Nano-block integration in the misfit layered Co oxides

I. Terasaki, Wataru Kobayashi, S. Ishiwata

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    The layered cobalt oxides having the CdI2-type hexagonal CoO2 layer exhibit good thermoelectric properties especially at high temperatures. Above all, the misfit layered Co oxides [A2M nO2+n-d]yCoO2 are of particular interest, in which the CoO2 layer and the NaCl-type tetragonal block-layer stack alternately along the crystallographic c axis. We prepared single crystals for various kinds of misfit layered Co oxide, and measured the thermoelectric properties to investigate how the block layer affects the electronic states of the CoO2 layer. We found that the room-temperature thermopower monotonically increases with the misfit ratio y, which we associated with short-ranged spin-density-wave modulated by the interfacial stress between the layers.

    Original languageEnglish
    Title of host publicationProceedings ICT'06 - 25th International Conference on Thermoelectrics
    Pages283-286
    Number of pages4
    DOIs
    Publication statusPublished - 2006
    EventICT'06 - 25th International Conference on Thermoelectrics - Vienna, Austria
    Duration: 2006 Aug 62006 Aug 10

    Other

    OtherICT'06 - 25th International Conference on Thermoelectrics
    CountryAustria
    CityVienna
    Period06/8/606/8/10

    ASJC Scopus subject areas

    • Engineering(all)

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