Abstract
Al Doping Effect on the Growth Rate Enhancement and Magnetic Properties of ZnO Nanorods Synthesized By Hydrothermal Method
Highlights
ZnO-based diluted magnetic semiconductor (DMS) has attracted much attention for their possible use as biomedical materials
Nano structured ZnO exhibits a significant increase of -OH groups on the surface, which can be readily functioned by various surface decorating molecules
Al-doped ZnO nanorods have been fabricated on Si substrates separately by a low temperature hydrothermal method
Summary
Well-defined Al-doped nanorods have been synthesized by a low temperature hydrothermal method. The XRD patterns of all compositions with single diffraction peak (002) show the same wurtzite hexagonal structure. The length and diameter of the Al-ZnO nanorods observed by FESEM increase with the increase of Al doping indicating the enhancement of growth rate by the doping of Al. Photoluminescence spectra showed a red-shift of the UV emission peak position indicating the substitution of Al for Zn. Ferromagnetism is observed from the results of magnetization measurement. The increase of the saturation magnetization reveals an association with the increase of defects induced by the doping of the Al in the nanorods
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