纳米ZnO在高压下的性质与结构研究

武振羽; 曹立; 鲍忠兴; 柳翠霞; 李前树; 邹炳锁

doi:10.11858/gywlxb.2003.01.007

纳米ZnO在高压下的性质与结构研究

doi: 10.11858/gywlxb.2003.01.007

1.
北京理工大学化工与材料学院，北京 100081；
2.
中国科学院物理研究所，北京 100080；
3.
中国科学院国际材料物理中心，辽宁沈阳 110015

详细信息

通讯作者:
武振羽

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出版历程
- 收稿日期: 2002-04-28
- 修回日期: 2002-09-02
- 发布日期: 2003-03-05

The Properties and Structural Investigation of ZnO Nanocrystals under Pressure

1.
School of Chemical Engineering and Materials Science, Beijing Institute of Technology, Beijing 100081, China;
2.
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;
3.
International Materials Centre, Chinese Academy of Sciences, Shenyang 110015, China

More Information

Corresponding author: WU Zhen-Yu

摘要

摘要: 在金刚石压砧上测量了20 nm的ZnO和体相粉末ZnO的电阻-压力关系。研究结果表明，20 nm的ZnO在7.9 GPa 压力时出现了相变，而体相粉末ZnO在5 GPa 时有相变发生。虽然粒径小的相变压力大于粒径大的，但与以前关于体相粉末ZnO所报道的文献结果有所不同。文中对此作了解释，并对纳米ZnO在压力下的畴破裂进行了研究。
- 相转变 /
- 金刚石压砧 /
- 高压 /
- 纳米晶
Abstract: The R-p relationship of ZnO nanocrystals and bulk materials were determined by diamond anvil cell (DAC). Research results show that a phase transformation begins at the 7.9 GPa when the particle is 20 nm nanocrystals, whereas the phase transition of ZnO bulk materials at 5 GPa. The smaller particle has larger phase transition pressure, and transformation pressure of bulk materials determined by DAC is lower than that previously reported. The structural properties of ZnO were discussed, and the domain fracture of nanocrystals under pressure was investigated.
- phase transition /
- DAC /
- high pressure /
- nanocrystals

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参考文献(19)

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