Short-Range B-site Ordering in Inverse Spinel Ferrite NiFe2O4

V. G. Ivanov; M. V. Abrashev; M. N. Iliev; M. M. Gospodinov; J. Meen; M. I. Aroyo

doi:10.1103/PhysRevB.82.024104

Short-Range B-site Ordering in Inverse Spinel Ferrite NiFe2O4

Materials Science 2015-05-19 v1

Authors: V. G. Ivanov , M. V. Abrashev , M. N. Iliev , M. M. Gospodinov , J. Meen , M. I. Aroyo

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Abstract

The Raman spectra of single crystals of NiFe2O4 were studied in various scattering configurations in close comparison with the corresponding spectra of Ni0.7Zn0.3Fe2O4 and Fe3O4. The number of experimentally observed Raman modes exceeds significantly that expected for a normal spinel structure and the polarization properties of most of the Raman lines provide evidence for a microscopic symmetry lower than that given by the Fd-3m space group. We argue that the experimental results can be explained by considering the short range 1:1 ordering of Ni2+ and Fe3+ at the B-sites of inverse spinel structure, most probably of tetragonal P4_122/P4_322 symmetry.

Keywords

Raman spectra inverse spinel short-range ordering B-site NiFe2O4

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@article{arxiv.1005.2244,
  title  = {Short-Range B-site Ordering in Inverse Spinel Ferrite NiFe2O4},
  author = {V. G. Ivanov and M. V. Abrashev and M. N. Iliev and M. M. Gospodinov and J. Meen and M. I. Aroyo},
  journal= {arXiv preprint arXiv:1005.2244},
  year   = {2015}
}

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10 pages, 5 figures, 6 tables

Short-Range B-site Ordering in Inverse Spinel Ferrite NiFe2O4

Abstract

Keywords

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