Annealing cycle number dependence of magnetoresistance in alloy NiMn-pinned spin valves

Authors
Rhee, JR Lee, NI Yi, JH Lee, GY Kim, MY Lee, SS Hwang, DG Park, CM
Citation
Jr. Rhee et al., Annealing cycle number dependence of magnetoresistance in alloy NiMn-pinned spin valves, J MAGN MAGN, 226, 2001, pp. 664-665
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
226
Year of publication
2001
Part
1
Pages
664 - 665
Database
ISI
SICI code
0304-8853(200105)226:<664:ACNDOM>2.0.ZU;2-G
Abstract
NiMn-pinned spin valve films with the stacks of Glass/NiFe/Co/Cu/Co/NiFe/Ni Mn/Ta were made by DC magnetron sputtering and the annealing cycle number d ependence of magnetoresistance in the films was investigated. By optimizing the process of deposition and post thermal annealing cycle, we obtained th e NiMn-spin valve films with MR ratio of 2.5%. exchange coupling field of 6 20 Oe, and coercivity of 250 Oe for the pinned layer. The exchange coupling field maintained its strength in operation up to 175 degreesC and decrease d monotonically to zero at 380 degreesC. (C) 2001 Elsevier Science B.V. All rights reserved.