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Blocking effect of Mn diffusion in NiFe/FeMn/NiFe multilayers
- Issue Date
- May-2004
- Publisher
- ELSEVIER
- Keywords
- blocking effect; mn diffusion; exchange biasing field; annealing; Mn; Cr
- Citation
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.272, pp 1272 - 1273
- Pages
- 2
- Journal Title
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
- Volume
- 272
- Start Page
- 1272
- End Page
- 1273
- ISSN
- 0304-8853
1873-4766
- Abstract
- The blocking effect of Mn diffusion in NiFe/(Mn,Cr)/FeMn/(Mn,Cr)/NiFe multilayer was investigated. The exchange biasing field (H-ex) was maintained up to the inserted Mn thickness of 1.5 nm, while the H-ex of the inserted Cr sample disappeared at 0.5 nm. To protect the interdiffusion of Mn atoms between FeMn and NiFe layers during the annealing process, an ultrathin Cr layer of 0.1 nm was inserted at the interfaces. The H-ex of the 0.1 nm Cr sample was stabilized up to 400degreesC and the coercive field (H-c) reduced to 40 percent. (C) 2004 Elsevier B.V. All rights reserved.
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