Effects of rock-salt layer on electronic and oxide ionic mixed conductivity in strontium titanate, SrO(SrTiO3)n (n = 1, 2, ∞)

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    Electronic conductivity and oxygen permeation properties of analogous compounds of SrO(SrTiO3)n (n = 1, 2) and SrTiO3 were investigated. Electronic conductivity and oxide ion conductivity decrease with increasing n, and SrTiO3 shows much higher conductivity. The effects of Co doping on oxide ion conductivity and electronic conductivity were also examined and it is observed that it is effective for increasing electrical conductivity and the oxygen permeation rate. Hall effect measurements suggests that the low electron-hole conductivity in Co-doped SrO(SrTiO3)n (n = 1, 2) can be assigned to a low mobility, which may result from the low electron and atomic density in the Sr-O rock-salt layer. Quantum mechanical calculations of the electron density also indicate low electron density in the rock-salt layer. This study reveals that the rock-salt layer consisting of Sr-O disturbs electron transfer in SrTiOX oxide and that the perovskite layer has much higher electronic and oxide ionic conductivity.

    Original languageEnglish
    Pages (from-to)315-321
    Number of pages7
    JournalSolid State Ionics
    Volume181
    Issue number5-7
    DOIs
    Publication statusPublished - Mar 11 2010

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

    Fingerprint

    Dive into the research topics of 'Effects of rock-salt layer on electronic and oxide ionic mixed conductivity in strontium titanate, SrO(SrTiO3)n (n = 1, 2, ∞)'. Together they form a unique fingerprint.

    Cite this