Phonon spectra and discrete oscillatory levels in crystal superlattices of deuterium- and hydrogen-palladium solid solutions

S. B. Feodosyev*, I. A. Gospodarev, V. I. Grishaev, A. M. Kosevich, O. V. Kotlyar, E. S. Syrkin

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Characteristics of the discrete vibration levels of substitution impurity are calculated for frequencies belong to gap between acoustic and optical zones (deuterium in PdH) as well as for the areas outside the phonon spectra (hydrogen in PdD). Data of neutron diffraction analysis are used to determine the force constants of pure palladium as well as PdH solid solutions. Diverse configurations of vacancies close to impurity atoms are discussed. With the help of the calculated frequencies and intensities of the local and "gap" vibrations in the system "isotope-defect + vacancies" it is possible to analyze behavior of the certain characteristics in disordered solid solutions PdH(D)x<1 and to obtain information about the vacancy structure of the considered compounds.

Original languageEnglish
Pages (from-to)665-674
Number of pages10
JournalJournal of Low Temperature Physics
Volume139
Issue number5-6
DOIs
Publication statusPublished - 1 Jun 2005

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Deuterium
Superlattices
Palladium
Vacancies
superlattices
palladium
deuterium
Hydrogen
Solid solutions
solid solutions
Crystals
hydrogen
Impurities
crystals
impurities
vibration
Neutron diffraction
Isotopes
neutron diffraction
Substitution reactions

Cite this

Feodosyev, S. B. ; Gospodarev, I. A. ; Grishaev, V. I. ; Kosevich, A. M. ; Kotlyar, O. V. ; Syrkin, E. S. / Phonon spectra and discrete oscillatory levels in crystal superlattices of deuterium- and hydrogen-palladium solid solutions. In: Journal of Low Temperature Physics. 2005 ; Vol. 139, No. 5-6. pp. 665-674.
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abstract = "Characteristics of the discrete vibration levels of substitution impurity are calculated for frequencies belong to gap between acoustic and optical zones (deuterium in PdH) as well as for the areas outside the phonon spectra (hydrogen in PdD). Data of neutron diffraction analysis are used to determine the force constants of pure palladium as well as PdH solid solutions. Diverse configurations of vacancies close to impurity atoms are discussed. With the help of the calculated frequencies and intensities of the local and {"}gap{"} vibrations in the system {"}isotope-defect + vacancies{"} it is possible to analyze behavior of the certain characteristics in disordered solid solutions PdH(D)x<1 and to obtain information about the vacancy structure of the considered compounds.",
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Phonon spectra and discrete oscillatory levels in crystal superlattices of deuterium- and hydrogen-palladium solid solutions. / Feodosyev, S. B.; Gospodarev, I. A.; Grishaev, V. I.; Kosevich, A. M.; Kotlyar, O. V.; Syrkin, E. S.

In: Journal of Low Temperature Physics, Vol. 139, No. 5-6, 01.06.2005, p. 665-674.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Phonon spectra and discrete oscillatory levels in crystal superlattices of deuterium- and hydrogen-palladium solid solutions

AU - Feodosyev, S. B.

AU - Gospodarev, I. A.

AU - Grishaev, V. I.

AU - Kosevich, A. M.

AU - Kotlyar, O. V.

AU - Syrkin, E. S.

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AB - Characteristics of the discrete vibration levels of substitution impurity are calculated for frequencies belong to gap between acoustic and optical zones (deuterium in PdH) as well as for the areas outside the phonon spectra (hydrogen in PdD). Data of neutron diffraction analysis are used to determine the force constants of pure palladium as well as PdH solid solutions. Diverse configurations of vacancies close to impurity atoms are discussed. With the help of the calculated frequencies and intensities of the local and "gap" vibrations in the system "isotope-defect + vacancies" it is possible to analyze behavior of the certain characteristics in disordered solid solutions PdH(D)x<1 and to obtain information about the vacancy structure of the considered compounds.

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