Exchange-coupling effects in perpendicular composite materials

被引：18

作者：

Schuermann, K. C. ^{[1
]}

Dutson, J. D.

Wu, S. Z.

Harkness, S. D.

Valcu, B.

Richter, H. -J.

Chantrell, R. W.

O'Grady, K.

机构：

[1] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[2] Seagate Technol, Recording Media Operat, Fremont, CA 94538 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 08期

关键词：

D O I：

10.1063/1.2165920

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of interlayer thickness on the magnetic properties of exchange-coupled composite media has been studied. Films consisting of a CoPtO hard magnetic layer and a CoCrPt soft layer separated by a Pt interlayer with a thickness varying from 0 to 40 angstrom have been fabricated. At low Pt thicknesses (<= 16 angstrom) the exchange coupling forces the layers to switch as a single unit with a reduction in the hard magnetic layer coercivity of >2.5 kOe. Thicker Pt layers induce sufficient decoupling to permit each layer to reverse separately. The variation of the coercivity with Pt thickness is complex and suggests that the coupling between the layers is a combination of dipolar and exchange effects. (C) 2006 American Institute of Physics.

引用

页数：3

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