Lattice dynamics of CePd/sub 3/

Journal Article · Sat Oct 15 00:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.7365· OSTI ID:7092074

Loong, C; Zarestky, J; Stassis, C; McMasters, O D; Nicklow, R M

The room-temperature phonon-dispersion curves of the mixed-valent compound CePd/sub 3/ were measured by inelastic neutron scattering techniques. No significant anomalies in either the phonon frequencies or in the widths of the measured neutron groups were observed. The phonon spectrum of CePd/sub 3/ resembles closely those of CeSn/sub 3/ and LaSn/sub 3/. It is estimated that any lifetime effects due to the electron-phonon coupling in CePd/sub 3/ are certainly smaller than approximately 0.15 THz at room temperature. The force constants obtained by fitting the experimental data to a three-nearest-neighbor Born--von Karman model were used to evaluate the phonon density of states, the lattice specific heat, and the atomic temperature factors of Ce and Pd in CePd/sub 3/.

• Research Organization: Intense Pulsed Neutron Source, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 7092074
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:11; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
BORN-VON KARMAN THEORY
CERIUM COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
DISPERSION RELATIONS
ELECTRON-PHONON COUPLING
ENERGY-LEVEL DENSITY
INELASTIC SCATTERING
LATTICE VIBRATIONS
MEDIUM TEMPERATURE
NEUTRON DIFFRACTION
PALLADIUM COMPOUNDS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RARE EARTH COMPOUNDS
SCATTERING
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS