Structural phase transition in CeCu/sub 6/

Conference · Thu Aug 01 00:00:00 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-31-109-ENG-38
• OSTI ID: 5330854
• Report Number(s): CONF-850871-10; ON: DE85018362
• Resource Relation: Conference: International conference on neutron scattering, Santa Fe, NM, USA, 19 Aug 1985
• Country of Publication: United States
• Language: English

Related Subjects

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