4th INTERNATIONAL WORKSHOP ON ELECTRODEPOSITED NANOSTRUCTURES 16-18 March 2006, Dresden, Germany	ABSTRACTS

ELECTRODEPOSITION OF Fe-Pt MULTILAYERS FOR PERMANENT MAGNETIC APPLICATIONS K. Leistner1,2, H. Schlörb1, S. Fähler1, L. Schultz1,2 1) IFW Dresden, Institute for Metallic Materials, P.O. Box: 270116, 01171 Dresden, Germany 2) Dresden University of Technology, Department of Mechanical Engineering, Institute for Materials Science, 01062 Dresden, Germany The L10 FePt phase exhibits a very high magnetocrystalline anisotropy and a high saturation magnetisation. Using electrodeposition, FePt films suitable for micromagnets in micro electromechanical systems can be produced. Up to now homogeneous FePt films have been deposited potentiostatically. During post annealing in hydrogen, the L10 phase is formed and coercivities up to 1.1 T are achieved [1]. However, up to 30 at.% of oxygen are incorporated into the films during electrodeposition that cannot be fully removed during annealing [2]. Less oxygen is incorporated when depositing the single elements. By alternating the deposition potential, Fe/Pt multilayers with a significantly lower oxygen content can be obtained. Annealing of these multilayers leads to complete intermixing and the formation of the L10 phase. Coercivities as high as 1 T are obtained. [1] K. Leistner, H. Schlörb, J. Thomas, M. Weisheit, S. Fähler, L. Schultz, Appl. Phys. Lett. 85(16), 3498 (2004). [2] K. Leistner, J. Thomas, S. Baunack, H. Schlörb, L. Schultz, S. Fähler, J. Magn. Magn. Mater. 290-291, 2 (2005) 1270.

 
 
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