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arXiv · 0911.4192

Pseudo Spin Valves Using a (112)-textured DO_22 MnGa Fixed Layer

C. L. Zha·R. K. Dumas·J. Persson·S. M. Mohseni·J. Nogués·Johan Åkerman
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Abstract

We demonstrate pseudo spin valves with a (112)-textured DO_22 MnGa (MnGa) tilted magnetization fixed layer and an in-plane CoFe free layer. Single D0_22 MnGa films exhibit a small magnetoresistance (MR) typically observed in metals. In MnGa/Cu/ CoFe spin valves a transition from a negative (-0.08%) to positive (3.88%) MR is realized by introducing a thin spin polarizing CoFe insertion layer at the MnGa/Cu interface and tailoring the MnGa thickness. Finally, the exchange coupling between the MnGa and CoFe insertion layer is studied using a first-order reversal curve (FORC) technique.

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C. L. Zha, R. K. Dumas, J. Persson, S. M. Mohseni, J. Nogués, Johan Åkerman. 2009-11-23. Pseudo Spin Valves Using a (112)-textured DO_22 MnGa Fixed Layer. https://doi.org/10.1109/lmag.2009.2039774

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