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.
Received: 05 December 2008
Revised: 10 March 2009
Accepted manuscript online:
(Methods of micro- and nanofabrication and processing)
Fund: 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).
Cite this article:
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) Hydrothermal synthesis and dielectric properties of chrysanthemum-like ZnO particles 2009 Chin. Phys. B 18 4019
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