不同粒径纳米晶硫化锌的高压结构相变研究

潘跃武; 于杰; 崔启良; 高春晓; 邹广田; 刘景

doi:10.11858/gywlxb.2007.01.005

不同粒径纳米晶硫化锌的高压结构相变研究

doi: 10.11858/gywlxb.2007.01.005

1.
哈尔滨工业大学深圳研究生院材料科学与工程学科部，广东深圳 518055；
2.
吉林大学超硬材料国家重点实验室，吉林长春 130012；
3.
中国科学院高能物理研究所同步辐射实验室，北京 100039

详细信息

通讯作者:
潘跃武

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出版历程
- 收稿日期: 2006-03-02
- 修回日期: 2006-06-13
- 发布日期: 2007-03-05

Synchrotron Radiation of Different Nano Size ZnS Nanocrystalline under High Pressure Induced

1.
Department of Material Science & Engineering, Harbin Institute of Technology, Shenzhen Graduate School, Shenzhen 518055, China;
2.
National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
3.
Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

More Information

Corresponding author: PAN Yue-Wu

摘要

摘要: 应用原位能量色散X射线散射和金刚石对顶砧技术，对纳米晶ZnS进行了高压结构相变研究。初始相为纤锌矿结构的10 nm和3 nm硫化锌分别在16.0 GPa和16.7 GPa时转变为岩盐矿结构，相变压力均高于纤锌矿结构的体材料硫化锌。该相变为一可逆的结构相变。应用大型科学计算软件Materials Studio（MS）计算了纳米晶ZnS的状态方程，根据Birch-Murnaghan方程拟合了纳米晶ZnS的零压体模量，得到的零压体模量高于相应体材料的零压体模量，表明纳米晶ZnS较难压缩。
- 同步辐射 /
- 纳米晶硫化锌 /
- 高压 /
- 结构相变
Abstract: In-situ energy dispersive X-ray diffraction (EDXD) on ZnS nanocrystalline was carried out under high pressure by using a diamond anvil cell (DAC). Phase transition of nano ZnS from wurtzite to rocksalt occurred at 16.0 GPa and 16.7 GPa for 10 nm and 3 nm sample, respectively, which were higher than that of the bulk materials. The structures of ZnS nanocrystalline at different pressures are built by using Materials Studio (MS) and the bulk modulus and the pressure derivative of ZnS nanocrystalline were derived by fitting the equation of Birch-Murnaghan. The resulting modulus was higher than that of the corresponding bulk material, indicating that nanomaterial possesses higher hardness than its bulk materials.
- synchrotron radiation /
- nanocrystalline ZnS /
- high pressure /
- structure phase transition

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