稀土——过渡族金属非晶态磁光材料信号读出特性研究

Reading Characteristics of Amorphous Magneto-Optic Media of Rare Earth-Transition Metal Elements

在计算RE-TM饱和磁化强度和温度关系曲线的基础上,本文建立了一种适用于计算磁光光盘读出信号质量与读出激光功率关系的方法,对经优化的四层膜结构实例给出了最佳读出激光功率,并讨论了稀土含量变化时,对最佳读出激光功率和信噪比的影响,结果与有关的实验规律相吻合。

On the basis of calculating the relation of saturated magnetization of amorphous magneto-optic media of rare earth-transition metal elements with temperature, a new method suitable for calculating the relation of the reading quality of magneto-optie disks to the reading laser power has been established. For the practical example of the quadrilayer, the optimum reading laser power is obtained. The optimum reading laser power and the signal to noise ratio influenced by the variation of the content of rare earth elements have also been studied. The results agree with related experiments.