X-ray diffraction study on thermal properties of crystal lattices in CeP and CeAs

Kazuaki Iwasa, Masahumi Kohgi, Hiroyuki Ohsumi, Keisuke Tajima, Tetsuya Takeuchi, Yoshinori Haga, Akihiro Uesawa, Takashi Suzuki

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


X-ray diffraction studies at low temperatures have been performed in order to investigate thermal properties of crystal lattices in the low-carrier-density systems cerium monopnictides. CeP and CeAs show large crystal-lattice contractions with increasing temperatures up to about 120 K and 90 K, respectively. Due to the strong p-f mixing, the excited crystal field Γ8-like state is expected to produce a shorter interatomic bond length between cerium ions and neighboring pnictogens than that realized by the Γ7 ground state. The experimental results of the lattice contractions at low temperatures are explained by the thermal average of these crystal field states.

Original languageEnglish
Pages (from-to)881-886
Number of pages6
Journaljournal of the physical society of japan
Issue number3
Publication statusPublished - 1999 Mar
Externally publishedYes


  • CeAs
  • CeP
  • Lattice constant
  • Low-carrier-density system
  • X-ray diffraction
  • p-f mixing

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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