Raman scattering of RB6 (R = Ca, Ce, Pr, Gd, Dy and Yb)

Norio Ogita, Shinji Nagai, Naoki Okamoto, Masayuki Udagawa, Fumitoshi Iga, Masafumi Sera, Jun Akimitsu, Satoru Kunii

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


In Raman scattering spectra of RB6, anomalous peaks have been found below 200 cm-1 for the R+3B6, except for phonons and CEF excitations. Their peak intensities decrease with decreasing temperature, and this temperature dependence correlates with that of the mean square displacement of R. Furthermore, their energies decrease with the increase of the cage size of B. This new excitation can be attributed to a local vibration of the R ion, which can be regarded as "rattler" in the cage of B.

Original languageEnglish
Pages (from-to)661-662
Number of pages2
JournalPhysica B: Condensed Matter
Issue numberII
Publication statusPublished - May 2003
Externally publishedYes


  • Raman scattering
  • Rare earth hexaboride
  • Rattling mode of rare-earth ion

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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