巨磁阻材料Sr2CrWO6高压下的结构稳定性和电学特性

李建茹; 杨留响; 李杰; 禹日成; 李凤英; 鲍忠兴; 刘景; 靳常青

doi:10.11858/gywlxb.2005.04.018

巨磁阻材料Sr2CrWO6高压下的结构稳定性和电学特性

doi: 10.11858/gywlxb.2005.04.018

1.
中国科学院物理研究所，北京 100080；
2.
北京科技大学物理系，北京 100083；
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:
李建茹

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出版历程
- 收稿日期: 2004-10-26
- 修回日期: 2005-01-14
- 刊出日期: 2005-12-05

Structural Stability and Electrical Properties of CMR Material Sr2CrWO6 under High Pressure

1.
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;
2.
University of Science and Technology, Beijing 100083, China;
3.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

More Information

Corresponding author: LI Jian-Ru

摘要

摘要: 采用金刚石压砧高压装置，研究了双钙钛矿结构化合物Sr2CrWO6在室温下、34.5 GPa压力内的同步辐射X射线衍射谱，发现在9.6 GPa的压力点样品的结构有所变化。结合室温下20 GPa内电阻和电容随压力的变化，证明样品在9 GPa附近发生了晶体结构相变，而在2~5 GPa的压力范围内样品发生了电子结构相变。
- 同步辐射 /
- 双钙钛矿结构 /
- 磁电阻材料
Abstract: The spectra of energy dispersive X-ray diffraction with synchrotron radiation of double perovskite compound Sr2CrWO6 have been studied in situ high pressure pressure up to 34.5 GPa using a diamond anvil cell at room temperature. The experimental results indicate that the sample undergoes a crystal structural change at about 9 GPa. The resistance-pressure and capacitance-pressure relationships in the pressure range of 0~20 GPa show that there is an electronic structural change in Sr2CrWO6 in the pressure range of 2~5 GPa.
- synchrotron radiation /
- double perovskite /
- magnetoresistance material

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参考文献(9)

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