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Elsevier, Journal of Magnetism and Magnetic Materials, 2(316), p. e211-e214

DOI: 10.1016/j.jmmm.2007.02.092

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Structural and magnetic properties of ZnO:TM (TM: Co, Mn) nanopowders

Journal article published in 2007 by D. Rubi, A. Calleja, J. Arbiol ORCID, X. G. Capdevila, M. Segarra, L.-L. Aragonès, J. Fontcuberta
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We report on the structural and magnetic characterization of Co0.1Zn0.9O and Mn0.1Zn0.9O nanopowders obtained by a soft chemistry route. We show that those samples fired at low temperatures display a ferromagnetic interaction that can not be attributed to the presence of impurities. A magnetic aging mechanism is observed, reflecting the key role played by defects in the stabilization of ferromagnetism in this kind of diluted magnetic semiconductors. Comment: Presented at JEMS-06. Submitted to JMMM