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Detail
Journal Article
Influence of the Nano-oxide Layer Position on Magnetoresistance Ratio and Magnetic Properties in Spin Valves
- Authors
- Jeong Dae Suh, C. A. Ross
- Issue Date
- 2007-12
- Citation
- Physica Status Solidi (B), v.244 no.12, pp.4474-4477
- ISSN
- 0370-1972
- Publisher
- Wiley-VCH Verlag GmbH
- Language
- English
- Type
- Journal Article
- Project Code
- 08MC1600, High performance bio-sensor system using nano-particles, Chung Myung-Ae
- Abstract
- We have investigated the influence of nano-oxide layer position on magnetoresistance of the NiFe/Cu/Co/Cu spin valves. We found that the giant magnetoresistance (GMR) ratio, magnetic coercivity and surface roughness were strongly dependent on the nano-oxide layer positions. For nano-oxide layer positions from the bottom to top part of spin valve, the GMR ratio varied from 2.8 % to 0.15 % depending on the position of the nano-oxide layer within the spin valves. It was also found that the nano- oxide layer(NOL) position affect the surface roughness and magnetic coercivity significantly. Variation of the GMR ratio with nano-oxide layer position can be explained well by the variation of the spin electron transport confinement due to the specular reflection effect of the nano-oxide layer. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.
- KSP Keywords
- Co. KGaA, Electron Transport, Giant magnetoresistance(GMR), Magnetoresistance ratio, Nano-oxide layer, Spin valve, Spin valves, Surface roughness, magnetic coercivity, magnetic properties, specular reflection