高压下铁的电导率及X射线衍射研究

黄伟军; 崔启良; 毕延; 周强; 邹广田

doi:10.11858/gywlxb.2007.01.007

高压下铁的电导率及X射线衍射研究

doi: 10.11858/gywlxb.2007.01.007

1.
吉林大学超硬材料国家重点实验室，吉林长春 130012；
2.
中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621900

详细信息

通讯作者:
周强

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出版历程
- 收稿日期: 2006-03-24
- 修回日期: 2006-10-17
- 发布日期: 2007-03-05

Electrical Conductivity and X-Ray Diffraction Study of Iron under High Pressures

1.
National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
2.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China

More Information

Corresponding author: ZHOU Qiang

摘要

摘要: 用四点电极法及磁控溅射结合光刻集成电极的方法，测量了铁在25 GPa压力下的电阻随压力的变化；用微区X射线衍射仪原位测量了铁在25 GPa压力下晶胞参数随压力的变化关系。实验结果表明，铁在13.7 GPa时发生相变，由体心立方相转变为六方密堆相，在18.1 GPa时相变结束。利用高压下铁的电阻数据，结合X射线衍射结果，推导出铁的电导率随压力的变化关系。
- 铁 /
- 高压电导率 /
- DAC /
- 高压X射线衍射
Abstract: Four electrodes method and the magnetic sputter film deposition technique combined with photolithographic shaping method are used to measure the electrical resistance of iron up to 25 GPa. Furthermore, in-situ high pressure X-ray diffraction experiment was performed for measuring the lattice parameters of iron under high pressures up to 25 GPa. The experimental results indicated that the process of bcc-hcp phase transition of iron initiated at 13.7 GPa and finished at 18.1 GPa. The pressure dependence of electrical conductivity of iron was finally deduced from the resistance data and the X-ray diffraction results.
- iron /
- electrical conductivity /
- DAC high pressure /
- X-ray diffraction

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参考文献(15)

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