| Structure properties for the superconductor MgCNi3 under high pressure with synchrotron radiation |
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| 作者姓名： | ZHANG Youlin LI Fengying CHEN Liangchen LIU Jing YU Richeng LIU Zhenxing YU Wen & JIN Changqing . Institute of Physics Chinese Academy of Sciences Beijing China . Beijing High Pressure Research Center Chinese Academy of Sciences Beijing China . |
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| 作者单位： | Zhang Youlin(Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;Beijing High Pressure Research Center, Chinese Academy of Sciences, Beijing 100080, China;Department of Physics, Beijing University of Science and Technology, Beijing 100083, China);Li Fengying,CHEN Liangchen,YU Richeng,LIU Zhenxing,Jin Changqing(Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;Beijing High Pressure Research Center, Chinese Academy of Sciences, Beijing 100080, China);LIU Jing(Beijing High Pressure Research Center, Chinese Academy of Sciences, Beijing 100080, China);YU Wen(Department of Physics, Beijing University of Science and Technology, Beijing 100083, China) |
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| 基金项目： | the Beijing Synchrotron Radiation Facility (BSRF)，国家自然科学基金 |
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| 摘 要： | The recent discovery of superconductivity at 39 K in the superconductor MgB21] shows that intermetallic compounds with simple structure types are worth serious reconsideration as sources of new superconducting mate-rials. Subsequent to this discovery, He et al. observed a new intermetallic superconductor MgCNi32] at about 8 K. The perovskite crystal structure for MgCNi3 is shown in Fig. 1, with the atomic positions: Mg: 1a (0,0,0), C: 1b (0.5,0.5,0.5) and Ni: 3c (0,0.5,0.5). This mater…
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| 关 键 词： | 超导体 MgCNi3 同步加速器 X-射线衍射 钙钛矿 |
Structure properties for the superconductor MgCNi_3 under high pressure with synchrotron radiation |
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| ZHANG Youlin,,,LI Fengying,,CHEN Liangchen,,LIU Jing,YU Richeng,,LIU Zhenxing,,YU Wen & JIN Changqing, . Institute of Physics,Chinese Academy of Sciences,Beijing ,China, . Beijing High Pressure Research Center,Chinese Academy of Sciences,Beijing ,China, ..Structure properties for the superconductor MgCNi3 under high pressure with synchrotron radiation[J].Chinese Science Bulletin,2003,48(21):2287-2289. |
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| Authors: | Zhang Youlin Li Fengying CHEN Liangchen LIU Jing YU Richeng LIU Zhenxing YU Wen Jin Changqing |
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| Institution: | e-mail: cqjin@ aphy.iphy.ac.cn |
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| Abstract: | In situ high pressure energy dispersive X-ray diffraction measurements on cubic-perovskite superconduc- tor MgCNi3 under pressure up to 22 GPa have been per-formed by using diamond anvil cell with synchrotron radia-tion. We have investigated its crystal structure and com-pressibility. The results show that the structure of MgCNi3 is stable under pressure up to 22 GPa. According to Birch- Murnaghan state equation, when we assume B0 = 4, we get B0 = 267.8 7.2 GPa. |
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| Keywords: | MgCNi3 superconductor synchrotron radiation high pressure energy dispersive X-ray diffraction |
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