6533b821fe1ef96bd127ae96

RESEARCH PRODUCT

On the phase transition in CsCN

G. KnoppS. HaussühlK. KnorrAlois Loidl

subject

chemistry.chemical_classificationPermittivityDiffractionPhase transitionMaterials scienceCondensed matter physicsbusiness.industryPhysics::OpticsDielectricCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceDipoleOpticschemistryX-ray crystallographyGeneral Materials ScienceDielectric lossbusinessInorganic compound

description

X-ray diffraction and dielectric measurements have been performed on the molecular crystal CsCN as a function of temperature. The order parameter of the cubic to rhombohedral phase transition (Tc=186 K) was determined and interpreted by a coupling of the (CN)− orientations to the shear strain. At lower temperatures the dielectric response is dominated by thermally activated relaxations processes rather than by electrical ordering of the CN dipoles.

https://doi.org/10.1007/bf01307681