Pressure-induced metallization and structural transition of alpha-monoclinic and amorphous Se

被引:23
作者
Akahama, Y
Kobayashi, M
Kawamura, H
机构
[1] Department of Material Science, Faculty of Science, Himeji Institute of Technology, 479-1, Kanaji, Kamigohri
来源
PHYSICAL REVIEW B | 1997年 / 56卷 / 09期
关键词
D O I
10.1103/PhysRevB.56.5027
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Electrical resistance measurements and x-ray-diffraction experiments have been carried out under high pressure for alpha-monoclinic and amorphous and trigonal Se. alpha-monoclinic Se showed a transition to the metallic state at 12 GPa, which was considerably lower than 23 GPa of trigonal Se, Corresponding to the metallization, a structural transition to a high-pressure phase which could not be explained by any metallic phase of Se reported previously was observed in alpha-monoclinic Se, in amorphous Se, crystallization was observed at 12 GPa. The diffraction pattern after crystallization was explained as the coexistence of the high-pressure phase and trigonal Se. These results have established the double nature of the sequence of the structure in the pressure-induced phase transition of Se.
引用
收藏
页码:5027 / 5031
页数:5
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