Effects of Various Sub-Monolayers on the Properties of Spin Valves with a Co90Fe10 Free Layer

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概要

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• A sub-monolayer of Co90Fe10, Ni80Fe20, Ta, Cu or Ru was investigated for a spin valve having a Co90Fe10 free layer. The sub-monolayers of Co90Fe10, Ni80Fe20, Cu and Ta did not significantly improve the giant magnetoresistance of the spin valve, probably because the spin-dependent scattering due to localized potentials at the Fe impurity in a Co free layer, rather than scattering at the other impurities, dominates the spin valve's magnetoresistance response. As a result of this dominance, the effect of such a sub-monolayer cannot be pronounced. However, since there was some improvement in all but one case, the results clearly confirm that such a layer can play a role as a spin-dependent scatterer. In the case of Ru, the sub-monolayer greatly decreased the giant magnetoresistance value, and this is direct evidence that Ru is indeed a suppressor of bulk spin-dependent scattering.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-12-15

著者

• Kanai Hitoshi

  Magnetic Component Division Fujitsu Limited

• Hong Jongill

  Ceramic Engineering Advanced Materials Engineering Yonsei University

• Hong Jongill

  Ceramic Engineering, Division of Advanced New Materials, Yonsei University, 134 Shinchon, Seodaemun, Seoul 120-749, Korea

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• Effects of Various Sub-Monolayers on the Properties of Spin Valves with a Co90Fe10 Free Layer

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