中国物理B ›› 2009, Vol. 18 ›› Issue (9): 4019-4024.doi: 10.1088/1674-1056/18/9/067

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Hydrothermal synthesis and dielectric properties of chrysanthemum-like ZnO particles

闫军锋, 张志勇, 游天桂, 赵武, 贠江妮   

  1. School of Information Science and Technology, Northwest University, Xi'an 710069, China
  • 收稿日期:2008-12-05 修回日期:2009-03-10 出版日期:2009-09-20 发布日期:2009-09-20
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No 2005A000200), the Xi'an Applied Materials Innovation Fund (Grant No XA-AM-200712), and the Innovative Experiment Program for Chinese students (Grant No State 200721).

Hydrothermal synthesis and dielectric properties of chrysanthemum-like ZnO particles

Yan Jun-Feng(闫军锋), Zhang Zhi-Yong(张志勇)† , You Tian-Gui(游天桂), Zhao Wu(赵武), and Yun Jiang-Ni(贠江妮)   

  1. School of Information Science and Technology, Northwest University, Xi'an 710069, China
  • Received:2008-12-05 Revised:2009-03-10 Online:2009-09-20 Published:2009-09-20
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No 2005A000200), the Xi'an Applied Materials Innovation Fund (Grant No XA-AM-200712), and the Innovative Experiment Program for Chinese students (Grant No State 200721).

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摘要： By orthogonal design theory, technological parameters of chrysanthemum-like ZnO particles prepared in a hydrothermal process are optimized. This paper reports a set of technological parameters for growing chrysanthemum-like ZnO particles on a large scale. It investigates the morphologies and crystalline structures of the as-synthesized three-dimensional ZnO particles with a scanning electron microscope, x-ray diffractometer and transmission electron microscope, and the possible growth mechanism on the three-dimensional ZnO particles. The experimental results indicate that the values of ε', ε '' and \tan δe gradually increase in the X band with the improvement of the developmental level of chrysanthemum-like ZnO particles, implying that the electromagnetic wave absorbing property depends on the morphologies of three-dimensional ZnO particles.

Abstract: By orthogonal design theory, technological parameters of chrysanthemum-like ZnO particles prepared in a hydrothermal process are optimized. This paper reports a set of technological parameters for growing chrysanthemum-like ZnO particles on a large scale. It investigates the morphologies and crystalline structures of the as-synthesized three-dimensional ZnO particles with a scanning electron microscope, x-ray diffractometer and transmission electron microscope, and the possible growth mechanism on the three-dimensional ZnO particles. The experimental results indicate that the values of $\varepsilon'$, $\varepsilon''$ and tan$\delta_{\rm e}$ gradually increase in the X band with the improvement of the developmental level of chrysanthemum-like ZnO particles, implying that the electromagnetic wave absorbing property depends on the morphologies of three-dimensional ZnO particles.

Key words: ZnO, orthogonal design, hydrothermal process, chrysanthemum-like particles

中图分类号:  (Growth from solutions)

  • 81.10.Dn
77.22.Ch (Permittivity (dielectric function)) 81.16.-c (Methods of micro- and nanofabrication and processing)