Structural phase transition in CeCu/sub 6/

Conference · Thu Aug 01 04:00:00 EDT 1985

OSTI ID:5330854

Vrtis, M L; Jorgensen, J D; Hinks, D G

The structure of CeCu/sub 6/ has been studied at eight temperatures from 10K to 295K by time-of-flight neutron powder diffraction. The high temperature orthorhombic cell transforms to a monoclinic cell at 230K. Rietveld structural refinements at each temperature give details of the structural distortion associated with the transition. The space groups and the temperature dependence of the monoclinic strain are consistent with a second order transition driven by a soft acoustic phonon mode. However, small atom displacements perpendicular to the shear direction suggest that an optic mode may also be involved in the transition.

• Research Organization: Argonne National Lab., IL (USA); Northwestern Univ., Evanston, IL (USA). Dept. of Physics and Astronomy
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5330854
• Report Number(s): CONF-850871-10; ON: DE85018362
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CERIUM ALLOYS
COHERENT SCATTERING
COPPER ALLOYS
COPPER BASE ALLOYS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFRACTION
MONOCLINIC LATTICES
NEUTRON DIFFRACTION
ORTHORHOMBIC LATTICES
PHASE TRANSFORMATIONS
RARE EARTH ALLOYS
SCATTERING