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

Benedict Christopher, Ashok Rao, Utpal Deka, Shyam Prasad K, G. S. Okram, Ganesh Sanjeev, Vikash Chandra Petwal, Vijay Pal Verma, Jishnu Dwivedi

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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 super-paramagnetic characteristics in the samples.

Original languageEnglish
Pages (from-to)26-32
Number of pages7
JournalPhysica B: Condensed Matter
Volume540
DOIs
Publication statusPublished - 01-07-2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Christopher, B., Rao, A., Deka, U., Prasad K, S., Okram, G. S., Sanjeev, G., Chandra Petwal, V., Verma, V. P., & Dwivedi, J. (2018). Electrical, thermal and magnetic studies on 7.5 MeV electron beam irradiated PrCoO3 polycrystalline samples. Physica B: Condensed Matter, 540, 26-32. https://doi.org/10.1016/j.physb.2018.04.026