Optical and Magnetic Properties of Hydrothermally Synthesized Al-Doped ZnO Nanorods

被引:7
|
作者
Lin, Teng-Tsai [1 ]
Young, San-Lin [2 ]
Kung, Chung-Yuan [1 ]
Chen, Hone-Zern [2 ]
Kao, Ming-Cheng [2 ]
Shih, Neng-Fu [2 ]
Shi, Jen-Bin [3 ]
You, Jia-He [4 ]
机构
[1] Natl Chung Hsing Univ, Dept Elect Engn, Taichung 40227, Taiwan
[2] Hsiuping Univ Sci & Technol, Dept Elect Engn, Taichung 41280, Taiwan
[3] Feng Chia Univ, Dept Elect Engn, Taichung 40724, Taiwan
[4] Hsiuping Univ Sci & Technol, Dept Elect Engn, Taichung 41280, Taiwan
关键词
GROWTH;
D O I
10.7567/JJAP.52.11NJ12
中图分类号
O59 [应用物理学];
学科分类号
摘要
Hereby ZnO and Al-doped ZnO nanorods were fabricated on the silicon substrate by a low temperature hydrothermal process at 90 degrees C. The nanorods were prepared to study the Al doping effect on their structural, optical and magnetic properties. The Al-doped nanorods exhibited a c-axis (002) oriented wurtzite hexagonal structure as that of ZnO nanorods. Then, photoluminescence spectra showed an increase of visible emission peak intensity indicating the increase of defects in the nanorods. The peak intensity of E2 high mode as shown in Raman shift spectra decreased with the introduction of Al-dopant and also proved the increase of defects concentration and the suppression of crystallization in Al-doped ZnO nanorods. Finally, the hysteresis loops revealed the room temperature ferromagnetism of both compositions. As compared with ZnO nanorods, Al-doped ZnO nanorods showed a remarkable increase of saturation magnetization due to the increase of crystal defects. (C) 2013 The Japan Society of Applied Physics
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页数:4
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