摘要
以激光照射下ＴｂＦｅＣｏ四层结构为例，通过体积功率函数ｇ的纵向分布，分析了ＭＯ盘片各层的光能吸收情况．借助有限元方法对热扩散方程进行数值运算，给出了多层膜膜体温度的时空分布，分析了各层中的热扩散情况．通过对影响热磁记录的激光功率、激光照射时间和表面热流速率γ等因素的研究，给出了适合研究体系的激光功率、激光照射时间和表面热流速率．旨在通过ＴｂＦｅＣｏ这一特例的热学分析，为其它的光盘（如ＤＶＤＲＯＭ）的热学研究提供借鉴．
Abstract For a TbFeCo quadrilayer illuminated by laser
beam,absorption of the laser power within different layers was considered by analysizing the rate
of absorption of energy per unit volume.With the help of implicit method,the profile of temperature
of the multilayer was given and the diffusion of heat was studied.The effect of laser power,laser
duration and the convection loss at the front surface upon the thermal characteristics of the
multilayer was investigated.This thermal analysis procedure provided a good example for the
thermal investigation within other optical disk systems.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第4期620-627,共8页
Acta Physica Sinica
