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The high-pressure synthesis and in situ property of the infinite-layer CaCuO2
Qin, XM; Liu, QQ; Yu, Y; Yang, L; Liu, J; Jin, CQ; Liu J(刘景)
2005
发表期刊PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
卷号426期号:1页码:510-514
通讯作者Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article; Proceedings Paper
摘要The infinite-layer CaCuO2, (IL CaCuO2) was synthesized at similar to 1000 degrees C and 3 GPa, and structural and electrical properties under high-pressure were studied at room temperature using a diamond anvil cell (DAC) by in situ high-pressure energy-dispersive X-ray diffraction with synchrotron radiation and by electrical measurements, respectively. The results reveal that the primary crystal structure of IL CaCuO2 is stable under pressure up to 30 GPa. The equation of state of IL CaCuO2 was obtained from the VIVO-P relationship, which gives rise to a bulk modulus B-0 = 181 GPa for IL CaCuO2 based on the Birch-Murnaghan equation. The resistance and capacitance measurements of IL CaCuO2 UP to 20 GPa indicate that there is an abnormal hump occurring around 10 GPa with increasing pressure. Corresponding changes were also observed in the dependence of capacitance on pressure. It is considered to be related to an electronic structure transition resulting from the anisotropic compression of the IL CaCuO2 unit cell under high pressure, which can be attributed to the sudden disappearance of an X-ray diffraction peak. (c) 2005 Elsevier B.V. All rights reserved.
关键词infinite-layer CaCuO2 high-pressure energy-dispersive X-ray diffraction in situ high-pressure electrical properties
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1016/j.physc.2005.01.040
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Applied
WOS记录号WOS:000232698500103
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237765
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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Qin, XM,Liu, QQ,Yu, Y,et al. The high-pressure synthesis and in situ property of the infinite-layer CaCuO2[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,2005,426(1):510-514.
APA Qin, XM.,Liu, QQ.,Yu, Y.,Yang, L.,Liu, J.,...&刘景.(2005).The high-pressure synthesis and in situ property of the infinite-layer CaCuO2.PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,426(1),510-514.
MLA Qin, XM,et al."The high-pressure synthesis and in situ property of the infinite-layer CaCuO2".PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 426.1(2005):510-514.
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