Electronic phase diagram of the layered cobalt oxide system LixCoO2 (0.0≤x≤1.0)

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Motohashi, T.
dc.contributor.author Ono, T.
dc.contributor.author Sugimoto, Y.
dc.contributor.author Masubuchi, Y.
dc.contributor.author Kikkawa, S.
dc.contributor.author Kanno, R.
dc.contributor.author Karppinen, Maarit
dc.contributor.author Yamauchi, H.
dc.date.accessioned 2018-05-22T14:37:40Z
dc.date.available 2018-05-22T14:37:40Z
dc.date.issued 2009
dc.identifier.citation Motohashi , T , Ono , T , Sugimoto , Y , Masubuchi , Y , Kikkawa , S , Kanno , R , Karppinen , M & Yamauchi , H 2009 , ' Electronic phase diagram of the layered cobalt oxide system LixCoO2 (0.0≤x≤1.0) ' PHYSICAL REVIEW B , vol 80 , no. 16 , 165114 , pp. 1-9 . DOI: 10.1103/PhysRevB.80.165114 en
dc.identifier.issn 1098-0121
dc.identifier.issn 1550-235X
dc.identifier.other PURE UUID: 622a5636-e9d5-43b7-a2b7-850d37050f7f
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/electronic-phase-diagram-of-the-layered-cobalt-oxide-system-lixcoo2-00x10(622a5636-e9d5-43b7-a2b7-850d37050f7f).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/14768593/PhysRevB.80.165114.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/30941
dc.description.abstract Here we report the magnetic properties of the layered cobalt oxide system, LixCoO2, in the whole range of Li composition, 0≤x≤1. Based on dc-magnetic-susceptibility data, combined with results of 59Co nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) observations, the electronic phase diagram of LixCoO2 has been established. As in the related material NaxCoO2, a magnetic critical point is found to exist between x=0.35 and 0.40, which separates the Pauli-paramagnetic and Curie-Weiss metals. In the Pauli-paramagnetic regime (x≤0.35), the antiferromagnetic spin correlations systematically increase with decreasing x. Nevertheless, CoO2, the x=0 end member is a noncorrelated metal in the whole temperature range studied. In the Curie-Weiss regime (x≥0.40), on the other hand, various phase transitions are observed. For x=0.40, a susceptibility hump is seen at 30 K, suggesting the onset of static antiferromagnetic order. A magnetic jump, which is likely to be triggered by charge ordering, is clearly observed at Tt≈175 K in samples with x=0.50 (=1/2) and 0.67 (=2/3), while only a tiny kink appears at T≈210 K in the sample with an intermediate Li composition, x=0.60. Thus, the phase diagram of the LixCoO2 system is complex and the electronic properties are sensitively influenced by the Li content (x). en
dc.format.extent 1-9
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PHYSICAL REVIEW B en
dc.relation.ispartofseries Volume 80, issue 16 en
dc.rights openAccess en
dc.subject.other 116 Chemical sciences en
dc.title Electronic phase diagram of the layered cobalt oxide system LixCoO2 (0.0≤x≤1.0) en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Chemistry en
dc.subject.keyword 116 Chemical sciences
dc.identifier.urn URN:NBN:fi:aalto-201805222381
dc.identifier.doi 10.1103/PhysRevB.80.165114
dc.type.version publishedVersion

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