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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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