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Low-temperature magnetic and transport properties of layered SrxCoO2
Guo, Y. Q.; Luo, J. L.; Liu, G. T.; Yang, H. X.; Li, J. Q.; Wang, N. L.; Jin, D.; Xiang, T.; Luo, JL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China
2006
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号74期号:15页码:-
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.
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
关键词Thermoelectric Properties Superconductivity Gamma-naxcoo2 Naco2o4 Coo2
学科领域Physics
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收录类别SCI
WOS记录号WOS:000241723600069
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5889
专题理论物理所1978-2010年知识产出
通讯作者Luo, JL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China
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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):-.
APA Guo, Y. Q..,Luo, J. L..,Liu, G. T..,Yang, H. X..,Li, J. Q..,...&Luo, JL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China.(2006).Low-temperature magnetic and transport properties of layered SrxCoO2.PHYSICAL REVIEW B,74(15),-.
MLA Guo, Y. Q.,et al."Low-temperature magnetic and transport properties of layered SrxCoO2".PHYSICAL REVIEW B 74.15(2006):-.
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