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Self-Assembly and Magnetic Properties of MnO Coated FePt Nanoparticles

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6 Author(s)
S. Kang ; MINT Center, The University of Alabama, Tuscaloosa, AL, USA ; G. Miao ; S. Shi ; Z. Jia
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This paper reports on the synthesis and self-assembly of FePt/MnO core/shell nanoparticles. The enhanced magnetic properties of FePt nanoparticles with MnO coating is shown. Results also demonstrated the suppression of aggregation of MnO coated FePt nanoparticles during the annealing process. The magnetic moment of the FePt nanoparticles is significantly enhanced with the MnO shell. Also, the room temperature hysteresis loops curves reveal that the annealed FePt nanoparticles without the MnO shell have a large coercivity around 14 kOe, while FePt nanoparticles with the MnO shell show a sheared loop with a small coercivity about 3 kOe.

Published in:

INTERMAG 2006 - IEEE International Magnetics Conference

Date of Conference:

8-12 May 2006