Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 202, Issue -, Pages 159-168Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2017.09.011
Keywords
Nickel ferrite nanoparticles; Magnetic properties; Mossbauer spectroscopy; The Fe-57 local microenvironment
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Funding
- Ministry of Education and Science of the Russian Federation [3.1959.2017/4.6]
- Act 211 Government of the Russian Federation [02.A03.21.0006]
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Two samples of combustion synthesized nickel ferrite nanoparticles were characterized using X-ray diffraction, scanning and transmission electron microscopy, magnetization measurements and MOssbauer spectroscopy with a high velocity resolution. It was shown that MOssbauer spectra of nickel ferrite can be well fitted by using ten magnetic sextets related to the different numbers of Ni2+ cations in the Fe3+ local microenvironments in both tetrahedral and octahedral sites supported by calculations of such probabilities. it was shown that increase of the number of Ni2+ cations in the Fe-57 local microenvironment around both sites leads to decrease of the hyperfine field. (C) 2017 Elsevier B.V. All rights reserved.
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