Crystal-field excitations and model calculations of CeTe2

Z. S. Liu; J. G. Park; Y. S. Kwon; K. A. McEwen; M. J. Bull

doi:10.1016/S0304-8853(02)00443-2

Crystal-field excitations and model calculations of CeTe₂

Z. S. Liu, J. G. Park, Y. S. Kwon, K. A. McEwen, M. J. Bull

Department of Physics and Chemistry

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

7 Scopus citations

Abstract

We have observed in recent inelastic neutron scattering experiments that CeTe₂ exhibits two well-defined crystal-field excitations centered at 8 and 18.5meV above the ground crystal-field level, respectively, and another one at 280meV which is attributed to the ²F_5/2 → ²F_7/2 intermultiplet transition. These experimental findings clearly demonstrate that the Ce 4f electrons in CeTe₂ are localized. Using crystal-field parameters obtained from the analysis of the crystal-field excitations, we have used a single-ion crystal-field model with mean-field approximation to calculate magnetization and heat capacity both with and without external fields, and have obtained results that are in good agreement with the experimental data.

Original language	English
Pages (from-to)	151-157
Number of pages	7
Journal	Journal of Magnetism and Magnetic Materials
Volume	256
Issue number	1-3
DOIs	https://doi.org/10.1016/S0304-8853(02)00443-2
State	Published - Jan 2003

Bibliographical note

Funding Information:
We acknowledge Drs. D.T. Adroja and P. Santini for helpful discussions. One of us (Z.S.L.) is supported by the Brain Korea 21 program of Ministry of Education and the Center for Strongly Correlated Electron Materials Research of Seoul National University. J.G.P. acknowledges Korea Research Foundation (Grant No. KRF-2000-015-DP0111), the Korea–UK collaborative research program and the Nuclear R&D program of the MOST for financial support.

Keywords

Crystal-field model
Heat capacity
Inelastic neutron scattering
Magnetization
Mean-field approximation

Access to Document

10.1016/S0304-8853(02)00443-2

Cite this

@article{49eaefd48a3b407eb43b5c6841185fb3,

title = "Crystal-field excitations and model calculations of CeTe2",

abstract = "We have observed in recent inelastic neutron scattering experiments that CeTe2 exhibits two well-defined crystal-field excitations centered at 8 and 18.5meV above the ground crystal-field level, respectively, and another one at 280meV which is attributed to the 2F5/2 → 2F7/2 intermultiplet transition. These experimental findings clearly demonstrate that the Ce 4f electrons in CeTe2 are localized. Using crystal-field parameters obtained from the analysis of the crystal-field excitations, we have used a single-ion crystal-field model with mean-field approximation to calculate magnetization and heat capacity both with and without external fields, and have obtained results that are in good agreement with the experimental data.",

keywords = "Crystal-field model, Heat capacity, Inelastic neutron scattering, Magnetization, Mean-field approximation",

author = "Liu, {Z. S.} and Park, {J. G.} and Kwon, {Y. S.} and McEwen, {K. A.} and Bull, {M. J.}",

note = "Funding Information: We acknowledge Drs. D.T. Adroja and P. Santini for helpful discussions. One of us (Z.S.L.) is supported by the Brain Korea 21 program of Ministry of Education and the Center for Strongly Correlated Electron Materials Research of Seoul National University. J.G.P. acknowledges Korea Research Foundation (Grant No. KRF-2000-015-DP0111), the Korea–UK collaborative research program and the Nuclear R&D program of the MOST for financial support.",

year = "2003",

month = jan,

doi = "10.1016/S0304-8853(02)00443-2",

language = "English",

volume = "256",

pages = "151--157",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Crystal-field excitations and model calculations of CeTe2

AU - Liu, Z. S.

AU - Park, J. G.

AU - Kwon, Y. S.

AU - McEwen, K. A.

AU - Bull, M. J.

N1 - Funding Information: We acknowledge Drs. D.T. Adroja and P. Santini for helpful discussions. One of us (Z.S.L.) is supported by the Brain Korea 21 program of Ministry of Education and the Center for Strongly Correlated Electron Materials Research of Seoul National University. J.G.P. acknowledges Korea Research Foundation (Grant No. KRF-2000-015-DP0111), the Korea–UK collaborative research program and the Nuclear R&D program of the MOST for financial support.

PY - 2003/1

Y1 - 2003/1

N2 - We have observed in recent inelastic neutron scattering experiments that CeTe2 exhibits two well-defined crystal-field excitations centered at 8 and 18.5meV above the ground crystal-field level, respectively, and another one at 280meV which is attributed to the 2F5/2 → 2F7/2 intermultiplet transition. These experimental findings clearly demonstrate that the Ce 4f electrons in CeTe2 are localized. Using crystal-field parameters obtained from the analysis of the crystal-field excitations, we have used a single-ion crystal-field model with mean-field approximation to calculate magnetization and heat capacity both with and without external fields, and have obtained results that are in good agreement with the experimental data.

AB - We have observed in recent inelastic neutron scattering experiments that CeTe2 exhibits two well-defined crystal-field excitations centered at 8 and 18.5meV above the ground crystal-field level, respectively, and another one at 280meV which is attributed to the 2F5/2 → 2F7/2 intermultiplet transition. These experimental findings clearly demonstrate that the Ce 4f electrons in CeTe2 are localized. Using crystal-field parameters obtained from the analysis of the crystal-field excitations, we have used a single-ion crystal-field model with mean-field approximation to calculate magnetization and heat capacity both with and without external fields, and have obtained results that are in good agreement with the experimental data.

KW - Crystal-field model

KW - Heat capacity

KW - Inelastic neutron scattering

KW - Magnetization

KW - Mean-field approximation

UR - http://www.scopus.com/inward/record.url?scp=0037245094&partnerID=8YFLogxK

U2 - 10.1016/S0304-8853(02)00443-2

DO - 10.1016/S0304-8853(02)00443-2

M3 - Article

AN - SCOPUS:0037245094

SN - 0304-8853

VL - 256

SP - 151

EP - 157

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1-3

ER -