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Magnetic properties of maghemite nanoparticles

  • Proceedings of the International Symposium “Physics of Crystals 2013”
  • Published:
Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Magnetic particles of maghemite (spinel γ-Fe2O3) are synthesized by means of aerosol pyrolysis, making it possible to produce chemically uniform highly-dispersed single-phase materials. The magnetic properties of synthesized particles for temperatures ranging from helium temperature up to room temperature and higher are investigated using a SQUID magnetometer. The experimental curves are compared to the results from calculations performed by the Monte Carlo method. It is found that the Curie temperature is lower for γ-Fe2O3 nanoparticles than for bulk samples. Several parameters of the material are estimated by comparing the experimental and calculated results.

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Authors and Affiliations

  1. Department of Low-Temperature Physics, Moscow State University, Moscow, 119991, Russia

    V. N. Nikiforov, A. E. Goldt & E. A. Gudilin

  2. ANO Scientific Innovation Center for Space Rocket Hardware (NITs RKT), Moscow, 127642, Russia

    V. N. Nikiforov & V. G. Sredin

  3. Institute for Metal Physics, Ural Branch, Russian Academy of Science, Yekaterinburg, 620041, Russia

    V. Yu. Irhin

Authors
  1. V. N. Nikiforov
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  2. A. E. Goldt
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  3. E. A. Gudilin
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  4. V. G. Sredin
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  5. V. Yu. Irhin
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Corresponding author

Correspondence to V. N. Nikiforov.

Additional information

Original Russian Text © V.N. Nikiforov, A.E. Goldt, E.A. Gudilin, V.G. Sredin, V.Yu. Irhin, 2014, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2014, Vol. 78, No. 10, pp. 1330–1335.

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Nikiforov, V.N., Goldt, A.E., Gudilin, E.A. et al. Magnetic properties of maghemite nanoparticles. Bull. Russ. Acad. Sci. Phys. 78, 1075–1080 (2014). https://doi.org/10.3103/S1062873814100141

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  • DOI: https://doi.org/10.3103/S1062873814100141

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