NDLI: Structural and magnetic characterization of 100-kGy Co$^{60}$ γ-ray-irradiated ZnFe$_{2}$O$

Content Provider	Springer Nature Link
Author	Raut, Anil V. Jadhav, S. A. Shengule, D. R. Jadhav, K. M.
Copyright Year	2016
Abstract	Nanocrystalline spinel ferrite was prepared by sol–gel auto-combustion technique and sintered at 600 °C for 12 h. Single-phase cubic spinel structure of zinc ferrite was confirmed through X-ray diffractometry. Several structural and magnetic properties of ZnFe$_{2}$O$_{4}$ NPs were studied after Co$^{60}$ γ-irradiation with total gamma dose of 50 and 100 kGy. An average crystallite size was determined from the full width at half maximum of strongest reflection (311) by using Scherrer’s approximation. Williamson–Hall plot (graph against βcosθ and 4sinθ) was used to re-evaluate the measured crystallite size and to estimate the strain distribution in terms of η%. Lattice constant (α) initially increased slightly to 8.441 Å with γ-50 kGy and then decreased dramatically with total dose of γ-100 kGy. Frustrated behaviour in peak shift to lower and higher 2θ side can be seen in XRD after γ-irradiation to ZnFe$_{2}$O$_{4}$ NPs. FT-IR spectra confirmed the formation of ferrite phase and redistribution of cations in (A) and [B] sites of ZnFe$_{2}$O$_{4}$ spinel structure. In the first derivative peak of ESR spectroscopy, gyroscopic spitting factor (g-value) and linewidth (∆H$_{PP}$) were used to deliberate the γ-radiation damage in investigated ferrimagnetic nanoparticles. Experimental results revealed that the saturation magnetization (M $_{s}$), coercivity (H $_{c}$) and magneton number (n $_{B}$) of ZnFe$_{2}$O$_{4}$ NPs were found to be increased after gamma irradiation dose of γ-100 kGy.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	79
Issue Number	1
e-ISSN	15734846
Language	English
Publisher	Springer US
Publisher Date	2016-03-21
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ferrite nanoparticles Sol–gel auto-combustion Williamson–Hall plot ESR Radiation damage Ceramics, Glass, Composites, Natural Methods Inorganic Chemistry Optical and Electronic Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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