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Pseudo spin valves using a (112)-Textured D022 Mn2.3-2.4Ga fixed layer
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101).
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101).
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101).
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101).
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2010 (English)In: IEEE Magnetics Letters, ISSN 1949-307X, E-ISSN 1949-3088, Vol. 1, 2500104- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2010. Vol. 1, 2500104- p.
Keyword [en]
D022MnGa, first-order reversal curve (FORC), Magneto-electronics, negative magnetoresistance, spin valves, tilted polarizer
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Identifiers
URN: urn:nbn:se:kth:diva-150055DOI: 10.1109/LMAG.2009.2039774ISI: 000208910200006Scopus ID: 2-s2.0-78650400958OAI: oai:DiVA.org:kth-150055DiVA: diva2:744461
Funder
Swedish Foundation for Strategic Research Swedish Research CouncilKnut and Alice Wallenberg FoundationWenner-Gren Foundations
Note

QC 20140908

Available from: 2014-09-08 Created: 2014-08-29 Last updated: 2017-12-05Bibliographically approved

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Zha, ChaolinDumas, Randy K.Persson, JohanMohseni, Seyed MajidNogues, JosepÅkerman, Johan
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