2011/08/18 by Taku J Sato, T. Sato, Soshi Ibuka +5 · 98 citations
Chemistry · Materials Science · Physics and Astronomy · #Atomic physics #Bioinformatics #Chemistry #Condensed matter physics #Crystallography #Degeneracy (biology) #Excited state #Ground state #Magnetic Properties of Alloys #Magnetic and transport properties of perovskites and related materials #Phase transition #Physics #Rare-earth and actinide compounds #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.86.184419
published in Physical Review B 86(18) (American Physical Society) · 7pages, 7 figure, and 1 table, submitted to PRB
arxiv created 2011/08/18 · openalex publication_date 2012/11/16 · arxiv updated 2013/05/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The origin of the nonmagnetic phase transition in PrTi2Al20, reported earlier in a macroscopic study, has been asserted microscopically using elastic and inelastic neutron scattering techniques. It has been shown spectroscopically that the crystalline-electric-field ground state is a nonmagnetic \ensuremathΓ3 doublet, whereas the excited states are two triplets (\ensuremathΓ4 and \ensuremathΓ5) and a singlet (\ensuremathΓ1). The diffraction experiment under external magnetic field shows that the nonmagnetic transition is indeed ferroquadrupolar ordering, which takes place as a consequence of cooperative removal of the ground-state-doublet degeneracy. It is therefore concluded that PrTi2Al20 is another rare example of Pr compounds exhibiting nonmagnetic quadrupolar order.