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Chinese Physics, 2007, Vol. 16(9): 2814-2817    DOI: 10.1088/1009-1963/16/9/053
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Synthesis of hexagonal monocrystal AlN microtubes and nanowires at low temperature

Lv Hui-Min(吕惠民)a)b), Chen Guang-De(陈光德)a), Yan Guo-Jun(颜国君)a, and Ye Hong-Gang(耶红刚)a)
a Department of Applied Physics, Xi'an Jiaotong University, Xi'an 710049, China; b Department of Applied Physics, Xi'an University of Technology, Xi'an 710048, China
Abstract  This paper reports that pure hexagonal aluminium nitride microtubes and nanowires growing along the [0001] direction have been successfully synthesized by directly reacting AlCl$_{3}$ with NaN$_{3}$ at low temperature (450℃) under condition of non-solvent system. The grey--white powder of reacting product was characterized by high-resolution transmission electron microscope (HRTEM), which shows that the powder is long straight-wire morphology with outer diameter from 40 nm to 300 nm and length up to several micrometres. The results of both electron diffraction (ED) and x-ray diffraction (XRD) indicate that the AlN microtubes have a pure hexagonal monocrystal tubular structure with the combination of the curled AlN nanobelts. Room-temperature photoluminescence spectrum of the synthesized sample showed an emission peak, which is closely related to the small size of the microtubes.
Keywords:  h-AlN      microtubes      nanowires  
Received:  23 November 2006      Revised:  29 January 2007      Accepted manuscript online: 
PACS:  81.20.-n (Methods of materials synthesis and materials processing)  
  61.66.Fn (Inorganic compounds)  
  68.37.Lp (Transmission electron microscopy (TEM))  
  78.55.Cr (III-V semiconductors)  
  78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)  
  81.16.-c (Methods of micro- and nanofabrication and processing)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10474078) and the Science Foundation of the Education Office of Shanxi Province, China.

Cite this article: 

Lv Hui-Min(吕惠民), Chen Guang-De(陈光德), Yan Guo-Jun(颜国君), and Ye Hong-Gang(耶红刚) Synthesis of hexagonal monocrystal AlN microtubes and nanowires at low temperature 2007 Chinese Physics 16 2814

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