Defect and electrical properties of nanocrystalline tungsten trioxide

doi:10.1088/1009-1963/13/9/026

Abstract

Abstract Nanocrystalline tungsten trioxide particles were prepared by a wet-chemical method. Transmission electron microscope (TEM) analysis shows that the average grain size is about 15nm. The oxygen deficiency of nanometre-sized sample is higher than that of ordinary tungsten trioxide. The electric conductivity increases because of high oxygen deficiency. Ironic relaxation polarization and crystallographic shear (CS) planes theory were used to explain the unusual dielectric characteristic of nanocrystalline tungsten trioxide.

Keywords: nanocrystalline tungsten trioxide electrical properties

Received: 25 September 2003
Revised: 24 March 2004
Accepted manuscript online:

PACS:	61.46.-w	(Structure of nanoscale materials)
	61.72.Ff	(Direct observation of dislocations and other defects (etch pits, decoration, electron microscopy, x-ray topography, etc.))
	61.72.Nn	(Stacking faults and other planar or extended defects)
	72.80.Jc	(Other crystalline inorganic semiconductors)
	81.40.Rs	(Electrical and magnetic properties related to treatment conditions)

Fund: Project supported by the National Natural Science Foundation of China (Grant No 50277015), and by the Natural Science Foundation of Hubei Province, China (Grant No 2002AB053).

Cite this article:

Yang Xin-Sheng (羊新胜), Wang Yu (王豫), Dong Liang (董亮), Qi Li-Zhen (齐立桢), Zhang Feng (张锋) Defect and electrical properties of nanocrystalline tungsten trioxide 2004 Chinese Physics 13 1516

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