We acknowledge financial support by the Franco-Spanish PICASSO PAI program, the E.U. FP6 STREP “Nanotemplates”, Contract No. NMPA4-2004-505955 and the CICyT of the Spanish government (project MAT2002-04551-cO3, MAT2005-05656, and NAN2004-9094).
NiFe2O4: A Versatile Spinel Material Brings New Opportunities for Spintronics†
Article first published online: 8 JUN 2006
Copyright © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 18, Issue 13, pages 1733–1736, July, 2006
How to Cite
Lüders, U., Barthélémy, A., Bibes, M., Bouzehouane, K., Fusil, S., Jacquet, E., Contour, J.-P., Bobo, J.-F., Fontcuberta, J. and Fert, A. (2006), NiFe2O4: A Versatile Spinel Material Brings New Opportunities for Spintronics. Adv. Mater., 18: 1733–1736. doi: 10.1002/adma.200500972
- Issue published online: 27 JUN 2006
- Article first published online: 8 JUN 2006
- Manuscript Accepted: 23 NOV 2005
- Manuscript Received: 11 MAY 2005
- Thin films
Ultrathin layers of the versatile spinel oxide NiFe2O4 can be conductive or insulating depending on the growth conditions. Conductive NiFe2O4 (NFO) electrodes are inserted into conventional magnetic tunnel junctions containing La2/3Sr1/3MnO3/SrTiO3 (LMSO/STO) bilayers, and insulating and ferrimagnetic NiFe2O4 layers are used as barriers to define a spin filter (see figure). The ability of such heterostructures to highly spin-polarize electrons injected from a non-magnetic electrode is demonstrated.