| 多晶VO_2材料的绝缘-金属转变研究 |
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| 引用本文： | 朱津裘,张进修,罗裕基,郑臣谋.多晶VO_2材料的绝缘-金属转变研究[J].中山大学学报论丛,1992(2). |
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| 作者姓名： | 朱津裘 张进修 罗裕基 郑臣谋 |
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| 作者单位： | 中山大学物理学系，中山大学物理学系，中山大学化学系，中山大学化学系 |
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| 摘 要： | 对用粉末冶金(烧结)法制得的多晶VO_2材料进行了X-射线结构分析和R-T曲线的实验研究.结果表明,纯的VO_2多晶材料升温时在338K发生数量级约为10~3倍的绝缘-金属转变,掺杂Cr的VO_2样品转变温度向低温方向偏移。当样品中含有5％以上的V_2O_5或样品淬油时,其R-T曲线将变得平坦.
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| 关 键 词： | 烧结 相变 多晶二氧化钒 |
Study on Insulator-Metal Phase Transition in VO_2 Polycrystalline Materials |
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| Zhu Jinqiu,Zhang Jinxiu,Luo Yuji,Zheng Chenmou.Study on Insulator-Metal Phase Transition in VO_2 Polycrystalline Materials[J].Supplement to the Journal of Sun Yatsen University,1992(2). |
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| Authors: | Zhu Jinqiu Zhang Jinxiu Luo Yuji Zheng Chenmou |
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| Institution: | Zhu Jinqiu;Zhang Jinxiu;Luo Yuji;Zheng Chenmou Department of Physics |
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| Abstract: | VO_2 polycrystalline specimens have been prepared by powder metallurgy (sintering) method. The X-ray structural analysis and the measurement of the R-T curve on specimens has been carried out. The results show that the insulator --metal transition of pure VO_2 specimens is observed at about 338K with increasing temperature, but the VO_2 specimens doped with Cr transit at the temperature lower than about 338K. If the content of V_2O_5 in specimens >5 % or after quenching in oil, the R-T curve of specimens will be plane. |
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| Keywords: | sintering phase transition VO_2 Polycrystal |
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