Hashim, Mohd and -, Alimuddin and Kumar, Shalendra and Shirsath, Sagar E. and Kotnala, R. K. and Shah, Jyoti and Kumar, Ravi (2013) Influence of Cr3+ ion on the structural, ac conductivity and magnetic properties of nanocrystalline Ni-Mg ferrite. Ceramics International, 39 (2). pp. 1807-1819. ISSN 0272-8842

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Nanocrystalline samples of the Ni–Mg ferrite with the general chemical formula Ni0.5Mg0.5CrxFe2�xO4(0rxr1.0, in the step of0.2) have been synthesized by the citrate-gel auto combustion route. The synthesized samples were characterized by means of XRD,EDAX, FT-IR, UV–visible, dielectric, ac impedance spectroscopy, and AFM, SEM, TEM and FC/ZFC measurements. X-ray powderdiffraction of all the samples were carried out at room temperature to check the formation of the required products and structuralrelated properties. The elemental analysis as obtained from the EDAX measurement is in close agreement with the expected compositionfrom the stoichiometry of the reactant solutions. IR studies confirm two main absorption bands in the frequency range of 400–800 cm�1, arising due to the tetrahedral (A) and octahedral [B] stretching vibrations. Impedance spectroscopy techniques have beenused to study the effect of grain and grain boundary on the electrical properties of the prepared samples. The samples were zero fieldcooled (ZFC) to 100 K. Typical blocking temperature effects were observed below the temperature of about 129 K. The obtained resultshave been discussed so as to bring out the role of chromium substitution on the structural, dielectric and magnetic properties of Ni–Mgferrites.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Elsevier.
Subjects: Materials Science
Depositing User: Users 27 not found.
Date Deposited: 27 Jul 2020 11:48
Last Modified: 27 Jul 2020 11:48
URI: http://npl.csircentral.net/id/eprint/3170

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