Phonon dispersion of Mo-stabilized γ-U measured using inelastic x-ray scattering

doi:10.1103/PhysRevB.100.094311

This content will become publicly available on September 30, 2020

Title: Phonon dispersion of Mo-stabilized $γ$ -U measured using inelastic x-ray scattering

Abstract

We have measured the room-temperature phonon spectrum of Mo-stabilized γ–U. The dispersion curves show unusual softening near the H point, q = [1/2,1/2,1/2], which may derive from the metastability of the γ–U phase or from strong electron-phonon coupling. Near the zone center, the dispersion curves agree well with theory, though significant differences are observed away from the zone center. The experimental phonon density of states is shifted to higher energy compared to theory and high-temperature neutron scattering. As a result, the elastic constants of γ-UMo are similar to those of body-centered cubic elemental metals.

Authors:

^[1]; Ran, Sheng ^[2]; Said, A. H. ^[3];

^[1]; Söderlind, P. ^[4]; Rosas, Debra ^[4]; Idell, Yaakov ^[4];

^[5]; Butch, Nicholas P. ^[2]; Jeffries, J. R. ^[4]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
Argonne National Lab. (ANL), Lemont, IL (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of California, Davis, CA (United States)

Publication Date:: 2019-09-30

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1570896

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 100; Journal Issue: 9; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Brubaker, Zach E., Ran, Sheng, Said, A. H., Manley, Michael E., Söderlind, P., Rosas, Debra, Idell, Yaakov, Zieve, Rena J., Butch, Nicholas P., and Jeffries, J. R. Phonon dispersion of Mo-stabilized γ-U measured using inelastic x-ray scattering.  United States: N. p., 2019. 
        Web.  doi:10.1103/PhysRevB.100.094311.

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                    Brubaker, Zach E., Ran, Sheng, Said, A. H., Manley, Michael E., Söderlind, P., Rosas, Debra, Idell, Yaakov, Zieve, Rena J., Butch, Nicholas P., & Jeffries, J. R. Phonon dispersion of Mo-stabilized γ-U measured using inelastic x-ray scattering.  United States.  doi:10.1103/PhysRevB.100.094311.

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                    Brubaker, Zach E., Ran, Sheng, Said, A. H., Manley, Michael E., Söderlind, P., Rosas, Debra, Idell, Yaakov, Zieve, Rena J., Butch, Nicholas P., and Jeffries, J. R. Mon .  
        "Phonon dispersion of Mo-stabilized γ-U measured using inelastic x-ray scattering".  United States.  doi:10.1103/PhysRevB.100.094311.

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@article{osti_1570896,

  title        = {Phonon dispersion of Mo-stabilized γ-U measured using inelastic x-ray scattering},

  author       = {Brubaker, Zach E. and Ran, Sheng and Said, A. H. and Manley, Michael E. and Söderlind, P. and Rosas, Debra and Idell, Yaakov and Zieve, Rena J. and Butch, Nicholas P. and Jeffries, J. R.},

  abstractNote = {We have measured the room-temperature phonon spectrum of Mo-stabilized γ–U. The dispersion curves show unusual softening near the H point, q = [1/2,1/2,1/2], which may derive from the metastability of the γ–U phase or from strong electron-phonon coupling. Near the zone center, the dispersion curves agree well with theory, though significant differences are observed away from the zone center. The experimental phonon density of states is shifted to higher energy compared to theory and high-temperature neutron scattering. As a result, the elastic constants of γ-UMo are similar to those of body-centered cubic elemental metals.},

  doi          = {10.1103/PhysRevB.100.094311},

  journal      = {Physical Review B},

  number       = 9,

  volume       = 100,

  place        = {United States},

  year         = {2019},

  month        = {9}

}

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Similar Records

This content will become publicly available on September 30, 2020

Title: Phonon dispersion of Mo-stabilized γ -U measured using inelastic x-ray scattering

Abstract

Citation Formats

Large Harmonic Softening of the Phonon Density of States of Uranium journal, April 2001

High-temperature phonon stabilization of γ -uranium from relativistic first-principles theory journal, February 2012

Entropy Driven Stabilization of Energetically Unstable Crystal Structures Explained from First Principles Theory journal, March 2008

Lattice vibrations in tungsten at 22 °C studied by neutron scattering journal, September 1976

Elastic Constants of Tantalum, Tungsten, and Molybdenum journal, May 1963

Phonon dispersion of bcc cerium journal, June 2001

High-temperature and high-pressure phase transitions in uranium journal, February 2017

Investigation of the Phonon Dispersion Relations of Chromium by Inelastic Neutron Scattering journal, August 1971

GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal, March 2013

Crystal Dynamics of Copper journal, March 1967

Formation of a New Dynamical Mode in α -Uranium Observed by Inelastic X-Ray and Neutron Scattering journal, March 2006

Lattice dynamics of molybdenum journal, August 1964

Phonon dispersion of the bcc phase of group-IV metals. III. bcc hafnium journal, May 1991

