WEAK ANTIFERROMAGNETIC COUPLING IN SPUTTERED NICO/CU MULTILAYERS

被引：4

作者：

BIAN, X

GAULIN, BD

STROMOLSEN, JO

ALTOUNIAN, Z

STAGER, CV

AVELAR, JA

机构：

[1] MCGILL UNIV, DEPT PHYS, MONTREAL H3A 2T8, QUEBEC, CANADA

[2] MCMASTER UNIV, DEPT PHYS & ASTRON, HAMILTON L8S 4M1, ONTARIO, CANADA

[3] MCMASTER UNIV, MCMASTER NUCL REACTOR, HAMILTON L8S 4M1, ONTARIO, CANADA

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.50.3114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Small-angle neutron scattering has been used to study the magnetic ordering of Ni80Co20/Cu multilayers, a system which exhibits giant magnetoresistance. This system was selected for study because of its near-zero magnetic anisotropy, so that the exchange coupling may be determined with minimal interference from anisotropic effects. For a Cu thickness around 20 angstrom, clear antiferromagnetic order is seen, which may be suppressed by an external field of only 160 Oe. Combining the neutron data with magnetization data yields a value of 5.8 x 10(-3) erg/cm2 for the exchange coupling, considerably less than values quoted hitherto for Cu/transition-metal multilayers.

引用

页码：3114 / 3119

页数：6