Isostructural Transition of MgB2 Under High Pressure

SUN Li-Ling; WU Qi; ZHAN Zai-Ji; WANG Wen-Kui; WANG Wen-Kui; T.Kikegawa

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Isostructural Transition of MgB2 Under High Pressure

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The high-pressure behaviour of the superconductor MgB2 with a hexagonal structure has been investigated by rnthe in situ synchrotron radiation x-ray diffraction method under pressures up to 42.2 GPa in a diamond anvil rncell. An abrupt decrease of about 7％ in the unit cell volume of this material occurs in the pressure range of rn26.3-30.2 GPa. A split of the Raman spectrum was also observed. The jump of the compression curve and rnRaman spectrum are ascribed to an isostructural transition in MgB2 at a pressure of 30.2 GPa.

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《中国物理快报：英文版》 |2001年第10期|1401-1403|共3页
作者
SUN Li-Ling; WU Qi; ZHAN Zai-Ji; WANG Wen-Kui; WANG Wen-Kui; T.Kikegawa;
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Laboratory of Extreme Condition Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080rn;

Laboratory of Extreme Condition Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080rn;

Laboratory of Extreme Condition Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080rn;

College of Material Science and Chemical Engineering, Yanshan University, Qinhuangdao 066004;

Laboratory of Extreme Condition Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080rn;

Laboratory of Extreme Condition Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080;

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中图分类物理学;
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Isostructural Transition of MgB2 Under High Pressure

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