Determination of the crystal field levels in TmV2Al20

JOURNAL OF ALLOYS AND COMPOUNDS

卷:845

Article

White, R.¹  Hutchison, W. D.¹  Iles, G. N.^2,3  Mole, R. A.²  Stewart, G. A.¹  Cadogan, J. M.¹  Namiki, T.⁴  Nishimura, K.⁴ 

[1] Univ New South Wales, Sch Sci, Canberra, ACT 2600, Australia

[2] Australian Nucl Sci & Technol Org, Australian Ctr Neutron Scattering, Kirrawee Dc, NSW 2232, Australia

[3] RMIT Univ, Sch Sci, Melbourne, Vic 3000, Australia

[4] Univ Toyama, Grad Sch Sci & Engn, Toyama 9308555, Japan

关键词: Rare earth compound;    Single crystal;    Crystal field;    Inelastic neutron scattering;    Electron paramagnetic resonance;    Heat capacity;   

DOI  :  10.1016/j.jallcom.2020.156184

来源: Elsevier

【 摘 要 】

Analysis of inelastic neutron scattering data recorded for the rare earth intermetallic compound TmV2Al20 yields a cubic crystal field Hamiltonian with parameters x = -0.63(1) and W = +0.43(1) K (Lea, Leask & Wolf notation). This result is supported by a strong electron paramagnetic resonance signal that is consistent with magnetic splitting of the first excited (T-5((1))) state. Using this crystal field Hamiltonian, single crystal magnetisation and specific heat data are then interpreted in terms of a model that involves partial Al flux substitution of an approximately 10% depleted Tm cage site. (C) 2020 Elsevier B.V. All rights reserved.

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