Lattice dynamics of the A15 compound Nb/sub 3/Sb

Journal Article · Tue Nov 15 04:00:00 EST 1983 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.28.5866· OSTI ID:5400241

Pintschovius, L; Smith, H G; Wakabayashi, N; Reichardt, W; Weber, W; Webb, G W; Fisk, Z

The phonon dispersion curves of Nb/sub 3/Sb have been studied by inelastic neutron scattering. All the branches have been determined in the main symmetry directions and the results are analyzed with Born--von Karman models of different complexity. A model with general forces up to the eighth-nearest neighbors gives excellent agreement with experiment. However, a rather good description of the dispersion curves is obtained with a model including axially symmetric forces up to the third-nearest neighbors, which indicates that these interactions are dominant. Temperature effects were found to be very small. Additional experiments were performed on polycrystalline samples to determine directly the phonon density of states. Our results obtained on Nb/sub 3/Sb are compared with the available phonon data on Nb/sub 3/Sn.

• Research Organization: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 5400241
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 28:10; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIMONY COMPOUNDS
BETA-W LATTICES
BORN-VON KARMAN THEORY
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
DISPERSION RELATIONS
ENERGY-LEVEL DENSITY
INELASTIC SCATTERING
MONOCRYSTALS
NEUTRON DIFFRACTION
NIOBIUM COMPOUNDS
PHONONS
POLYCRYSTALS
QUASI PARTICLES
SCATTERING
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS