6533b86cfe1ef96bd12c8ba6
RESEARCH PRODUCT
Reorientations and phase transitions in (Kr)1-x(CH4-nDn)x
Alois LoidlRoland Böhmersubject
PermittivityPhase transitionMaterials scienceKryptonchemistry.chemical_elementDielectricCondensed Matter PhysicsMolecular physics530Electronic Optical and Magnetic MaterialsDipoleNuclear magnetic resonancechemistryKinetic isotope effectGeneral Materials SciencePhase diagramSolid solutiondescription
The condensed isotopic modifications of methane, CH4, CH2D2, and CD4 and their solutions with Kr were investigated using dielectric techniques. The polarizabilities were computed from the permittivities of the pure liquids. Phase diagrams of methane-krypton alloys were deduced in the liquid-solid coexistence region and for the low temperature phases (T<30 K). From the Curielaws, which described the permittivities of the (Kr)1-x(CH2D2)x mixed crystals, the permanent dioole moment of CH2D2 is calculated to be 4 mD. In the octopolar ordered phases of the solid solutions the effective dipole moments are enhanced significantly.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-02-01 |