Paramagnetic phase of a heavy-fermion compound, CeFePO, probed by< 57Fe mössbauer spectroscopy

研究成果: Article査読

6 被引用数 (Scopus)

抄録

57Fe Mössbauer spectroscopy was applied to an iron-based layered compound CeFePO. At temperatures from 9.4 to 293 K, no magnetic splitting was observed in the Mössbauer spectra of CeFePO indicating a paramagnetic phase of the Fe magnetic sublattice. All the spectra were fitted with a small quadrupole splitting, and the Debye temperature of CeFePO was found to be ∼448 K. The isomer shift at room temperature, 0.32 mm/s, was almost equal to those of LnFeAsO (Ln = La, Ce, Sm). Comparing s-electron density using the isomer shifts and unit cell volumes, it was found that the Fe of CeFePO has a similar valence state to other layered iron-based quaternary oxypnictides except LaFePO.

本文言語English
論文番号064714
ジャーナルJournal of the Physical Society of Japan
81
6
DOI
出版ステータスPublished - 2012 6

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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