宽温环境下磁光盘瞬态温度场的研究

Analysis of instantaneous temperature distribution in magneto-optical films at different ambient temperatures

本文利用有限单元法,在宽温环境(-20℃～+88℃)下,对层状膜结构磁光盘的瞬态温度场进行了模拟,着重分析了环境温度对磁光盘温度场的影响,研究了不同环境温度下磁光盘记录灵敏度同记录光脉冲宽度的关系,为进一步研究宽温环境下磁光盘的热磁记录和磁光读出特性提供了分析手段。

With finite- element method, numerical calculations of instantaneous temperature distribution in layered magneto-optical (MO) films are given. In the analysis, the emphasis is put on the ambient temperature dependence of temperature profile in layered structure, and the pulse duration dependence of minimun writing power is found at various ambient temperatures. The analysis presents an useful means to further study the characteristics of thermomagnetic recording and magneto-optical readout of MO disks used at different ambient temperatures.