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Comparison of magneto resistance in spin valve films with Ni/Mn and Pt/Mn superlattice
- Issue Date
- Feb-2002
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- superlattice-based spin valves; antiferromagnetic phase; exchange coupling field
- Citation
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.239, no.1-3, pp 210 - 212
- Pages
- 3
- Journal Title
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
- Volume
- 239
- Number
- 1-3
- Start Page
- 210
- End Page
- 212
- ISSN
- 0304-8853
1873-4766
- Abstract
- We have shown that it is possible to make Ni/Mn superlattice-based spin valves that have high thermal stabilities. Ni/ Mn superlattice was compared with Pt/Mn. The Ni/Mn superlattice after a thermal treatment at 240degreesC showed an FCT structure with the antiferromagetic phase.. The exchange coupling field (H-ex) and the coercive field (H-c) of [Ni(2 Angstrom)/ Mn(3 Angstrom)](40)/NiFe(60 Angstrom)/Cu(30 Angstrom)/NiFe(60 Angstrom) spin valves with 30 at% Ni [Ni/Mn] superlattice as the pinning layer are 305 and 245 Oe after thermal annealing for 12 h at 240degreesC, respectively. As-deposited Pt/Mn superlattice spin valves showed uniaxial anisotropy and exchange biasing without deposition field and post-annealing. (C) 2002 Elsevier Science B.V. All rights reserved.
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