Electrical, thermal and magnetic studies on 7.5 MeV electron beam irradiated PrCoO3 polycrystalline samples

Christopher, Benedict and Rao, Ashok and Utpal, Deka and Shyam Prasad, K and Okram, G S and Ganesh, Sanjeev and Petwal, V C and Verma, Vijay Pal and Dwivedi, Jishnu (2018) Electrical, thermal and magnetic studies on 7.5 MeV electron beam irradiated PrCoO3 polycrystalline samples. Physica B: Condensed Matter, 540 (01). pp. 26-32. ISSN 0921-4526

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Abstract

The study of electronic and magnetic properties of electron beam (EB) irradiated PrCoO3 manganites is presented in this communication. The diffraction data confirms that pristine as well as electron beam irradiated samples are single phased and they crystalize at orthorhombic distorted structure with Pbnm space group. The electrical resistivity of all the samples reveals semiconducting behavior. Small polaron hopping model is appropriately employed to investigate the semiconducting nature of the pristine and EB irradiated samples. The Seebeck coefficient (S) data of the pristine sample exhibits colossally high positive value (about 300 mV/K) and substantial decrease in S value is noticed in the irradiated samples. The high temperature analysis of thermopower data validates the small polaron hopping model. The magnetic measurements display possible existence of superparamagnetic characteristics in the samples.

Item Type: Article
Uncontrolled Keywords: Cobaltites Electron beam irradiation Rietveld refinement Super-paramagnetism
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 06 Jul 2018 09:26
Last Modified: 06 Jul 2018 09:26
URI: http://eprints.manipal.edu/id/eprint/151497

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