NDLI: Synthesis of Superparamagnetic Nanoparticle Ni$_{0.50}$Zn$_{0.50}$Fe$_{2}$O$

Content Provider	Springer Nature Link
Author	Kothawale, Maj M. Pednekar, Rajesh Meena, Sher Singh
Copyright Year	2014
Abstract	The nanoparticles of Ni$_{0.50}$Zn$_{0.50}$Fe$_{2}$O$_{4}$ were prepared using cotton base wet chemical method. The X-ray diffraction (XRD) spectrum shows single phase cubic spinel structure, and crystallize size calculated using the Debye–Scherrer formula for 311 planes was found to be 41 nm ± 5 %. The nano range sizes of particle were confirmed using transmission electron microscope (TEM) and atomic force microscopy (AFM) images. The porosity value of the sample is promising towards sensor applications. Infrared spectroscopic results reveal two main absorption bands, indicating sample is having single phase spinel structure with two sublattices. The high DC resistivity of the sample is attributed to nano range particle sizes. The superparamagnetic (SPM) nature was confirmed from a variation of magnetic moment with applied magnetic field using VSM. The Mössbauer spectrum recorded at room temperature shows two major sextets corresponding to A- and B-site Fe ions. The relaxed sextet is associated with the atoms near the surface of the nanoparticles experiencing disordered spins. The central doublet in Mössbauer spectra of the sample indicates SPM particles. The isomer shift results show that all the Fe ions are in high state.
Starting Page	2829
Ending Page	2833
Page Count	5
File Format	PDF
ISSN	15571939
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	27
Issue Number	12
e-ISSN	15571947
Language	English
Publisher	Springer US
Publisher Date	2014-09-16
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ni–Zn ferrites XRD TEM Superparamagnetism Isomer shift DC resistivity Strongly Correlated Systems, Superconductivity Magnetism, Magnetic Materials Condensed Matter Physics Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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