Six-reflection meV-monochromator for synchrotron radiation journal, May 2011

Crystal structures of transition phases formed in U/16.60 at% Nb/5.64 at% Zr alloys journal, December 1969

The elastic constants of chromium journal, August 1971

New developments in fabrication of high-energy-resolution analyzers for inelastic X-ray spectroscopy journal, March 2011

Magnetism in transuranics (invited) journal, November 1982

Crystal Dynamics of Sodium at 90°K journal, November 1962

Single‐crystal elastic constants of vanadium and vanadium with oxygen additions journal, June 1979

Phonon dispersion of the bcc phase of group-IV metals. II. bcc zirconium, a model case of dynamical precursors of martensitic transitions journal, May 1991

Phonon Dispersion Relations of Body-Centered Cubic Thallium and the bcc-to-hcp Martensitic Phase Transformation journal, February 1983

Lattice dynamics and thermal transport in multiferroic CuCrO 2 journal, February 2017

Phonon line shapes and excitation energies journal, June 1997

Phonon anomalies in -uranium journal, March 2007

Elastic Constants of Iron from 4.2 to 300°K journal, June 1961

Phonon dispersion of the bcc phase of group-IV metals. I. bcc titanium journal, May 1991

Elastic Constants of Niobium from 4.2° to 300°K journal, November 1965

U-Mo Monolithic Fuel for Nuclear Research and Test Reactors journal, November 2017

Lattice dynamics of α -uranium journal, June 1979

Vibration-dominated negative mixing entropy for C impurities in α − U journal, November 2005

Thermal evolution of vibrational properties of α -U journal, November 2015

Temperature dependence of the elastic constants of single crystal lithium journal, May 1969

Lattice dynamics of strontium and barium journal, September 1984

Title: Phonon dispersion of Mo-stabilized $γ$ -U measured using inelastic x-ray scattering

Large Harmonic Softening of the Phonon Density of States of Uranium
journal, April 2001

High-temperature phonon stabilization of $γ$ -uranium from relativistic first-principles theory
journal, February 2012

Entropy Driven Stabilization of Energetically Unstable Crystal Structures Explained from First Principles Theory
journal, March 2008

Lattice vibrations in tungsten at 22 °C studied by neutron scattering
journal, September 1976

Elastic Constants of Tantalum, Tungsten, and Molybdenum
journal, May 1963

Phonon dispersion of bcc cerium
journal, June 2001

High-temperature and high-pressure phase transitions in uranium
journal, February 2017

Investigation of the Phonon Dispersion Relations of Chromium by Inelastic Neutron Scattering
journal, August 1971

GSAS-II : the genesis of a modern open-source all purpose crystallography software package
journal, March 2013

Crystal Dynamics of Copper
journal, March 1967

Formation of a New Dynamical Mode in $α$ -Uranium Observed by Inelastic X-Ray and Neutron Scattering
journal, March 2006

Lattice dynamics of molybdenum
journal, August 1964

Phonon dispersion of the bcc phase of group-IV metals. III. bcc hafnium
journal, May 1991

Six-reflection meV-monochromator for synchrotron radiation
journal, May 2011

Crystal structures of transition phases formed in U/16.60 at% Nb/5.64 at% Zr alloys
journal, December 1969

The elastic constants of chromium
journal, August 1971

New developments in fabrication of high-energy-resolution analyzers for inelastic X-ray spectroscopy
journal, March 2011

Magnetism in transuranics (invited)
journal, November 1982

Crystal Dynamics of Sodium at 90°K
journal, November 1962

Single‐crystal elastic constants of vanadium and vanadium with oxygen additions
journal, June 1979

Phonon dispersion of the bcc phase of group-IV metals. II. bcc zirconium, a model case of dynamical precursors of martensitic transitions
journal, May 1991

Phonon Dispersion Relations of Body-Centered Cubic Thallium and the bcc-to-hcp Martensitic Phase Transformation
journal, February 1983

Lattice dynamics and thermal transport in multiferroic ${CuCrO}_{2}$
journal, February 2017

Phonon line shapes and excitation energies
journal, June 1997

Phonon anomalies in -uranium
journal, March 2007

Elastic Constants of Iron from 4.2 to 300°K
journal, June 1961

Phonon dispersion of the bcc phase of group-IV metals. I. bcc titanium
journal, May 1991

Elastic Constants of Niobium from 4.2° to 300°K
journal, November 1965

U-Mo Monolithic Fuel for Nuclear Research and Test Reactors
journal, November 2017

Lattice dynamics of $α$ -uranium
journal, June 1979

Vibration-dominated negative mixing entropy for C impurities in $α − U$
journal, November 2005

Thermal evolution of vibrational properties of $α$ -U
journal, November 2015

Temperature dependence of the elastic constants of single crystal lithium
journal, May 1969

Lattice dynamics of strontium and barium
journal, September 1984