Formation of a three-dimensional network of v trimers in A2V13O22 (A=Ba, Sr)

J. Miyazaki, K. Matsudaira, Y. Shimizu, M. Itoh, Y. Nagamine, S. Mori, J. E. Kim, K. Kato, M. Takata, Takuro Katsufuji

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    We found that in A2V13O22 (A=Ba, Sr), which contains a trilayer slab of VO in the sodium-chloride structure with periodically missing ions, the trimerization of V ions occurs at 290 K (A=Ba) and 380 K (A=Sr). V trimers form a three-dimensional network, but some V ions remain untrimerized in these compounds. The suppression of magnetic susceptibility with trimerization and the existence of a Curie tail at low temperatures, together with the result of NMR measurement, indicate that the V trimers are spin singlet, whereas the untrimerized V ions have a magnetic moment; i.e., there is a spontaneous separation between nonmagnetic and magnetic ions in the crystal.

    Original languageEnglish
    Article number207201
    JournalPhysical Review Letters
    Issue number20
    Publication statusPublished - 2010 May 18


    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Miyazaki, J., Matsudaira, K., Shimizu, Y., Itoh, M., Nagamine, Y., Mori, S., Kim, J. E., Kato, K., Takata, M., & Katsufuji, T. (2010). Formation of a three-dimensional network of v trimers in A2V13O22 (A=Ba, Sr). Physical Review Letters, 104(20), [207201].