Crystal-lattice modulation and phonon anomaly associated with strong p-f mixing effect of CeSb

K. Iwasa, A. Hannan, M. Kohgi, M. Braden, J. M. Mignot, H. Kitazawa, T. Suzuki

Research output: Contribution to journalArticle

Abstract

4f-electron states in unusual magnetically ordered phases of the low-carrier system CeSb have been investigated by X-ray diffraction and inelastic neutron scattering. Satellite peaks of the X-ray diffraction were found below TN = 17 K. The observed pattern is explained by a model based on the periodic stacking of the ordered Ce-ion planes with the Γ8-like p-f mixing state and the paramagnetic Γ7 planes. Thus, the 4f-electron orbital order is evidenced. Inelastic neutron scattering experiments show a new excitation with a phonon character appearing below TN. This excitation is thought to be a vibration mode changing the interatomic distance between the neighboring Ce and Sb ions forming the p-f mixing orbital.

Original languageEnglish
Pages (from-to)S1779-S1781
JournalApplied Physics A: Materials Science and Processing
Volume74
Issue numberSUPPL.II
DOIs
Publication statusPublished - 2002 Dec 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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    Iwasa, K., Hannan, A., Kohgi, M., Braden, M., Mignot, J. M., Kitazawa, H., & Suzuki, T. (2002). Crystal-lattice modulation and phonon anomaly associated with strong p-f mixing effect of CeSb. Applied Physics A: Materials Science and Processing, 74(SUPPL.II), S1779-S1781. https://doi.org/10.1007/s003390101272