with an in-plane magnetization between TbFeCo amorphous films with strong perpendicular anisotropy and high coercivity. The effect of the NdCo thickness on the magnetic and magneto-optical properties of the trilayer medium was investigated systematically. The distribution of the magnetization direction in a trilayer NdCo amorphous alloy film was calculated to manifest the reorientation of the magnetization inside the NdCo layer through magnetic exchange coupling.
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