Effect of zinc substitution on magnetic and electrical properties of nanocrystalline nickel ferrite synthesized by refluxing method

Nanocrystalline Nickel ferrite (NiFe2O4) and Zn substituted nickel ferrite (NiZnFe2O4) have been synthesized by the refluxing method. These ferrites were characterized by XRD, TEM, Mossbauer spectroscopy and VSM in order to study the effect of zinc substitution in nickel ferrite. XRD diffraction res...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2012-04, Vol.407 (7), p.1104-1107
Main Authors: Nandapure, A.I., Kondawar, S.B., Sawadh, P.S., Nandapure, B.I.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electrical conductivity
Electrical resistivity
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of nanostructures
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Mossbauer spectroscopy
Mössbauer effect
other γ-ray spectroscopy
Nanocrystals
Nickel ferrite
Nickel ferrites
Nickel zinc ferrite
Physics
Reflux method
Resistivity
Transmission electron microscopy
VSM
Zinc
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Summary:Nanocrystalline Nickel ferrite (NiFe2O4) and Zn substituted nickel ferrite (NiZnFe2O4) have been synthesized by the refluxing method. These ferrites were characterized by XRD, TEM, Mossbauer spectroscopy and VSM in order to study the effect of zinc substitution in nickel ferrite. XRD diffraction results confirm the spinel structure for the prepared nanocrystalline ferrites with an average crystallite size of 14–16nm. Lattice parameter was found to increase with the substitution of Zn2+ ions from 8.40Å to 8.42Å. TEM images confirmed average particle size of about 20nm and indicates nanocrystalline nature of the compounds. A shift in isomeric deviation with the doublet was observed due to the influence of Zn substitution in the nickel ferrite. The Zn content has a significant influence on the magnetic behavior and electrical conductivity of NiFe2O4. Saturation magnetization drastically increased whereas room temperature electrical conductivity decreased due to the addition of Zn content in NiFe2O4, indicating super magnetic material with lesser coercivity.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2012.01.081