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题名: Low-temperature magnetic and transport properties of layered SrxCoO2
作者: Guo, Y. Q. ;  Luo, J. L. ;  Liu, G. T. ;  Yang, H. X. ;  Li, J. Q. ;  Wang, N. L. ;  Jin, D. ;  Xiang, T.
刊名: PHYSICAL REVIEW B
出版日期: 2006
卷号: 74, 期号:15, 页码:-
关键词: THERMOELECTRIC PROPERTIES ;  SUPERCONDUCTIVITY ;  GAMMA-NAXCOO2 ;  NACO2O4 ;  COO2
学科分类: Physics
通讯作者: Luo, JL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: A series of polycrystalline samples of SrxCoO2 (0.15 <= x <= 0.40) have been prepared by a low-temperature ion exchange technique. These SrxCoO2 samples are isomorphic to NaxCoO2 with the hexagonal structure, but behave differently from NaxCoO2 with the change of cation concentration. For all the samples, the magnetic susceptibility decreases with increasing temperature and shows a Curie-Weiss behavior at high temperatures. The low-temperature magnetic susceptibility can be changed considerably by an applied field. The specific-heat coefficient gamma=C/T of SrxCoO2 as a function of T-2 turns downwards at low temperatures. This is different from the upturn behavior of low-temperature gamma in NaxCoO2. The resistivity of SrxCoO2 changes significantly with the strontium content x. An insulating to metallic crossover or transition is observed with increasing x.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000241723600069
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5889
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Guo, Y. Q.,Luo, J. L.,Liu, G. T.,et al. Low-temperature magnetic and transport properties of layered SrxCoO2[J]. PHYSICAL REVIEW B,2006,74(15):-.
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