Influence of external magnetic fields on the growth of alloy nanoclusters

被引：12
|
作者：
Einax, M. [1 ]
Heinrichs, S.
Maass, P.
Majhofer, A.
Dieterich, W.
机构：
[1] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany
[2] Tech Univ Ilmenau, Inst Phys, D-98684 Ilmenau, Germany
[3] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 08期
关键词：
D O I：
10.1088/0953-8984/19/8/086227
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Kinetic Monte Carlo simulations are performed to study the influence of external magnetic fields on the growth of magnetic fcc binary alloy nanoclusters with perpendicular magnetic anisotropy. A model of the underlying kinetics is designed to describe the essential structural and magnetic properties of CoPt3-type clusters grown on a weakly interacting substrate through molecular beam epitaxy. The results suggest that perpendicular magnetic anisotropy can be enhanced when the field is applied during growth. For equilibrium bulk systems a significant shift of the onset temperature for L1(2) ordering is found, in agreement with predictions from Landau theory. Stronger field-induced effects can be expected for magnetic fcc alloys undergoing L1(0) ordering.
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页数：8
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