Sonochemical synthesis and characterization of FeCo nanoparticles (Abstract/Poster in convegno)

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  • Sonochemical synthesis and characterization of FeCo nanoparticles (Abstract/Poster in convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
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  • Elvira M. Bauer, Davide Peddis, Elisabetta Agostinelli, Xiaocao Hu, George Hadjipanayis (2013)
    Sonochemical synthesis and characterization of FeCo nanoparticles
    in Joint European Magnetic Symposia JEMS 2013, Rhodes (Greece), 25-30 August 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Elvira M. Bauer, Davide Peddis, Elisabetta Agostinelli, Xiaocao Hu, George Hadjipanayis (literal)
Note
  • Poster (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Structure of Matter, C.N.R., Montelibretti (Rome), Italy Departement of Physics and Astronomy, University of Delaware, Newark, U.S.A. (literal)
Titolo
  • Sonochemical synthesis and characterization of FeCo nanoparticles (literal)
Abstract
  • Soft magnetic NPs have gained a lot of attention during the last decades because of their possible application in high performance exchange-spring permanent magnets. In this regards the FeCo alloys represent the most interesting NPs materials and several chemical strategies have been successfully explored with the aim to control composition, morphology, size and magnetic properties. Only recently acoustic cavitation (sonochemistry) has been proposed for the synthesis of FeCo alloys leading mostly to formation of amorphous NPs in the case of primary sonochemistry.[1] I n the present work we present our approach based on a modified surfactant-free polyol process promoted by secondary sonochemical synthesis suitable for formation of nanocrystalline materials. XRD analysis of the obtained black precipitate revealed formation of nanocrystalline FeCo alloy. The isolated material showed a maximum saturation magnetization of 200 emu/g and extremely low coercivity. TEM and HRTEM analysis showed formation of cubic nanocrystalline FeCo NPs with size distribution in the range of 10 - 200 nm as expected in absence of confining media during reaction. This study has been supported by the European IRSES NANOMAG Project. REFERENCES [1] K.S. SUSLICK, T. HYEON, M. FANG, Chem. Mater. 8, 2172 (1996) (literal)
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