Breaking of ferrimagnetic ordering in Sc3+ doped Mn-Zn ferrites due to high energy Gamma irradiation


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Angadi, J. and Matteppanavar, S. and Katti, R.B. and Rudraswamy, B. and Praveena, K. (2017) Breaking of ferrimagnetic ordering in Sc3+ doped Mn-Zn ferrites due to high energy Gamma irradiation. In: 61st DAE Solid State Physics Symposium, 26 December 2016 through 30 December 2016, Odisha.

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For the first time, we report the effect of high energy gamma irradiation induced structural and magnetic properties of nanocrystalline Mn0.5Zn0.5ScyFe2-yO4 (y = 0.01, 0.03 and 0.05) samples synthesized by solution combustion method using a mixture of fuels. All samples were exposed to a dose of 25 kGy gamma radiations originating from a 60Co source. The as prepared samples and the samples after gamma irradiation were characterized by X-ray diffraction, Fourier transform Infrared spectroscopy and vibrating sample magnetometry at RT. The XRD results reveal that all the pristine samples have shown single phase cubic structure before and after gamma irradiation. The lattice parameter increases on increasing Sc3+ content after gamma irradiation. FTIR reveals that, after gamma irradiation the absorption peaks are shifted to higher frequency. In M-H loops, we observe decrease in saturation magnetization, remnant and coercivity of the samples due to breaking of ferrimagnetic ordering, when a high energy gamma ray passed through the material. Our results are important for understanding the stability and performance of the materials and the devices used in various technological applications. © 2017 Author(s).

Item Type: Conference or Workshop Item (Paper)
Additional Information: cited By 0
Subjects: Faculty of Science > Pure Sciences > Physics
Divisions: Jnana Bharathi / Central College Campus > Department of Physics
Depositing User: Dr. M Anjanappa
Date Deposited: 12 Jun 2018 10:09
Last Modified: 12 Jun 2018 10:09

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