Spontaneous strain due to ferroquadrupolar ordering in UCu${}_2$Sn

Isao Ishii, Haruhiro Higaki, Kenichi Katoh +4

The ternary uranium compound UCu${}_2$Sn with a hexagonal ZrPt${}_2$Al-type structure shows a phase transition at 16 K. We reported previously that huge lattice-softening is accompanie…