Anharmonicity of optical hydrogen vibrations in RhH

V. E. Antonov; T. E. Antonova; V. K. Fedotov; B. A. Gnesin; A. S. Ivanov; A. I. Kolesnikov

doi:10.1016/j.jallcom.2006.11.150

Anharmonicity of optical hydrogen vibrations in RhH

V. E. Antonov, T. E. Antonova, V. K. Fedotov, B. A. Gnesin, A. S. Ivanov, A. I. Kolesnikov

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

4 Scopus citations

Abstract

A polycrystalline sample of nearly stoichiometric fcc rhodium hydride was synthesised under high hydrogen pressure and then studied at ambient pressure and 5 K by inelastic neutron scattering in the range of energy transfers 35-380 meV. The fundamental band of optical hydrogen vibrations was shown to consist of a strong peak centred at 74 meV and broadened towards higher energies. The second and third band demonstrated essentially anharmonic behaviour, which is not typical of monohydrides of 3d- and 4d-metals with close-packed metal lattices.

Original language	English
Pages (from-to)	508-511
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	446-447
DOIs	https://doi.org/10.1016/j.jallcom.2006.11.150
State	Published - Oct 31 2007
Externally published	Yes

Funding

This work was supported by grant No. 05-02-17733 from the Russian Foundation for Basic Research and by the Program “Physics and Mechanics of Strongly Compressed Matter” of the Russian Academy of Sciences. Work at ANL was performed under the auspices of the US DOE-BES, contract No. W-31-109-ENG-38.

Funders	Funder number
Russian Foundation for Basic Research
Russian Academy of Sciences

Keywords

Inelastic neutron scattering
Interstitial alloys

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10.1016/j.jallcom.2006.11.150

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title = "Anharmonicity of optical hydrogen vibrations in RhH",

abstract = "A polycrystalline sample of nearly stoichiometric fcc rhodium hydride was synthesised under high hydrogen pressure and then studied at ambient pressure and 5 K by inelastic neutron scattering in the range of energy transfers 35-380 meV. The fundamental band of optical hydrogen vibrations was shown to consist of a strong peak centred at 74 meV and broadened towards higher energies. The second and third band demonstrated essentially anharmonic behaviour, which is not typical of monohydrides of 3d- and 4d-metals with close-packed metal lattices.",

keywords = "Inelastic neutron scattering, Interstitial alloys",

author = "Antonov, {V. E.} and Antonova, {T. E.} and Fedotov, {V. K.} and Gnesin, {B. A.} and Ivanov, {A. S.} and Kolesnikov, {A. I.}",

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doi = "10.1016/j.jallcom.2006.11.150",

language = "English",

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journal = "Journal of Alloys and Compounds",

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T1 - Anharmonicity of optical hydrogen vibrations in RhH

AU - Antonov, V. E.

AU - Antonova, T. E.

AU - Fedotov, V. K.

AU - Gnesin, B. A.

AU - Ivanov, A. S.

AU - Kolesnikov, A. I.

PY - 2007/10/31

Y1 - 2007/10/31

N2 - A polycrystalline sample of nearly stoichiometric fcc rhodium hydride was synthesised under high hydrogen pressure and then studied at ambient pressure and 5 K by inelastic neutron scattering in the range of energy transfers 35-380 meV. The fundamental band of optical hydrogen vibrations was shown to consist of a strong peak centred at 74 meV and broadened towards higher energies. The second and third band demonstrated essentially anharmonic behaviour, which is not typical of monohydrides of 3d- and 4d-metals with close-packed metal lattices.

AB - A polycrystalline sample of nearly stoichiometric fcc rhodium hydride was synthesised under high hydrogen pressure and then studied at ambient pressure and 5 K by inelastic neutron scattering in the range of energy transfers 35-380 meV. The fundamental band of optical hydrogen vibrations was shown to consist of a strong peak centred at 74 meV and broadened towards higher energies. The second and third band demonstrated essentially anharmonic behaviour, which is not typical of monohydrides of 3d- and 4d-metals with close-packed metal lattices.

KW - Inelastic neutron scattering

KW - Interstitial alloys

UR - http://www.scopus.com/inward/record.url?scp=35148875176&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2006.11.150

DO - 10.1016/j.jallcom.2006.11.150

M3 - Article

AN - SCOPUS:35148875176

SN - 0925-8388

VL - 446-447

SP - 508

EP - 511

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Anharmonicity of optical hydrogen vibrations in RhH

Abstract

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Keywords

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