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Advances in Condensed Matter Physics
Volume 2014 (2014), Article ID 627975, 6 pages
http://dx.doi.org/10.1155/2014/627975
Research Article

Magnetic Properties of Well-Aligned ZnO Nanorod Arrays Grown by a Simple Hydrothermal Reaction

School of Information Science and Technology, Northwest University, Xi’an 710127, China

Received 8 November 2013; Revised 23 January 2014; Accepted 31 January 2014; Published 29 April 2014

Academic Editor: Xuan Luo

Copyright © 2014 Jiangni Yun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Well-aligned ZnO nanorod arrays with room temperature ferromagnetism were prepared on glass substrate through hydrothermal method. The as-prepared nanorod arrays were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), photoluminescence (PL) spectrum, and magnetization measurements. The XRD and SEM results indicated that the ZnO nanorods are with the wurtzite structure and exhibit preferential (002) orientation with -axis perpendicular to the substrate surface. The PL results suggested that the possible defect in the as-prepared ZnO nanorod arrays might be , , or . The first-principles calculations reveal that the room temperature ferromagnetism may result from the defects present in the ZnO nanorod and the hybridization of the Zn 3d states with O 2p states is responsible for the half-metallic ferromagnetism in ZnO nanorod.