Zn2SnO4纳米线高压下的相变研究

沈希; 沈俊; 游淑洁; 杨留响; 唐玲云; 李延春; 刘景; 杨华; 周维亚; 靳常青; 等

doi:10.11858/gywlxb.2009.05.002

Zn2SnO4纳米线高压下的相变研究

doi: 10.11858/gywlxb.2009.05.002

1.
兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室，甘肃兰州 730050；
2.
中国科学院物理研究所北京凝聚态物理国家实验室，北京 100190；
3.
中国科学院高能物理研究所，北京 100039

详细信息

通讯作者:
沈希

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出版历程
- 收稿日期: 2009-03-25
- 修回日期: 2009-03-25
- 发布日期: 2009-10-15

Phase Transition of Zn2SnO4 Nanowires under High Pressure

1.
State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China;
2.
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

More Information

Corresponding author: SHEN Xi

摘要

摘要: 利用金刚石对顶压砧（DAC）对具有反尖晶石结构的透明导体氧化物Zn2SnO4（ZTO）纳米线进行了原位高压同步辐射角散X射线衍射（ADXRD）研究。结果发现：在压力为12.9 GPa附近，晶体的对称性降低，并发生晶体结构相变，产生中间过渡相；当压力为32.7 GPa时，发生高压相变，形成高压相。在样品加压前后，纳米线的形貌发生了很大的变化。通过Birch-Murnaghan方程，拟合得到B0=4时的体弹模量B0 =(168.69.7) GPa。
- Zn2SnO4（ZTO） /
- 反尖晶石结构 /
- 角散X射线衍射 /
- 体弹模量
Abstract: In situ high-pressure angle dispersive X-ray diffraction (ADXRD) experiments on inverse spinel Zn2SnO4 (ZTO) nanowires were carried out in a diamond anvil cell (DAC) at room temperature. The crystal symmetry becomes lower at around 12.9 GPa and an intermediate phase occurs. At about 32.7 GPa, a phase transition happens and a high-pressure phase appears. After high pressure treatment, the nanowires are broken into nanorods. Through fitting the Birch-Murnaghan equation, we obtained the bulk modulus B0=(168.69.7) GPa for the inverse spinel ZTO nanowires, assuming its first order derivative B0=4 at ambient pressure.
- Zn2SnO4(ZTO) /
- inverse spinel structure /
- ADXRD /
- bulk modulus

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参考文献(16)

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