Chemical and physical pressure effects on the magnetic and transport properties of the A-Site ordered perovskite Sr3YCo4O 10.5

Shin Yoshida, Wataru Kobayashi, Tomohito Nakanoy, Ichiro Terasaki, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Inga Grigoraviciute, Maarit Karppinen, Hisao Yamauchi

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    We have measured and analysed the magnetization, resistivity and thermopower of polycrystalline samples of Ca-subsituted Sr3YCo 4O10.5. While the transition temperature and thermopower systematically decrease with increasing Ca content, the resistivity is nearly independent of the Ca-substitution level. We have furhter found that the substitution of Ca for Sr systematically decreases the lattice paremeters while maintaining the oxygen content unchanged, and have explained the Ca-substitution effects in terms of the spin-state transition induced by chemical pressure. We have also measured the magnetization of one of the samples under hydrostatic pressure. The result shows that the physicalpressure effect is semiquantitatively consistent with the chemical-pressure effect.

    Original languageEnglish
    Article number094711
    JournalJournal of the Physical Society of Japan
    Volume78
    Issue number9
    DOIs
    Publication statusPublished - 2009 Sep

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    pressure effects
    transport properties
    substitutes
    magnetic properties
    magnetization
    electrical resistivity
    hydrostatic pressure
    transition temperature
    oxygen

    Keywords

    • Magnetic order
    • Perovskite cobalt oxide
    • Pressure effects
    • Spin-state transition
    • Thermoelectric

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Chemical and physical pressure effects on the magnetic and transport properties of the A-Site ordered perovskite Sr3YCo4O 10.5. / Yoshida, Shin; Kobayashi, Wataru; Nakanoy, Tomohito; Terasaki, Ichiro; Matsubayashi, Kazuyuki; Uwatoko, Yoshiya; Grigoraviciute, Inga; Karppinen, Maarit; Yamauchi, Hisao.

    In: Journal of the Physical Society of Japan, Vol. 78, No. 9, 094711, 09.2009.

    Research output: Contribution to journalArticle

    Yoshida, S, Kobayashi, W, Nakanoy, T, Terasaki, I, Matsubayashi, K, Uwatoko, Y, Grigoraviciute, I, Karppinen, M & Yamauchi, H 2009, 'Chemical and physical pressure effects on the magnetic and transport properties of the A-Site ordered perovskite Sr3YCo4O 10.5', Journal of the Physical Society of Japan, vol. 78, no. 9, 094711. https://doi.org/10.1143/JPSJ.78.094711
    Yoshida, Shin ; Kobayashi, Wataru ; Nakanoy, Tomohito ; Terasaki, Ichiro ; Matsubayashi, Kazuyuki ; Uwatoko, Yoshiya ; Grigoraviciute, Inga ; Karppinen, Maarit ; Yamauchi, Hisao. / Chemical and physical pressure effects on the magnetic and transport properties of the A-Site ordered perovskite Sr3YCo4O 10.5. In: Journal of the Physical Society of Japan. 2009 ; Vol. 78, No. 9.
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    AU - Kobayashi, Wataru

    AU - Nakanoy, Tomohito

    AU - Terasaki, Ichiro

    AU - Matsubayashi, Kazuyuki

    AU - Uwatoko, Yoshiya

    AU - Grigoraviciute, Inga

    AU - Karppinen, Maarit

    AU - Yamauchi, Hisao

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    AB - We have measured and analysed the magnetization, resistivity and thermopower of polycrystalline samples of Ca-subsituted Sr3YCo 4O10.5. While the transition temperature and thermopower systematically decrease with increasing Ca content, the resistivity is nearly independent of the Ca-substitution level. We have furhter found that the substitution of Ca for Sr systematically decreases the lattice paremeters while maintaining the oxygen content unchanged, and have explained the Ca-substitution effects in terms of the spin-state transition induced by chemical pressure. We have also measured the magnetization of one of the samples under hydrostatic pressure. The result shows that the physicalpressure effect is semiquantitatively consistent with the chemical-pressure effect.

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