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Giant Dielectric Anomaly of a Metal–Organic Perovskite with Four-Membered Ring Ammonium Cations

Authors

  • Dr. Biao Zhou,

    1. Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui, Sekagaya-ku, Tokyo 156-8550 (Japan)
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  • Yuji Imai,

    1. Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui, Sekagaya-ku, Tokyo 156-8550 (Japan)
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  • Prof. Akiko Kobayashi,

    Corresponding author
    1. Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui, Sekagaya-ku, Tokyo 156-8550 (Japan)
    • Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui, Sekagaya-ku, Tokyo 156-8550 (Japan)
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  • Prof. Zhe-Ming Wang,

    1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
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  • Prof. Hayao Kobayashi

    Corresponding author
    1. Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui, Sekagaya-ku, Tokyo 156-8550 (Japan)
    • Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui, Sekagaya-ku, Tokyo 156-8550 (Japan)
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  • This work was financially supported by Grants-in-Aid for Scientific Research (B) (No. 20350069), Young Scientists (B) (No. 21750153), and Innovative Areas (20110003) from the Ministry of Education, Culture, Sports, Science and Technology of Japan. The study was also supported by the “Strategic Research Base Development” Program for Private Universities subsidized by MEXT (2009) (S0901022). The authors thank Mr. Y. Karatsu (Fuso-Seishakusho Co.) for the construction of the instruments for dielectric measurements and useful discussions.

Abstract

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Ungewöhnliche Kationen: Ein Metall-organischer Perowskit mit Azetidinium-Kationen (siehe Struktur) zeigt ein sehr breites und beispiellos starkes dielektrisches Signal nahe 280 K. Eine Faltbewegung der viergliedrigen cyclischen Ammoniumionen könnte entscheidend zum Wechsel der Gittersymmetrie und zu der außergewöhnlichen dielektrischen Anomalie beitragen.

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