Ga+ ion irradiation-induced changes in magnetic anisotropy of a Pt/Co/Pt thin film studied by X-ray magnetic circular dichroism

被引：1

作者：

Amemiya, K. ^{[1
]}

Sakamaki, M. ^{[1
]}

Mazalski, P.

Sveklo, I.

Kurant, Z.

Maziewski, A.

Liedke, M. O.

Fassbender, J.

Wawro, A.

Baczewski, L. T.

机构：

[1] High Energy Accelerator Res Org, Inst Mat Struct Sci, Photon Factory & Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, Japan

来源：

JEMS 2012 - JOINT EUROPEAN MAGNETIC SYMPOSIA | 2012年 / 40卷

关键词：

CO/PT MULTILAYERS; ORBITAL-MOMENT;

D O I：

10.1051/epjconf/20134008002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ga+ ion irradiation-induced changes in magnetic anisotropy of a Pt/Co/Pt ultrathin film are investigated by means of the X-ray magnetic circular dichroism (XMCD) technique. A large difference in the Co orbital moment is observed between out-of-plane and in-plane directions of the film at moderate Ga+ fluences of similar to 1-2x10(14) ions/cm(2), which corresponds to the perpendicular magnetic anisotropy (PMA), while further increased fluences reduce the orbital moment difference, resulting in in-plane magnetization. In contrast, at much higher Ga+ fluences of similar to 5x10(15) ions/cm(2), at which PMA is observed again, no significant difference is found in the orbital moment of Co between out-of-plane and in-plane directions. Different origins are thus suggested for the appearance of PMA induced by the irradiation between moderate and high Ga+ fluences.

引用

页数：3

共 18 条

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