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Journal of Low Temperature Physics

, Volume 179, Issue 1–2, pp 42–47 | Cite as

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

  • J. E. Ramos
  • M. Montero-Muñoz
  • J. A. H. Coaquira
  • J. E. Rodríguez-Páez
Article

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.

Keywords

Mn-doped ZnO Co-precipitation Nanoparticles Magnetization 

Notes

Acknowledgments

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

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • J. E. Ramos
    • 1
  • M. Montero-Muñoz
    • 1
  • J. A. H. Coaquira
    • 1
  • J. E. Rodríguez-Páez
    • 2
  1. 1.Institute of PhysicsUniversity of BrasiliaBrasíliaBrazil
  2. 2.Department of PhysicsUniversity of CaucaPopayánColombia

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