Abstract
Rare-earth hexaboride HoB6 shows a ferroquadrupole ordering of Oyz, Ozx and Oxy with ΓQ symmetry at TQ = 6.1 K accompanied by a structural change from cubic to trigonal. In order to examine the order parameter in HoB6, we have performed ultrasonic and thermal expansion measurements. The lattice length along [001] expands ΔL/L[001] = 2.5 × 10-4 just below TQ, while the length along [111] shrinks appreciably ΔL/L[111] = -4.5 × 10-3. This result confirms the cubic-trigonal distortion observed by neutron scattering experiments.
Original language | English |
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Pages (from-to) | 622-623 |
Number of pages | 2 |
Journal | Physica B: Condensed Matter |
Volume | 329-333 |
Issue number | II |
DOIs | |
Publication status | Published - 2003 May |
Keywords
- Fcrroquadrupole ordering
- HoB
- Thermal expansion
- Ultrasound
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering