Exchange bias in (Pt/Co0.9Fe0.1)n/FeMn multilayers with perpendicular magnetic anisotropy

被引：70

作者：

Garcia, F ^{[1
]}

Casali, G ^{[1
]}

Auffret, S ^{[1
]}

Rodmacq, B ^{[1
]}

Dieny, B ^{[1
]}

机构：

[1] CEA Grenoble, SPINTEC, SP2M, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble 9, France

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 10期

关键词：

D O I：

10.1063/1.1447870

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the observation of exchange bias in (Pt/Co0.90Fe0.10)(n)/FeMn multilayers, with perpendicular magnetic anisotropy. We analyze the behavior of the exchange-bias field H-eb as a function of temperature, FeMn thickness, number of (Pt/Co0.90Fe0.10) bilayers, and annealing conditions. Measurements carried out with field applied perpendicular to the plane of the samples indicate that the hysteresis loops present 100% of remanent magnetization, with H-eb reaching 200 Oe and a tunable coercive field, depending on Co and Pt thickness ratio and on Pt buffer thickness. Furthermore, spin-valves of the form (Pt/Co0.90Fe0.10)(n)/NM/(Co0.90Fe0.10/Pt)(m)/Co0.90Fe0.10/FeMn with NM=Cu or Pt have been prepared. They exhibit two well separated hysteresis loops when the field is applied perpendicular to the plane. (C) 2002 American Institute of Physics.

引用

页码：6905 / 6907

页数：3

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