非晶稀土-过渡金属磁光薄膜热稳定性研究

Thermal Stability of Amorphous RE-TM Magneto-optical Films

采用射频磁控溅射方法制备非晶 Dy Fe Co磁光薄膜。样品的克尔回线、转矩曲线的测试显示 ,薄膜具有优良的磁和磁光性能。退火研究表明 ,随着退火时间的增加 ,矫顽力下降 ,垂直磁各向异性能减少 ,但克尔角变化不明显 ,其内在机制与薄膜中的微缺陷和应力的弛豫过程有关。

The amorphous DyFeCo films were prepared by rf magnetron sputtering.The measurements of Kerr loops and torque curve showed that the films was suitable for magneto optical recording.Furthermore,annealing studies revealed that the coercivity was decreasing but Kerr angle change was not obvious during thermal annealing.This result was attributed to the structural relaxation and stress relaxation.