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Bimagnetic Core/Shell Nanoparticles: Current Status and Future Possibilities

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Complex Magnetic Nanostructures

Abstract

In this chapter, we present recent advances in interface properties, and synthetic approaches to and applications of bimagnetic core/shell nanoparticles (NPs). First, a brief overview of magnetic core/shell architectures is presented. Then we introduce the principles behind magnetic and structural properties. In this connection, interface phenomena such as the proximity effect, exchange coupling, and exchange bias are summarized. Furthermore, the effects of crystal morphology and phase composition on these exchange interactions are discussed. Chemical methods to synthesize bimagnetic core/shell NPs, including thermal decomposition, seed-mediated growth, coprecipitation, and hydro/solvothermal approaches, are presented. Once produced, surface properties of the core/shell architecture need to be modulated since each application has special requirements. Moreover, a section devoted to the surface functionalization of NPs is given. Finally, applications of bimagnetic core/shell NPs in hyperthermia, magnetic resonance imaging, permanent magnets, and magnetic recording data, among other areas, are discussed in more depth.

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Acknowledgments

This work was partly sponsored by CAPES, CNPq, and Funcap (Brazilian agencies).

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  1. Departamento de Química Analítica e Físico-Química, Group of Chemistry of Advanced Materials (GQMAT), Universidade Federal do Ceará—UFC, Campus do Pic, CP 12100, Fortaleza, 60451-970, Brazil

    Tiago M. Freire, Wesley S. Galvão, Rafael M. Freire & P. B. A. Fechine

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  1. Tiago M. Freire
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  2. Wesley S. Galvão
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  3. Rafael M. Freire
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  4. P. B. A. Fechine
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Correspondence to P. B. A. Fechine .

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  1. Department of Physics, Federal University of Maranhão, São Luis, Maranhão, Brazil

    Surender Kumar Sharma

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Freire, T.M., Galvão, W.S., Freire, R.M., Fechine, P.B.A. (2017). Bimagnetic Core/Shell Nanoparticles: Current Status and Future Possibilities. In: Sharma, S. (eds) Complex Magnetic Nanostructures. Springer, Cham. https://doi.org/10.1007/978-3-319-52087-2_3

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