Structural, electrical, magnetic and thermal properties of Gd1–xSrx MnO3 (0.2rxr0.5) manganites

Nagaraja, B S and Rao, Ashok and Babu, P D and Okram, G S (2015) Structural, electrical, magnetic and thermal properties of Gd1–xSrx MnO3 (0.2rxr0.5) manganites. Physica B. pp. 10-20. ISSN 0921-4526

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A systematic study on structural, electrical, magnetic and thermoelectric properties of bulk samples of Gd1–xSrxMnO3, synthesized by solid state reaction, is carried out in this communication. All the samples are in single phase with no detectable impurities. All the samples exhibit insulating behavior and the results indicate that high temperature electrical resistivity can be explained using small polaron hopping (SPH) model, whereas variable hopping model (VRH) model is valid in the low temperature regime. The magnetization results show that large irreversible magnetization is observed at low temperatures. The thermoelectric power measurement demonstrates that these samples exhibit colossal thermoelectric power

Item Type: Article
Uncontrolled Keywords: Manganites Solid statereaction Rietveld refinement Magnetization Thermoelectric power
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 08 Feb 2016 15:57
Last Modified: 08 Feb 2016 15:57

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