Pseudo spin valves based on L10 (111)-oriented FePt fixed layers with tilted anisotropy
2009 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 94, no 16, 163108- p.Article in journal (Refereed) Published
We demonstrate magnetoresistance (MR) in excess of 4% in FePt/CoFe/Cu/CoFe/NiFe pseudo spin valves based on L10 (111)-oriented FePt fixed layers with a 36 degrees out-of-plane tilted magnetization. The high MR is achieved by increasing the spin polarization at the Cu interfaces, using thin CoFe, and optimizing the FePt growth and Cu interface quality using Ta and Ta/Pt underlayers. We observe well-separated switching of the FePt/CoFe fixed layer and the CoFe/NiFe free layer, suggesting that CoFe is rigidly exchange coupled to FePt and NiFe in the respective layers.
Place, publisher, year, edition, pages
2009. Vol. 94, no 16, 163108- p.
cobalt alloys, copper, exchange interactions (electron), giant, magnetoresistance, iron alloys, magnetic anisotropy, magnetic, multilayers, magnetic switching, magnetisation, nickel alloys, platinum, alloys, spin polarised transport, spin valves, high areal density, films
IdentifiersURN: urn:nbn:se:kth:diva-18394DOI: 10.1063/1.3123003ISI: 000265823300063ScopusID: 2-s2.0-65449120703OAI: oai:DiVA.org:kth-18394DiVA: diva2:336441
QC 20100525 QC 201203212010-08-052010-08-052012-03-21Bibliographically approved