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Pseudo spin valves based on L1(0) (111)-oriented FePt and FePtCu fixed layer with tilted anisotropy
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
KTH, School of Information and Communication Technology (ICT), Material Physics, Material Physics, MF.
2010 (English)In: INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) / [ed] Goll, G; Lohneysen, HV; Loidl, A; Pruschke, T; Richter, M; Schultz, L; Surgers, C; Wosnitza, J, BRISTOL: IOP PUBLISHING LTD , 2010, Vol. 200, UNSP 052036- p.Conference paper (Refereed)
Abstract [en]

We demonstrate a series of pseudo-spin-valve structures based on L1(0) (111)-oriented FePt and FePtCu with titled magnetocrystalline anisotropy. Highly ordered (111)-oriented L1(0) FePtCu with large anisotropy is achieved by optimizing the Cu content. Magnetoresistance (MR) up to 5% has been obtained by i) optimizing the fixed-layer growth using different underlayers, ii) enhancing the interface spin polarization using thin CoFe at the Cu interfaces, and iii) adjusting the Cu spacer thickness. The substantial MR realized with tilted fixed layer magnetization is an important prerequisite for the realization of tilted polarizer Spin Torque Oscillators (STO) or Spin-Transfer Torque Magnetoresistive Random Access Memories (STT-MRAM).

Place, publisher, year, edition, pages
BRISTOL: IOP PUBLISHING LTD , 2010. Vol. 200, UNSP 052036- p.
, Journal of Physics Conference Series, ISSN 1742-6588 ; 200
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-39667DOI: 10.1088/1742-6596/200/5/052036ISI: 000291321302080ScopusID: 2-s2.0-77957028473OAI: diva2:440202
International Conference on Magnetism (ICM 2009). Karlsruhe, GERMANY. JUL 26-31, 2009
Available from: 2011-09-12 Created: 2011-09-12 Last updated: 2011-09-12Bibliographically approved

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Zha, ChaolinÅkerman, Johan
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