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Investigation of wide range magnetoresistance in La0.7Ca0.3−xAgxMnO3 (0 ≤ x ≤ 0.2) system

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Abstract

We synthesized magnetoresistive compounds with nominal compositions La0.7Ca0.3−xAgxMnO3 (0 ≤ x ≤ 0.2) by solid state reaction method with different sintering temperatures. All the samples exhibited orthorhombic structure with variable lattice parameters. The metal-insulator transitions were observed below room temperature in most of the samples. Depending upon the composition and sintering temperature, the samples showed very high magnetoresistance in narrow range or significant magnetoresistance over wide range of temperature. The ac susceptibility measurement revealed compositional dependence of Curie temperature.

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Acknowledgments

We are thankful to CSIR, New Delhi and UGC-DAE CSR, Indore for providing financial support. We acknowledge the access to experimental facilities and suggestions given by Dr Rajiv Rawat, Dr. Alok Banerjee and Dr Mukul Gupta at UGC-DAE CSR, Indore.

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  1. Department of Physics, Barkatullah University, Bhopal, 462026, India

    Rashmi Yadav & Vilas Shelke

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  1. Rashmi Yadav
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  2. Vilas Shelke
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Correspondence to Vilas Shelke.

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Yadav, R., Shelke, V. Investigation of wide range magnetoresistance in La0.7Ca0.3−xAgxMnO3 (0 ≤ x ≤ 0.2) system. J Mater Sci: Mater Electron 24, 1141–1145 (2013). https://doi.org/10.1007/s10854-012-0896-1

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  • DOI: https://doi.org/10.1007/s10854-012-0896-1

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