THICKNESS DEPENDENCE OF THE MAGNETIZATION AND THE CURIE-TEMPERATURE OF FERROMAGNETIC THIN-FILMS

被引：46
|
作者：
JENSEN, PJ [1 ]
DREYSSE, H [1 ]
BENNEMANN, KH [1 ]
机构：
[1] LAB PHYS SOLIDE, F-54506 VANDOEUVRE NANCY, FRANCE
来源：
SURFACE SCIENCE | 1992年 / 269卷
关键词：
D O I：
10.1016/0039-6028(92)91322-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The magnetic properties of thin ferromagnetic films are studied using a mean-field model. The thickness dependent film Curie temperature T(c)(d) is calculated for different surface magnetic moments mu(s) as well as for different lattice types and -faces. For an enhanced mu(s) the bulk Curie temperature T(c)(infinity) can be reached within a few layers or may even be exceeded. The layer dependent magnetization curves m(i)(T) are calculated for a few systems, assuming Ising as well as Heisenberg type spins. Thermal fluctuations are partly taken into account by an improved mean field theory. The main features of our results seem to be presented in the presence of fluctuations.
引用
收藏
页码：627 / 631
页数：5
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