Magnetization reversal in CoPt(111) hard/soft bilayers

被引：16

作者：

Alexandrakis, V. ^{[1
]}

Niarchos, D. ^{[1
]}

Wolff, M. ^{[2
]}

Panagiotopoulos, I. ^{[3
]}

机构：

[1] NCSR Demokritos, IMS, Athens 15310, Greece

[2] Ruhr Univ Bochum, Inst Solid State Phys, EP 4, D-44780 Bochum, Germany

[3] Univ Ioannina, Dept Mat Sci & Engn, GR-45110 Ioannina, Greece

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 06期

关键词：

cobalt alloys; coherence length; magnetic anisotropy; magnetic domains; magnetisation reversal; platinum alloys; sputtered coatings; PERMANENT-MAGNETS; EXCHANGE; HETEROSTRUCTURES; OPTIMIZATION; MEDIA; FILMS;

D O I：

10.1063/1.3093936

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetization reversal in magnetron sputtered CoPt(111) hard/soft bilayers has been studied by polarized neutron reflectometry and magnetization measurements. The stability of the hard layer is tuned by the heat-treatment conditions which are used to crystallize the chemically ordered, high anisotropy, L(1)0 phase. All the samples show the same features in their first order reversal curves but the lateral domain size during the magnetization reversal of the soft layer differs. In samples with strong intergrain coupling it exceeds the coherence length of the neutron beam, resulting in spin-flip scattering. In contrast, the hard layer reversal occurs through the reorientation in small domains.

引用

页数：6

共 26 条

[1] Magnetization reversal in CoPt-based hard-soft homocomposites [J].