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Study of Fe-doped ZnO by Mechanical Alloying

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Abstract

Zn100−x OFe x samples were obtained by mechanical alloying (MA) with different milling times. The purpose of this work was to analyze the variation of hyperfine parameters of the system with milling time. X-ray patterns show that pure ZnO under mechanical milling is not contaminated; additionally the system obtained by mechanical alloying has a wurtzite structure similar to pure ZnO. Mössbauer spectra show that all samples present two phases: paramagnetic and ferromagnetic. The milling time contributes to increase the paramagnetic phase; however, the Mössbauer spectra taken for samples milled during 36 and 99 hours indicates that there is a solubility limit for Fe atoms in ZnO lattice due that the spectra area remains nearly constant after 36 h. Mössbauer spectrometry shows that the Fe atoms which penetrate inside the ZnO matrix behave like Fe3+ and Fe2+.

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Acknowledgements

This work is partially supported by “El Patrimonio Autónomo Fondo Nacional de Financiamiento para la Ciencia, la Tecnología y la Innovación Francisco José de Caldas” Contract RC No. 275-2011. This work too has been carried out with the colaboration of The Universidad del Valle and CENM. The authors are greatly indebted for financial support.

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Authors and Affiliations

  1. Department of Physics, Universidad del Valle, A.A. 25360, Cali, Colombia

    J. F. Piamba, J. C. Paz, Ligia E. Zamora & G. A. Pérez Alcázar

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  1. J. F. Piamba
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  2. J. C. Paz
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  3. Ligia E. Zamora
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  4. G. A. Pérez Alcázar
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Correspondence to J. F. Piamba.

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Piamba, J.F., Paz, J.C., Zamora, L.E. et al. Study of Fe-doped ZnO by Mechanical Alloying. J Supercond Nov Magn 25, 2223–2226 (2012). https://doi.org/10.1007/s10948-012-1652-8

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  • DOI: https://doi.org/10.1007/s10948-012-1652-8

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