Pseudo spin valves based on L1(0) (111)-oriented FePt and FePtCu fixed layer with tilted anisotropy
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)
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
IdentifiersURN: urn:nbn:se:kth:diva-39667DOI: 10.1088/1742-6596/200/5/052036ISI: 000291321302080ScopusID: 2-s2.0-77957028473OAI: oai:DiVA.org:kth-39667DiVA: diva2:440202
International Conference on Magnetism (ICM 2009). Karlsruhe, GERMANY. JUL 26-31, 2009