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Structural stability and electrical properties of the chain structure of Ca2CuO3 under high pressure
Zhang, GM; Mai, WJ; Li, FY; Bao, ZX; Yu, RC; Lu, TQ; Liu, J; Jin, CQ; Liu J(刘景)
2003
发表期刊PHYSICAL REVIEW B
卷号67期号:21页码:212102
通讯作者Chinese Acad Sci, Inst Phys, Beijing High Pressure Res Ctr, Beijing 100080, Peoples R China ; Jilin Univ, Dept Phys, Changchun 130023, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing High Pressure Res Ctr, Beijing 100039, Peoples R China
摘要In situ high-pressure energy dispersive x-ray-diffraction measurements on polycrystalline powder of Ca2CuO3 with a Cu-O chain structure have been performed in a diamond-anvil cell (DAC) instrument using synchrotron radiation. The resistance versus pressure and capacitance versus pressure relationships up to 20 GPa have been studied simultaneously using the DAC technique at room temperature. The results showed that the structure of Ca2CuO3 is stable under pressures up to 34 GPa. According to the Birch-Murnaghan equation of state, assuming B-0(')=4, the bulk modulus B-0=165.4+/-1.8 GPa has been obtained. It is found that the resistance decreases continuously with increasing pressure up to 20 GPa, however, a sharp drop in the pressure range of 1.8similar to6 GPa is observed. Meanwhile the capacitance increases all along with the pressure and displays a steep jump at the same pressure range in which the resistance rapidly changes. This metallization phenomenon may be ascribed to an electronic structure transition induced by the pressure.
文章类型Article
学科领域Physics
DOI10.1103/PhysRevB.67.212102
研究领域[WOS]Physics
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语种英语
WOS类目Physics, Condensed Matter
WOS记录号WOS:000184011100002
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被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/241031
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Zhang, GM,Mai, WJ,Li, FY,et al. Structural stability and electrical properties of the chain structure of Ca2CuO3 under high pressure[J]. PHYSICAL REVIEW B,2003,67(21):212102.
APA Zhang, GM.,Mai, WJ.,Li, FY.,Bao, ZX.,Yu, RC.,...&刘景.(2003).Structural stability and electrical properties of the chain structure of Ca2CuO3 under high pressure.PHYSICAL REVIEW B,67(21),212102.
MLA Zhang, GM,et al."Structural stability and electrical properties of the chain structure of Ca2CuO3 under high pressure".PHYSICAL REVIEW B 67.21(2003):212102.
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