Abstract
The low-temperature lattice effects of the Kondo compounds Ce xLa1-xB6 (x = 0.75 and 0.70) with a Γ8 ground state have been investigated by dilatometric measurements. In an ordered phase IV below TC = 1.6K (1.4K) for x = 0.75 (0.70), the lattice length along the [001] direction reveals an increase, while the length along the [111] direction shows an appreciable decrease. This lattice distortion is described in terms of the trigonal strain (εyz) = (εzx) = (εxy) ≠ 0 with Γ5 symmetry in addition to a volume expansion εB = εxx + εyy + εzz with full symmetry Γ1. The trigonal strain in phase IV indicates a ferro-quadrupole ordering of (Oyz) = (O zx) = (Oxy) ≠ 0.
| Original language | English |
|---|---|
| Pages (from-to) | 205-208 |
| Number of pages | 4 |
| Journal | journal of the physical society of japan |
| Volume | 72 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2003 Feb 1 |
Keywords
- CeLaB
- Quadrupole ordering
- Thermal expansion
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Cite this
Akatsu, M., Goto, T., Nemoto, Y., Suzuki, O., Nakamura, S., & Kunii, S. (2003). Trigonal lattice distortion and ferro-quadrupole ordering in phase IV of CexLa1-xB6 (x = 0.75 and 0.70). journal of the physical society of japan, 72(2), 205-208. https://doi.org/10.1143/JPSJ.72.205