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Proceedings Paper

Spin-dependent scattering in CoFe/Cu/NiFe spin valve trilayers
Author(s): Chong Yan; Jun Yu; Yun-bo Wang; Wen-li Zhou; Ji-fan Xie; Jun-xiong Gao; Dong-xiang Zhou
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Paper Abstract

Using the radio frequency magnetron sputtering approach to prepare CoFe/Cu/NiFe spin valve tri-layered films, we study the substrate temperature, CoFe insertion layer and NiFe insertion layer effect on the giant magnetoresistance. It is found that the magnetoresistance descends when the substrate temperature ascends. It is attributed that the interfacial spin-dependent scattering weakens because the diffusion at the interface strengthens at higher substrate temperature. The magnetoresistance increases when the spin valves are inserted by CoFe layers in Cu/NiFe interfaces and the magnetoresistance decreases when the spin valves are inserted by NiFe layer in CoFe/Cu interfaces. This implies that a smooth and continuous interface is more easily obtained in CoFe/Cu than in NiFe/Cu interface. Smooth interfaces strengthen the interfacial spin-dependent scattering that increase the giant magnetoresistance.

Paper Details

Date Published: 14 September 2001
PDF: 4 pages
Proc. SPIE 4414, International Conference on Sensor Technology (ISTC 2001), (14 September 2001); doi: 10.1117/12.440240
Show Author Affiliations
Chong Yan, Huazhong Univ. of Science and Technology (China)
Jun Yu, Huazhong Univ. of Science and Technology (China)
Yun-bo Wang, Huazhong Univ. of Science and Technology (China)
Wen-li Zhou, Huazhong Univ. of Science and Technology (China)
Ji-fan Xie, Huazhong Univ. of Science and Technology (China)
Jun-xiong Gao, Huazhong Univ. of Science and Technology (China)
Dong-xiang Zhou, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 4414:
International Conference on Sensor Technology (ISTC 2001)

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