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Title: Suppression of interlayer coupling and enhancement of magnetoresistant in spin valves with oxide layer
Authors: Li, K.
Wu, Y. 
Qiu, J.
Han, G.
Guo, Z.
Xie, H.
Chong, T. 
Issue Date: 26-Nov-2001
Citation: Li, K., Wu, Y., Qiu, J., Han, G., Guo, Z., Xie, H., Chong, T. (2001-11-26). Suppression of interlayer coupling and enhancement of magnetoresistant in spin valves with oxide layer. Applied Physics Letters 79 (22) : 3663-3665. ScholarBank@NUS Repository.
Abstract: The interlayer coupling field (Hint) between the free and pinned ferromagnetic (FM) layers in an exchange-biased spin valve deposited by magnetron sputtering is usually dominated by the Néel "orange peel" coupling. The orange peel coupling is suppressed dramatically when an oxide layer (OXL) is inserted into the free/pinned FM layers due to smoother surface roughness at the interface. Hint decreases with increasing oxygen exposure dose of the free/pinned FM layers to pure O2 gas. And it is found that Ruderman-Kittel-Kasuya-Yoshida exchange coupling dominates in OXL spin valves due to smoother surface roughness and enhanced specular electron scattering at the interface between OXL and pinned/free FM layers, which also results in enhancement of magnetoresistance effect. © 2001 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.1421228
Appears in Collections:Staff Publications

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