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An empirical model for magnetic field dependent resistivity and magnetoresistance in manganites: application on polycrystalline charge–ordered La0.4Gd0.1Ca0.5MnO3

Abstract

In this communication, we have investigated the electrical and magnetic response of La0.4Gd0.1Ca0.5MnO3 polycrystalline sample. This sample seems to exhibit fascinating phenomena like charge ordering, magnetic phase separation, training effect and kinetic arrest. It also shows colossal values of negative magnetoresistance (~ 91.7% at 96K under 1T applied magnetic field), which raises the possibility of using this sample for technological applications. We also have proposed, in this work, a new empirical model to describe the evolution of resistivity and magnetoresistance as a function of magnetic field. This model was successfully tested on La0.4Gd0.1Ca0.5MnO3 sample in spite of its complicated magnetic behavior, which suggests the use of this model for other magnetic samples in order to check its validity.

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Publication details

The article was received on 06 Mar 2018, accepted on 12 Apr 2018 and first published on 12 Apr 2018


Article type: Paper
DOI: 10.1039/C8CP01486H
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
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    An empirical model for magnetic field dependent resistivity and magnetoresistance in manganites: application on polycrystalline charge–ordered La0.4Gd0.1Ca0.5MnO3

    A. Krichene, W. Boujelben, S. Mukherjee, N. A. Shah and P. S. Solanki, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP01486H

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