Determination of the crystal field levels in TmV2Al20

R. White; W. D. Hutchison; G. N. Iles; R. A. Mole; G. A. Stewart; J. M. Cadogan; T. Namiki; K. Nishimura

doi:10.1016/j.jallcom.2020.156184

Determination of the crystal field levels in TmV₂Al₂₀

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

^*Corresponding author for this work

Materials Design and Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

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 (Γ₅⁽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.

Original language	English
Article number	156184
Journal	Journal of Alloys and Compounds
Volume	845
DOIs	https://doi.org/10.1016/j.jallcom.2020.156184
State	Published - 2020/12/10

Keywords

Crystal field
Electron paramagnetic resonance
Heat capacity
Inelastic neutron scattering
Rare earth compound
Single crystal

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2020.156184

Cite this

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title = "Determination of the crystal field levels in TmV2Al20",

abstract = "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 (Γ5(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.",

keywords = "Crystal field, Electron paramagnetic resonance, Heat capacity, Inelastic neutron scattering, Rare earth compound, Single crystal",

author = "R. White and Hutchison, {W. D.} and Iles, {G. N.} and Mole, {R. A.} and Stewart, {G. A.} and Cadogan, {J. M.} and T. Namiki and K. Nishimura",

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year = "2020",

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day = "10",

doi = "10.1016/j.jallcom.2020.156184",

language = "英語",

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TY - JOUR

T1 - Determination of the crystal field levels in TmV2Al20

AU - White, R.

AU - Hutchison, W. D.

AU - Iles, G. N.

AU - Mole, R. A.

AU - Stewart, G. A.

AU - Cadogan, J. M.

AU - Namiki, T.

AU - Nishimura, K.

PY - 2020/12/10

Y1 - 2020/12/10

N2 - 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 (Γ5(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.

AB - 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 (Γ5(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.

KW - Crystal field

KW - Electron paramagnetic resonance

KW - Heat capacity

KW - Inelastic neutron scattering

KW - Rare earth compound

KW - Single crystal

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DO - 10.1016/j.jallcom.2020.156184

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