Thermal phase transition of RbMnFe(CN)6 observed by X-ray emission and absorption spectroscopy

Hitoshi Osawa, Toshiaki Iwazumi, Hiroko Tokoro, Shin Ichi Ohkoshi, Kazuhito Hashimoto, Hironobu Shoji, Eiju Hirai, Tetsuya Nakamura, Susumu Nanao, Yasuhito Isozumi

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


The thermal phase transition of RbMnFe(CN)6 has been observed by Mn and Fe 3p-1s X-ray emission spectroscopy (XES) and 1s X-ray absorption spectroscopy (XAS). The thermal variations of the spin states and the valences of Mn and Fe were determined to be Mn2+(S=5/2)-NC-Fe3+(S=1/2) for the high-temperature (HT) phase and Mn3+(S=2)-NC-Fe2+(S=0) for the low-temperature (LT) phase. These transitions are thus caused by charge transfer between Mn and Fe. The temperature dependences of Mn and Fe 3p-1s XES and 1s XAS were observed as the composition of the spectra of the HT and LT phases. The ratios of the HT component in each spectrum show good agreement with the thermal transition curves observed with magnetic susceptibility measurements. Published by Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)237-241
Number of pages5
JournalSolid State Communications
Issue number5
Publication statusPublished - 2003 Feb
Externally publishedYes


  • A. Magnetically ordered materials
  • D. Electronic states (localized)
  • D. Phase transitions
  • E. Synchrotron radiation
  • E. X-ray spectroscopies

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


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