对磁光薄膜进行热磁模拟可以了解影响热磁记录过程的各种因素及这些因素间的相互关系以及它们对写入信息的影响。采用近似计算方法对 Bi、Al替 Dy IG磁光薄膜进行静态热磁模拟 ,得出在居里点写入的情况下写入点半径与写入功率、数值孔...对磁光薄膜进行热磁模拟可以了解影响热磁记录过程的各种因素及这些因素间的相互关系以及它们对写入信息的影响。采用近似计算方法对 Bi、Al替 Dy IG磁光薄膜进行静态热磁模拟 ,得出在居里点写入的情况下写入点半径与写入功率、数值孔径、材料的反射率、材料的热导率及激光波长的关系。该方法为热磁写入过程提供了一种简捷的理论指导。展开更多
A series of three-dimensional numerical computations were conducted to understand the effects of different static magnetic fields on thermal fluctuation and melt flow during the detached solidification of CdZnTe. Nume...A series of three-dimensional numerical computations were conducted to understand the effects of different static magnetic fields on thermal fluctuation and melt flow during the detached solidification of CdZnTe. Numerical calculations were carried out by three different configurations of magnetic field: without magnetic field, with an axial magnetic field (AMF) and with a cusp-shaped magnetic field (CMF). The results reveal that the magnetic fields can effectively suppress the melt flow and thermal fluctuation and the suppression effect of the AMF is stronger than that of the CMF. Besides, the physical mechanism of thermocapillary?buoyancy convection instability was discussed and the effects of magnetic field on the critical Marangoni number were also obtained.展开更多
文摘对磁光薄膜进行热磁模拟可以了解影响热磁记录过程的各种因素及这些因素间的相互关系以及它们对写入信息的影响。采用近似计算方法对 Bi、Al替 Dy IG磁光薄膜进行静态热磁模拟 ,得出在居里点写入的情况下写入点半径与写入功率、数值孔径、材料的反射率、材料的热导率及激光波长的关系。该方法为热磁写入过程提供了一种简捷的理论指导。
基金Project(51276203)supported by the National Natural Science Foundation of China
文摘A series of three-dimensional numerical computations were conducted to understand the effects of different static magnetic fields on thermal fluctuation and melt flow during the detached solidification of CdZnTe. Numerical calculations were carried out by three different configurations of magnetic field: without magnetic field, with an axial magnetic field (AMF) and with a cusp-shaped magnetic field (CMF). The results reveal that the magnetic fields can effectively suppress the melt flow and thermal fluctuation and the suppression effect of the AMF is stronger than that of the CMF. Besides, the physical mechanism of thermocapillary?buoyancy convection instability was discussed and the effects of magnetic field on the critical Marangoni number were also obtained.
