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Mn-Doping Effects on Structure and Magnetic Properties of ZnO Nanoparticles

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Abstract

Magnetic properties of Mn-doped ZnO nanoparticles, synthesized by the co-precipitation method, have been studied. The presence of a single crystalline phase identified as the wurtzite structure was determined by X-ray diffraction measurements in all the samples. Additional Bragg reflections associated to manganese oxides phases have been found in the 10 mol\(\%\) Mn-doped ZnO sample which are more evident after calcinating at high temperatures. Magnetization measurements reveal a paramagnetic behavior with antiferromagnetic interactions becoming weaker as the Mn concentration is increased. For the 10 mol\(\%\) Mn-doped ZnO sample the coexistence of a paramagnetic and a ferromagnetic phase has been determined. The latter phase was associated with the presence of Mn\(_3\)O\(_4\) compound which is in agreement with the structural results.

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Acknowledgments

We would like to thank the Brazilian agencies CAPES and CNPq for providing the financial support.

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Authors and Affiliations

  1. Institute of Physics, University of Brasilia, Brasília, DF, 70910-900, Brazil

    J. E. Ramos, M. Montero-Muñoz & J. A. H. Coaquira

  2. Department of Physics, University of Cauca, Popayán, Colombia

    J. E. Rodríguez-Páez

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  1. J. E. Ramos
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  2. M. Montero-Muñoz
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  3. J. A. H. Coaquira
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  4. J. E. Rodríguez-Páez
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Correspondence to J. E. Ramos.

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Ramos, J.E., Montero-Muñoz, M., Coaquira, J.A.H. et al. Mn-Doping Effects on Structure and Magnetic Properties of ZnO Nanoparticles. J Low Temp Phys 179, 42–47 (2015). https://doi.org/10.1007/s10909-014-1246-x

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  • DOI: https://doi.org/10.1007/s10909-014-1246-x

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