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Issue 46, 2015
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The effect of manganite nanoparticle addition on the low field magnetoresistance of polyaniline

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Abstract

In this report, we studied the effect of the addition of manganite nanoparticles on the microstructure and magnetotransport properties of polyaniline polymers. We showed experimental results on the fractal dimension of the polyaniline–manganite nanocomposites by means of small angle X-ray scattering measurements. A decrease in the number of polarons is observed for the composite with a concentration of 20% manganite nanoparticles. On the other hand, for the same concentration, the presence of a low magnetic field increases the number of polarons, in relation to an enhancement of the negative low field magnetoresistance (LFMR). This enhancement was observed for a critical amount of manganite nanoparticle addition in the whole temperature regime analyzed, as envisaged from the low magnetic field dependence in the polyaniline polaron formation observed using confocal Raman spectroscopy at room temperature.

Graphical abstract: The effect of manganite nanoparticle addition on the low field magnetoresistance of polyaniline

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Publication details

The article was received on 27 Sep 2015, accepted on 28 Oct 2015 and first published on 29 Oct 2015


Article type: Paper
DOI: 10.1039/C5TC03083H
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. C, 2015,3, 12040-12047
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    The effect of manganite nanoparticle addition on the low field magnetoresistance of polyaniline

    M. Romero, R. Faccio, H. Pardo, M. A. Tumelero, B. Montenegro, C. Campos Plá Cid, A. A. Pasa and Á. W. Mombrú, J. Mater. Chem. C, 2015, 3, 12040
    DOI: 10.1039/C5TC03083H

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