Unusual phase boundary of the magnetic-field-tuned valence transition in CeOs${}_4$Sb${}_{12}$

K. Götze, M. J. Pearce, P. A. Goddard +8

The phase diagram of the filled skutterudite CeOs${}_4$Sb${}_{12}$ has been mapped in fields $H$ of up to 60 T and temperatures $T$ down to 0.5 K using resistivity, magnetostriction, a…