High pressure study of the intermetallic compound UFe2Al10

I. Halevy; V. Y. Zenou; S. Salhov; E. N. Caspi; W. Schäfer; I. Yaar

doi:10.1016/j.jallcom.2005.10.004

High pressure study of the intermetallic compound UFe₂Al₁₀

I. Halevy, V. Y. Zenou, S. Salhov, E. N. Caspi, W. Schäfer, I. Yaar

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

6 Scopus citations

Abstract

The crystallographic and electronic structure of UFe₂Al₁₀ was studied as a function of pressure by combining X-ray diffraction results with the full potential linearized augmented plane wave (LAPW) calculations method. The volume-pressure reduction measured at 23.5 GPa is V/V₀ = 0.87, with a B₀ value of 132 ± 8 GPa. The uranium 5f electrons in this compound are located in a narrow and well-defined band above E_Fermi, having a very weak interaction with the iron 3d band located below E_Fermi. Consequently, the DOS at E_Fermi is close to zero, indicating a close to zero-magnetic moment of the uranium atom at low temperature up to a pressure of 23.5 GPa, as expected from the layered crystallographic structure of this compound. The above assumption is supported by preliminary neutron diffraction data, where no long-range magnetic order was detected down to 3 K.

Original language	English
Pages (from-to)	21-24
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	419
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2005.10.004
State	Published - 10 Aug 2006
Externally published	Yes

Keywords

Actinides
LAPW
Pressure
ThMn

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2005.10.004

Cite this

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title = "High pressure study of the intermetallic compound UFe2Al10",

abstract = "The crystallographic and electronic structure of UFe2Al10 was studied as a function of pressure by combining X-ray diffraction results with the full potential linearized augmented plane wave (LAPW) calculations method. The volume-pressure reduction measured at 23.5 GPa is V/V0 = 0.87, with a B0 value of 132 ± 8 GPa. The uranium 5f electrons in this compound are located in a narrow and well-defined band above EFermi, having a very weak interaction with the iron 3d band located below EFermi. Consequently, the DOS at EFermi is close to zero, indicating a close to zero-magnetic moment of the uranium atom at low temperature up to a pressure of 23.5 GPa, as expected from the layered crystallographic structure of this compound. The above assumption is supported by preliminary neutron diffraction data, where no long-range magnetic order was detected down to 3 K.",

keywords = "Actinides, LAPW, Pressure, ThMn",

author = "I. Halevy and Zenou, \{V. Y.\} and S. Salhov and Caspi, \{E. N.\} and W. Sch{\"a}fer and I. Yaar",

year = "2006",

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doi = "10.1016/j.jallcom.2005.10.004",

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journal = "Journal of Alloys and Compounds",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - High pressure study of the intermetallic compound UFe2Al10

AU - Halevy, I.

AU - Zenou, V. Y.

AU - Salhov, S.

AU - Caspi, E. N.

AU - Schäfer, W.

AU - Yaar, I.

PY - 2006/8/10

Y1 - 2006/8/10

N2 - The crystallographic and electronic structure of UFe2Al10 was studied as a function of pressure by combining X-ray diffraction results with the full potential linearized augmented plane wave (LAPW) calculations method. The volume-pressure reduction measured at 23.5 GPa is V/V0 = 0.87, with a B0 value of 132 ± 8 GPa. The uranium 5f electrons in this compound are located in a narrow and well-defined band above EFermi, having a very weak interaction with the iron 3d band located below EFermi. Consequently, the DOS at EFermi is close to zero, indicating a close to zero-magnetic moment of the uranium atom at low temperature up to a pressure of 23.5 GPa, as expected from the layered crystallographic structure of this compound. The above assumption is supported by preliminary neutron diffraction data, where no long-range magnetic order was detected down to 3 K.

AB - The crystallographic and electronic structure of UFe2Al10 was studied as a function of pressure by combining X-ray diffraction results with the full potential linearized augmented plane wave (LAPW) calculations method. The volume-pressure reduction measured at 23.5 GPa is V/V0 = 0.87, with a B0 value of 132 ± 8 GPa. The uranium 5f electrons in this compound are located in a narrow and well-defined band above EFermi, having a very weak interaction with the iron 3d band located below EFermi. Consequently, the DOS at EFermi is close to zero, indicating a close to zero-magnetic moment of the uranium atom at low temperature up to a pressure of 23.5 GPa, as expected from the layered crystallographic structure of this compound. The above assumption is supported by preliminary neutron diffraction data, where no long-range magnetic order was detected down to 3 K.

KW - Actinides

KW - LAPW

KW - Pressure

KW - ThMn

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DO - 10.1016/j.jallcom.2005.10.004

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