Addendum to the lattice dynamics of. gamma. -Ce

Journal Article · Sat May 15 00:00:00 EDT 1982 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.25.6485· OSTI ID:5048714

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

Inelastic neutron scattering techniques have been used to study the temperature dependence of the dispersion curves of ..gamma..-Ce. We find that the frequencies of all but the T (111), branches exhibit normal temperature dependence. Close to the zone boundary the frequencies of the T(111) branch, on the other hand, decrease with decreasing temperature, and at room temperature this branch exhibits a dip at the zone boundary. This anomalous behavior may be related to the fcc..-->..dhcp phase transition.

• Research Organization: Ames Laboratory-U. S. Department of Energy and Department of Physics, Iowa State University, Ames, Iowa 50011
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5048714
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 25:10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM
CRYSTAL-PHASE TRANSFORMATIONS
PHONONS
HIGH TEMPERATURE
MEDIUM TEMPERATURE
NEUTRON DIFFRACTION
TEMPERATURE DEPENDENCE
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
METALS
PHASE TRANSFORMATIONS
QUASI PARTICLES
RARE EARTHS
SCATTERING
360102* - Metals & Alloys- Structure & Phase Studies