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Pseudo Spin Valves Using a (1 1 2)-Textured D0 _{22} Mn _{2.3-2.4} Ga Fixed Layer

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6 Author(s)
Zha, C.L. ; Mater. Phys. Div., R. Inst. of Technol. (KTH), Kista, Sweden ; Dumas, R.K. ; Persson, J. ; Mohseni, S.M.
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We demonstrate pseudo spin valves (PSVs) with a (112)-textured D022 Mn2.3-2.4Ga (MnGa) tilted magnetization fixed layer and an in-plane CoFe free layer. Single D022 MnGa films exhibit a small magnetoresistance (MR) typically observed in metals. In MnGa/Cu/CoFe PSVs, 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 technique.

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Magnetics Letters, IEEE  (Volume:1 )