Abstract
Field–temperature phase diagrams of cubic compounds PrPb3 and PrOs4Sb12with non-magnetic crystalline electric field (CEF) ground state have beenexamined by means of low-temperature magnetization measurements. PrPb3 is atypical Γ3doublet CEF ground state system which undergoes an antiferro-quadrupole(AFQ) transition at TQ = 0.4 K. In a magnetic fieldTQ(H)exhibits re-entrant behaviour depending on the field direction, which can beinterpreted in terms of interactions between induced dipole (and possibly octupole)moments in the AFQ phase. In the heavy-electron superconductor PrOs4Sb12,a field-induced ordered state has been observed above 4 T for allthe principal directions. The results are in favour of a Γ1CEF ground state model in which a level crossing with a Γ5triplet excited state induces a long-range (possibly quadrupolar) ordering in amagnetic field.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
