XPS study of rare earth dodecaborides: TmB12, YbB12 and LuB12

F. Iga, Y. Takakuwa, T. Takahashi, M. Kasaya, T. Kasuya, T. Sagawa

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58 Citations (Scopus)


Single phase TmB12, YbB12 and LuB12 were successfully obtained by the arc-melting and floating zone methods. The XPS measurements of these compounds have indicated that (1) only YbB12 is a valence fluctuating compound with the valency of +2.9 at room temperature, (2) the correlation energy between Yb2+ and Yb3+ ions is about 6.0 eV, (3) Tm and Lu ions in the dodecaborides are in a trivalent state, and (4) the binding energy of the 4f level in TmB12 and LuB12 is 5.0 and 7.7 eV, respectively.

Original languageEnglish
Pages (from-to)903-905
Number of pages3
JournalSolid State Communications
Issue number10
Publication statusPublished - 1984 Jun


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