NUMERICAL-SIMULATION OF THERMOMAGNETIC WRITING IN RE-TM FILMS

被引：18

作者：

MCDANIEL, TW ^{[1
]}

MANSURIPUR, M ^{[1
]}

机构：

[1] BOSTON UNIV,BOSTON,MA 02215

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1987年 / 23卷 / 05期

关键词：

MAGNETOOPTICAL DEVICES - Computer Simulation;

D O I：

10.1109/TMAG.1987.1065408

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have developed a simplified micromagnetics simulation of the behavior of RE-TM films that produces an equilibrium configuration of film magnetization for a specified thermal profile and applied magnetic field. This Monte Carlo-type model is useful for assessing the size, shape, and stability of written marks in MO recording. In addition, the simulation provides estimates of the minimum field strength required for nucleation and growth of reversed domains, and hence it predicts film coercivity at any temperature. An equilibrium state is determined by magnetic energy minimization. Magnetization dynamics are not incorporated into the model, but instead, a quasi-static approach to equilibrium is simulated. Spatial resolution can be arbitrarily small, and discretization down to about 20 nm can be reasonably accommodated. Readout of written domains has been incorporated as an additional feature of this model.

引用

页码：2943 / 2945

页数：3

共 4 条

[1] MAGNETIZATION REVERSAL, COERCIVITY, AND THE PROCESS OF THERMOMAGNETIC RECORDING IN THIN-FILMS OF AMORPHOUS RARE-EARTH TRANSITION-METAL ALLOYS [J].