Large magnetostriction and complex phase transition in UNiSn
Review articleOpen access

AbstractIn high magnetic fields, magnetostriction in UNiSn is found to be remarkably enhanced with a sharp peak at a temperature TQ higher than the antiferromagnetic transition temperature TN. The pronounced volume reduction in magnetic fields below TQ suggests that the lattice deformation results from ferro-quadrupolar ordering of 5f-electron orbits. The competition between magnetic ordering and lattice instability is essential for the complex phase transition in UNiSn at 43 K.

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