Effects of ion irradiation on epitaxial Cu/Ni/Cu(001) with perpendicular magnetic anisotropy

被引：14

作者：

Kim, TG

Shin, YH

Song, JH

Sung, MC

Kim, IS

You, DG

Lee, J

Jeong, K

Jeon, GY

Whang, CN

机构：

[1] Korea Inst Sci & Technol, Adv Anal Ctr, Seoul 130650, South Korea

[2] Yonsei Univ, Atom Scale Surface Sci Res Ctr, Seoul 120749, South Korea

[3] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 21期

关键词：

D O I：

10.1063/1.1515877

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Epitaxial fcc Cu/Ni(t)/Cu(001) structures (t=20,30,60,90 Angstrom) possessing perpendicular magnetic anisotropy were irradiated by 1 MeV C+ with a dose of 2x10(16) ions/cm(2). The spin reorientation transitions from perpendicular to in-plane magnetization occurred after ion irradiation. X-ray diffraction measurements showed that the crystal structures were conserved, the grain sizes of Cu in the Cu/Ni(60, 90 Angstrom)/Cu(001) films increased by 38%, and the strain in the Ni layer was relaxed after irradiation when compared to the as-deposited samples. It is concluded that the spin reorientation transition is caused by the relaxation of the strain in Ni layer, which is initiated by ion irradiation. (C) 2002 American Institute of Physics.

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页码：4017 / 4019

页数：3

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