Light-induced magnetization reversal of high-anisotropy TbCo alloy films

被引：169

作者：

Alebrand, Sabine ^{[2
,3
]}

Gottwald, Matthias ^{[1
,4
]}

Hehn, Michel ^{[1
]}

Steil, Daniel ^{[2
,3
]}

Cinchetti, Mirko ^{[2
,3
]}

Lacour, Daniel ^{[1
]}

Fullerton, Eric E. ^{[4
]}

Aeschlimann, Martin ^{[2
,3
]}

Mangin, Stephane ^{[1
]}

机构：

[1] Univ Lorraine, UMR CNRS 7198, Inst Jean Lamour, F-54505 Vandoeuvre Les Nancy, France

[2] Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany

[3] Univ Kaiserslautern, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany

[4] Univ Calif San Diego, Ctr Magnet Recording Res, San Diego, CA 92093 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 16期

关键词：

Optical switches - Terbium alloys - Alloying - Cobalt alloys - Digital storage - Magnetic storage - Anisotropy - Binary alloys;

D O I：

10.1063/1.4759109

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetization reversal using circularly polarized light provides a way to control magnetization without any external magnetic field and has the potential to revolutionize magnetic data storage. However, in order to reach ultra-high density data storage, high anisotropy media providing thermal stability are needed. Here, we evidence all-optical magnetization switching for different TbxCo1-x ferrimagnetic alloy compositions using fs- and ps-laser pulses and demonstrate all-optical switching for films with anisotropy fields reaching 6 T corresponding to anisotropy constants of 3 x 10(6) ergs/cm(3). Optical magnetization switching is observed only for alloy compositions where the compensation temperature can be reached through sample heating. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4759109]

引用

页数：4

共 18 条

[1] Interplay of heating and helicity in all-optical magnetization switching [J].