Cation distribution: a key to ascertain the magnetic interactions in a cobalt substituted Mg–Mn nanoferrite matrix

文献情報

出版日 2017-06-06

DOI 10.1039/C7CP01993A

インパクトファクター 3.676

著者

Gagan Kumar, R. K. Kotnala, Jyoti Shah, Vijay Kumar, Arun Kumar, Pooja Dhiman, M. Singh

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要旨

The effect of Co2+ substitution into nanocrystalline Mg–Mn ferrite synthesized by a solution combustion technique has been studied. The cation distribution has been inferred from X-ray diffraction, the magnetization technique, and Mössbauer spectroscopy. The X-ray analysis and cation distribution data have been used to investigate the detailed structural parameters such as hopping lengths, ionic radii of tetrahedral and octahedral sites, oxygen positional parameter, site bond as well as edge lengths, bond lengths, and bond angles. The variation in the theoretically predicted bond angles suggested the strengthening of the A–B super-exchange interactions, and the same has been supported by M–H and M–T, as well as by Mössbauer studies. The ZFC–FC study revealed that anisotropy increases with the incorporation of cobalt ions. The values of magneton number, theoretical lattice parameter, and Curie temperature that have been calculated by using the cation distribution are found to match well with the experimentally obtained values.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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