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

Rubi, D.; Calleja, A.; Arbiol, J.; Capdevila, X. G.; Segarra, M.; Aragones, Ll.; Fontcuberta, J.

doi:10.1016/j.jmmm.2007.02.092

arXiv 2006-08-01 DOI 10.1016/j.jmmm.2007.02.092 0 مشاهدة

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

Rubi, D. · Calleja, A. · Arbiol, J. · Capdevila, X. G. · Segarra, M. · Aragones, Ll. · Fontcuberta, J.

Materials Science

الأصل · EN

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.

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