Temperature dependence and anharmonicity of the Debye-Waller factor in sodium metal using Mössbauer -ray diffraction

M. L. Crow; G. Schupp; W. B. Yelon; J. G. Mullen; A. Djedid

doi:10.1103/PhysRevB.39.909

Temperature dependence and anharmonicity of the Debye-Waller factor in sodium metal using Mössbauer -ray diffraction

M. L. Crow, G. Schupp, W. B. Yelon, J. G. Mullen, A. Djedid

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Abstract

The Debye-Waller factor of sodium has been measured as a function of temperature from 80 to 295 K using Mössbauer -ray scattering. The high energy resolution provided by this technique allowed experimental separation of the elastic scattering from the inelastic thermal diffuse scattering. The results were compared with the harmonic model using integrations over dispersion curves from the neutron-scattering measurements of Woods et al. and the lattice-dynamics calculations of Glyde and Taylor. The Debye-Waller exponent was shown to exceed the harmonic prediction by 23% at room temperature. This difference is attributed to anharmonic terms in the interatomic potential.

Original language	English
Pages (from-to)	909-914
Number of pages	6
Journal	Physical Review B
Volume	39
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.39.909
State	Published - 1989
Externally published	Yes

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title = "Temperature dependence and anharmonicity of the Debye-Waller factor in sodium metal using M{\"o}ssbauer -ray diffraction",

abstract = "The Debye-Waller factor of sodium has been measured as a function of temperature from 80 to 295 K using M{\"o}ssbauer -ray scattering. The high energy resolution provided by this technique allowed experimental separation of the elastic scattering from the inelastic thermal diffuse scattering. The results were compared with the harmonic model using integrations over dispersion curves from the neutron-scattering measurements of Woods et al. and the lattice-dynamics calculations of Glyde and Taylor. The Debye-Waller exponent was shown to exceed the harmonic prediction by 23% at room temperature. This difference is attributed to anharmonic terms in the interatomic potential.",

author = "Crow, {M. L.} and G. Schupp and Yelon, {W. B.} and Mullen, {J. G.} and A. Djedid",

year = "1989",

doi = "10.1103/PhysRevB.39.909",

language = "English",

volume = "39",

pages = "909--914",

journal = "Physical Review B",

issn = "0163-1829",

publisher = "American Physical Society",

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T1 - Temperature dependence and anharmonicity of the Debye-Waller factor in sodium metal using Mössbauer -ray diffraction

AU - Crow, M. L.

AU - Schupp, G.

AU - Yelon, W. B.

AU - Mullen, J. G.

AU - Djedid, A.

PY - 1989

Y1 - 1989

N2 - The Debye-Waller factor of sodium has been measured as a function of temperature from 80 to 295 K using Mössbauer -ray scattering. The high energy resolution provided by this technique allowed experimental separation of the elastic scattering from the inelastic thermal diffuse scattering. The results were compared with the harmonic model using integrations over dispersion curves from the neutron-scattering measurements of Woods et al. and the lattice-dynamics calculations of Glyde and Taylor. The Debye-Waller exponent was shown to exceed the harmonic prediction by 23% at room temperature. This difference is attributed to anharmonic terms in the interatomic potential.

AB - The Debye-Waller factor of sodium has been measured as a function of temperature from 80 to 295 K using Mössbauer -ray scattering. The high energy resolution provided by this technique allowed experimental separation of the elastic scattering from the inelastic thermal diffuse scattering. The results were compared with the harmonic model using integrations over dispersion curves from the neutron-scattering measurements of Woods et al. and the lattice-dynamics calculations of Glyde and Taylor. The Debye-Waller exponent was shown to exceed the harmonic prediction by 23% at room temperature. This difference is attributed to anharmonic terms in the interatomic potential.

UR - http://www.scopus.com/inward/record.url?scp=35949012150&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.39.909

DO - 10.1103/PhysRevB.39.909

M3 - Article

AN - SCOPUS:35949012150

SN - 0163-1829

VL - 39

SP - 909

EP - 914

JO - Physical Review B

JF - Physical Review B

IS - 2

ER -

Temperature dependence and anharmonicity of the Debye-Waller factor in sodium metal using Mössbauer -ray diffraction

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