Characterization of the magnetic modification of Co/Pt multilayer films by He+, Ar+, and Ga+ ion irradiation

被引：106

作者：

Rettner, CT ^{[1
]}

Anders, S ^{[1
]}

Baglin, JEE ^{[1
]}

Thomson, T ^{[1
]}

Terris, BD ^{[1
]}

机构：

[1] IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 02期

关键词：

D O I：

10.1063/1.1432108

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Co/Pt multilayers can exhibit large perpendicular anisotropies and coercivities that are very sensitive to the quality of the Co/Pt interfaces. We have characterized the dependence of coercivity of Co/Pt multilayers on irradiation with various ion species (He+, Ar+, and Ga+), energies (20 keV-2 MeV), and doses (10(11)-10(17) ions/cm(2)), in order to understand better the nature of the structural changes responsible for the magnetic changes. We find that, in general, the system is much more sensitive to irradiation than expected on the basis of a nearest-neighbor coupling model and simple ballistic ion-beam mixing. (C) 2002 American Institute of Physics.

引用

页码：279 / 281

页数：3

共 25 条

[1] Magnetization reversal in arrays of perpendicularly magnetized ultrathin dots coupled by dipolar interaction [J].