Crystal electric field excitations in the quasicrystal approximant studied by inelastic neutron scattering
- Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
- Univ. of Grenoble (France)
- Tokyo Univ. of Science, Noda (Japan). Dept. of Materials Science and Technology
Here, we have performed inelastic neutron scattering measurements on powder samples of the quasicrystal approximant, TbCd6, grown using isotopically enriched 112Cd. Both quasielastic scattering and distinct inelastic excitations were observed below 3 meV. The intensity of the quasielastic scattering measured in the paramag- netic phase diverges as TN ~ 22 K is approached from above. The inelastic excitations, and their evolution with temperature, are well characterized by the leading term, B$$0\atop{2}$$O$$0\atop{2}$$, of the crystalline electric field (CEF) level scheme for local pentagonal symmetry for the rare-earth ions [1] indicating that the Tb moment is directed primarily along the unique local pseudo-five-fold 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.
- Research Organization:
- Ames Lab., Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 1347911
- Alternate ID(s):
- OSTI ID: 1342977
- Report Number(s):
- IS-J 9240; PRBMDO; TRN: US1700874
- Journal Information:
- Physical Review B, Vol. 95, Issue 5; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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