| Defect and electrical properties of nanocrystalline tungsten trioxide |
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| 引用本文： | 羊新胜,王豫,董亮,齐立桢,张锋.Defect and electrical properties of nanocrystalline tungsten trioxide[J].中国物理 B,2004,13(9):1516-1519. |
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| 作者姓名： | 羊新胜 王豫 董亮 齐立桢 张锋 |
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| 作者单位： | Department of Physics, HuaZhong University of Science and Technology, Wuhan 430074, China |
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| 基金项目： | 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.
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| 关 键 词： | 纳米晶体 电学性质 三氧化钨 电子显微镜分析 X射线衍射分析 |
| 收稿时间： | 2003-09-25 |
Defect and electrical properties of nanocrystalline tungsten trioxide |
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| Yang Xin-Sheng,Wang Yu,Dong Liang,Qi Li-Zhen and Zhang Feng.Defect and electrical properties of nanocrystalline tungsten trioxide[J].Chinese Physics B,2004,13(9):1516-1519. |
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| Authors: | Yang Xin-Sheng Wang Yu Dong Liang Qi Li-Zhen and Zhang Feng |
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| Institution: | Department of Physics, HuaZhong University of Science and Technology, Wuhan 430074, China |
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| 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. |
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| Keywords: | nanocrystalline tungsten trioxide electrical properties |
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