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Title: Effect of cobalt doping concentration on the structural and magnetic properties of Fe3O4
Authors: Tripathy, D. 
Adeyeye, A.O. 
Piramanayagam, S.N.
Mah, C.S.
Gao, X. 
Wee, A.T.S. 
Keywords: Co doping
Half metals
Issue Date: 18-May-2006
Citation: Tripathy, D., Adeyeye, A.O., Piramanayagam, S.N., Mah, C.S., Gao, X., Wee, A.T.S. (2006-05-18). Effect of cobalt doping concentration on the structural and magnetic properties of Fe3O4. Thin Solid Films 505 (1-2) : 45-49. ScholarBank@NUS Repository.
Abstract: In this work, we investigate the effects of cobalt doping on the structural, magnetic and transport properties of half metallic Fe 3O4 films fabricated on MgO (100) substrates by co-sputtering. The doped films exhibit a highly broadened metal-insulator Verwey transition as compared to that of undoped Fe3O4 films. The magnetic and transport properties of the doped films are markedly sensitive to the Co doping concentration; films with high Co doping exhibit almost negligible coercivity at room temperature. Magnetoresistance (MR) curves show linear magnetic field dependence for the undoped films, while a reduction in MR and departure from linear field dependence is observed for Co-doped films. © 2005 Elsevier B.V. All rights reserved.
Source Title: Thin Solid Films
ISSN: 00406090
DOI: 10.1016/j.tsf.2005.10.036
Appears in Collections:Staff Publications

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