中国物理B ›› 2004, Vol. 13 ›› Issue (9): 1516-1519.doi: 10.1088/1009-1963/13/9/026

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Defect and electrical properties of nanocrystalline tungsten trioxide

羊新胜, 王豫, 董亮, 齐立桢, 张锋   

  1. Department of Physics, HuaZhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2003-09-25 修回日期:2004-03-24 出版日期:2005-06-21 发布日期:2005-06-21
  • 基金资助:
    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).

Defect and electrical properties of nanocrystalline tungsten trioxide

Yang Xin-Sheng (羊新胜), Wang Yu (王豫), Dong Liang (董亮), Qi Li-Zhen (齐立桢), Zhang Feng (张锋)   

  1. Department of Physics, HuaZhong University of Science and Technology, Wuhan 430074, China
  • Received:2003-09-25 Revised:2004-03-24 Online:2005-06-21 Published:2005-06-21
  • Supported by:
    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).

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摘要： 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.

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.

Key words: nanocrystalline, tungsten trioxide, electrical properties

中图分类号:  (Structure of nanoscale materials)

  • 61.46.-w
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)