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Issue 12, 2015
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Electrical transport and giant magnetoresistance in La0.75Sr0.25Mn1−xCrxO3 (0.15, 0.20 and 0.25) manganite oxide

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Abstract

We have investigated the influence of chromium (Cr) doping on the magneto-electrical properties of polycrystalline samples La0.75Sr0.25Mn1−xCrxO3 (0.15 ≤ x ≤ 0.25), prepared by the sol–gel method. Comparison of experimental data with the theoretical models shows that in the metal-ferromagnetic region, the electrical behavior of the three samples is quite well described by a theory based on electron–electron, electron–phonon and electron–magnon scattering and Kondo-like spin dependent scattering. For the high temperature paramagnetic insulating regime, the adiabatic small polaron hopping (SPH) model is found to fit well the experimental curves.

Graphical abstract: Electrical transport and giant magnetoresistance in La0.75Sr0.25Mn1−xCrxO3 (0.15, 0.20 and 0.25) manganite oxide

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Publication details

The article was received on 28 Nov 2014, accepted on 07 Feb 2015 and first published on 09 Feb 2015


Article type: Paper
DOI: 10.1039/C4DT03662J
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Citation: Dalton Trans., 2015,44, 5620-5627

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    Electrical transport and giant magnetoresistance in La0.75Sr0.25Mn1−xCrxO3 (0.15, 0.20 and 0.25) manganite oxide

    Ah. Dhahri, M. Jemmali, E. Dhahri and E. K. Hlil, Dalton Trans., 2015, 44, 5620
    DOI: 10.1039/C4DT03662J

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