| 摘要 |
PURPOSE:To obtain the material for photomagnetic recording having excellent corrosion resisting property by a method wherein an alloy of the prescribed composition, consisting of one or two kinds R of Gd, Tb and Dy, M of Al and Co and Fe, is used. CONSTITUTION:In an Fe-R-M alloy, R has 20-35atm% of the total quantity, and Al and Co have 3-20atm% of the total quantity of Fe+M. When the alloy 2 of the above-mentioned composition is used, the corrosion resistance of the titled material is remarkably improved mainly due to the action of Al, the stability of recording is improved, and the repeatability of writing-in and eration can also be increased remarkably. Also, the material alloy of this constitution has the property which is suited for a high density recording, Kerr rotational angle is increased by containing Co, and the reproduction SN ratio is increased. |
