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Structural, microstructural, transport, and magnetotransport properties of nanostructured La0.7Sr0.3MnO3 manganites synthesized by coprecipitation

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Abstract

The structural, transport, and magnetotransport properties of single-phase, homogeneous nanostructured La0.7Sr0.3MnO3 (LSMO) manganites synthesized by the coprecipitation route were investigated and the effect of sintering temperature on the microstructure of LSMO compounds was studied. A strong dependence of transport and magnetotransport behavior on the microstructure and nature of grain boundaries has been observed in the single-phase LSMO sintered at various temperatures. High-field magnetoresistance (HFMR) at room temperature is found to increase [13% (LS6) to 25% (LS9)] while low temperature (5 K) magnetoresistance decreases [75% (LS6) to 46% (LS9)] under 9 T field with increase in sintering temperature, which has been attributed to the spin-polarized tunneling and spin-dependent scattering of charge carriers.

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Authors and Affiliations

  1. Department of Physics, Saurashtra University, Rajkot -, 360 005, India

    P. S. Solanki, R. R. Doshi, U. D. Khachar, M. V. Vagadia, A. B. Ravalia & D. G. Kuberkar

  2. Department of Electronics, Saurashtra University, Rajkot -, 360 005, India

    N. A. Shah

Authors
  1. P. S. Solanki
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  2. R. R. Doshi
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  3. U. D. Khachar
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  4. M. V. Vagadia
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  5. A. B. Ravalia
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  6. D. G. Kuberkar
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  7. N. A. Shah
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Correspondence to D. G. Kuberkar.

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Solanki, P.S., Doshi, R.R., Khachar, U.D. et al. Structural, microstructural, transport, and magnetotransport properties of nanostructured La0.7Sr0.3MnO3 manganites synthesized by coprecipitation. Journal of Materials Research 25, 1799–1802 (2010). https://doi.org/10.1557/JMR.2010.0229

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  • DOI: https://doi.org/10.1557/JMR.2010.0229

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