You are here

Crystal electric field excitations in the quasicrystal approximant TbCd6 studied by inelastic neutron scattering

TitleCrystal electric field excitations in the quasicrystal approximant TbCd6 studied by inelastic neutron scattering
Publication TypeJournal Article
Year of Publication2017
AuthorsDas, P, Lory, PF, Flint, R, Kong, T, Hiroto, T, Bud'ko, SL, Canfield, PC, de Boissieu, M, Kreyssig, A, Goldman, AI
JournalPhysical Review B
Volume95
Pagination054408
Date Published02
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000393498000004
Keywordscd, icosahedral symmetry, order, penrose lattice, phase, physics, single-crystals, solution growth, zn
Abstract

We have performed inelastic neutron scattering measurements on powder samples of the quasicrystal approximant, TbCd6, grown using isotopically enriched Cd-112. Both quasielastic scattering and distinct inelastic excitations were observed below 3 meV. The intensity of the quasielastic scattering measured in the paramagnetic phase diverges as T-N similar to 22 K is approached from above. The inelastic excitations, and their evolution with temperature, are well characterized by the leading term, (B2O20)-O-0, of the crystal electric field (CEF) level scheme for local pentagonal symmetry for the rare-earth ions [S. Jazbec et al., Phys. Rev. B 93, 054208 (2016)] indicating that the Tb moment is directed primarily along the unique local pseudofivefold axis of the Tsai-type clusters. We also find good agreement between the inverse susceptibility determined from magnetization measurements using a magnetically diluted Tb0.05Y0.95Cd6 sample and that calculated using the CEF level scheme determined from the neutron measurements.

DOI10.1103/PhysRevB.95.054408
Custom 1

Corrrelations

Custom 2

Complex States

Alternate JournalPhys. Rev. B