Optimized negative thermal expansion induced by gradual intermetallic charge transfer in Bi1-xSbxNiO3

Takumi Nishikubo, Yuki Sakai, Kengo Oka, Masaichiro Mizumaki, Tetsu Watanuki, Akihiko Machida, Naoyuki Maejima, Shigenori Ueda, Takashi Mizokawa, Masaki Azuma

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    Abstract

    Negative thermal expansion (NTE) induced by intermetallic charge transfer between Bi5+ and Ni2+ was observed in Bi1-xSbxNiO3 (x = 0.05 and 0.10). Bi3+ and Bi5+ had a long-range ordering in the low-temperature phase of Bi0.95Sb0.05NiO3 while the ordering was short-range in Bi0.9Sb0.01NiO3. The latter compound exhibited a continuous NTE with a linear coefficient of thermal expansion (CTE) of αL = %106 ppmK%1 without temperature hysteresis in a wide temperature range of 200-320 K.

    Original languageEnglish
    Article number061102
    JournalApplied Physics Express
    Volume11
    Issue number6
    DOIs
    Publication statusPublished - 2018 Jun 1

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    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

    Cite this

    Nishikubo, T., Sakai, Y., Oka, K., Mizumaki, M., Watanuki, T., Machida, A., Maejima, N., Ueda, S., Mizokawa, T., & Azuma, M. (2018). Optimized negative thermal expansion induced by gradual intermetallic charge transfer in Bi1-xSbxNiO3 Applied Physics Express, 11(6), [061102]. https://doi.org/10.7567/APEX.11.061102