Inelastic neutron scattering study of the ordered Pd-Ag-H hydrides

A. I. Kolesnikov; V. E. Antonov; G. Eckold; M. Prager; J. Tomkinson

doi:10.1088/0953-8984/5/38/004

Inelastic neutron scattering study of the ordered Pd-Ag-H hydrides

A. I. Kolesnikov, V. E. Antonov, G. Eckold, M. Prager, J. Tomkinson

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Abstract

Inelastic incoherent neutron scattering studies of vibrational spectra (2-400 meV) were carried out on the atomically ordered phase of palladium-silver hydrides synthesized under a high pressure of gaseous hydrogen. The results showed a large difference betwen the Pd-H and Ag-H interactions in the hydrides. The optic-phonon group was found to be split into two peaks. One peak was positioned at about the same energy as the peak from the transverse optic modes in PdH_x whereas the other had a much higher energy and originated from the Ag-H interaction. The experimental spectrum of nearly stoichiometric PdAgH_0.86 was fitted using a conventional Born-von Karman model. The value of about 93 meV was predicted for the local hydrogen vibrations in dilute Ag-H solid solutions.

Original language	English
Article number	004
Pages (from-to)	7075-7086
Number of pages	12
Journal	Journal of Physics Condensed Matter
Volume	5
Issue number	38
DOIs	https://doi.org/10.1088/0953-8984/5/38/004
State	Published - 1993
Externally published	Yes

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title = "Inelastic neutron scattering study of the ordered Pd-Ag-H hydrides",

abstract = "Inelastic incoherent neutron scattering studies of vibrational spectra (2-400 meV) were carried out on the atomically ordered phase of palladium-silver hydrides synthesized under a high pressure of gaseous hydrogen. The results showed a large difference betwen the Pd-H and Ag-H interactions in the hydrides. The optic-phonon group was found to be split into two peaks. One peak was positioned at about the same energy as the peak from the transverse optic modes in PdHx whereas the other had a much higher energy and originated from the Ag-H interaction. The experimental spectrum of nearly stoichiometric PdAgH0.86 was fitted using a conventional Born-von Karman model. The value of about 93 meV was predicted for the local hydrogen vibrations in dilute Ag-H solid solutions.",

author = "Kolesnikov, {A. I.} and Antonov, {V. E.} and G. Eckold and M. Prager and J. Tomkinson",

year = "1993",

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T1 - Inelastic neutron scattering study of the ordered Pd-Ag-H hydrides

AU - Kolesnikov, A. I.

AU - Antonov, V. E.

AU - Eckold, G.

AU - Prager, M.

AU - Tomkinson, J.

PY - 1993

Y1 - 1993

N2 - Inelastic incoherent neutron scattering studies of vibrational spectra (2-400 meV) were carried out on the atomically ordered phase of palladium-silver hydrides synthesized under a high pressure of gaseous hydrogen. The results showed a large difference betwen the Pd-H and Ag-H interactions in the hydrides. The optic-phonon group was found to be split into two peaks. One peak was positioned at about the same energy as the peak from the transverse optic modes in PdHx whereas the other had a much higher energy and originated from the Ag-H interaction. The experimental spectrum of nearly stoichiometric PdAgH0.86 was fitted using a conventional Born-von Karman model. The value of about 93 meV was predicted for the local hydrogen vibrations in dilute Ag-H solid solutions.

AB - Inelastic incoherent neutron scattering studies of vibrational spectra (2-400 meV) were carried out on the atomically ordered phase of palladium-silver hydrides synthesized under a high pressure of gaseous hydrogen. The results showed a large difference betwen the Pd-H and Ag-H interactions in the hydrides. The optic-phonon group was found to be split into two peaks. One peak was positioned at about the same energy as the peak from the transverse optic modes in PdHx whereas the other had a much higher energy and originated from the Ag-H interaction. The experimental spectrum of nearly stoichiometric PdAgH0.86 was fitted using a conventional Born-von Karman model. The value of about 93 meV was predicted for the local hydrogen vibrations in dilute Ag-H solid solutions.

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Inelastic neutron scattering study of the ordered Pd-Ag-H hydrides

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