Raman Phonons and Ageing-Related Surface Disorder in NaxCoO2

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dc.creatorIliev, M. N.
dc.creatorLitvinchuk, A. P.
dc.creatorMeng, R. L.
dc.creatorSun, Y. Y.
dc.creatorCmaidalka, J.
dc.creatorChu, C. W.
dc.date2003-08-04
dc.date2003-10-16
dc.date.accessioned2026-07-07T02:52:46Z
dc.date.available2026-07-07T02:52:46Z
dc.descriptionThe polarized Raman spectra from ab and ac surfaces of single crystal NaxCoO2 (x~0.7), parent compound of recently discovered superconductor NaxCoO2.yH2O, are reported and discussed. The crystals were hexagon platelets of typical size 3x3x0.1 mm. Three of the five (A1g+E1g+3E2g) Raman active phonons were unambiguously identified at 458 (E1g), 494(E2g) and 574 (A1g) cm-1. The spectra from ab and ac surfaces differ significantly and provide evidence that within hours after preparation the ac surface, unlike the ab one, is strongly disordered. Within several days the disorder extends over the ab surface too.
dc.description4 pages, 1 table, 4 figures. Physica C (accepted 26 September 2003)
dc.identifierhttps://arxiv.org/abs/cond-mat/0308065
dc.identifierhttp://arxiv.org/abs/cond-mat/0308065
dc.identifierdoi:10.1016/j.physc.2003.09.085
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21962
dc.subjectSuperconductivity
dc.subjectDisordered Systems and Neural Networks
dc.subjectMaterials Science
dc.titleRaman Phonons and Ageing-Related Surface Disorder in NaxCoO2
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