4.7 Article

A threshold of Vo+/Vo++ to room temperature ferromagnetism of hydrogenated Mn doped ZnO nanoparticles

Journal

APPLIED SURFACE SCIENCE
Volume 258, Issue 8, Pages 3350-3353

Publisher

ELSEVIER
DOI: 10.1016/j.apsusc.2011.08.080

Keywords

ZnO; Nanoparticle; Ferromagnetism; Photoluminescence; Oxygen vacancy; Gaussian analysis

Funding

  1. NSFC [50972139]

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Hydrogenated Mn doped Zn1-xMnxO (x = 0.03, 0.04, 0.08) nanoparticles were prepared by co-precipitation method. With the increase of Mn ions concentration, the magnetization of the hydrogenated Zn1-xMnxO increased. Photoluminescence spectra of samples annealed in Ar and H-2 respectively were performed and the visible bands were fitted with Gaussian analysis. It is concluded that the sharp magnetization enhancement could be attributed to the long-rang interaction between bound-magnetic-polarons led by the singly charged oxygen vacancy (Vo(+)). (C) 2011 Elsevier B.V. All rights reserved.

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