Abstract
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 language | English |
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Pages (from-to) | 881-886 |
Number of pages | 6 |
Journal | journal of the physical society of japan |
Volume | 68 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1999 Mar |
Externally published | Yes |
Keywords
- CeAs
- CeP
- Lattice constant
- Low-carrier-density system
- X-ray diffraction
- p-f mixing
ASJC Scopus subject areas
- Physics and Astronomy(all)