0000000000773485

AUTHOR

W. Weimer

showing 2 related works from this author

X-ray diffraction study of CF3Cl monolayers adsorbed on graphite (001)

1988

X-ray diffraction experiments have been performed on mono- and submonolayers of CF3Cl physisorbed on the (001) surfaces of exfoliated graphite. Five quasi-twodimensional solid phases including the commensurate 2×2 phase, an electrically ordered phase and a disordered incommensurate phase have been observed. A phase diagram is proposed and the various phase transitions are discussed.

DiffractionCrystallographyPhase transitionMaterials sciencePhysisorptionPhase (matter)X-ray crystallographyMonolayerGeneral Materials ScienceGraphiteCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsPhase diagramZeitschrift f�r Physik B Condensed Matter
researchProduct

Two-dimensional electrical ordering in physisorbed monolayers

1990

Abstract Monolayers of polar molecules CF3H, CF3Cl and CF2Cl2 have been physisorbed on the graphite (001) surface and studied by X-ray diffraction and dielectric measurements. The temperature-coverage phase diagrams of the quasitwodimensional crystalline phases are presented. The structures of the paraelectric and the electrically ordered phases have been determined. The phase transitions are discussed.

DiffractionCondensed Matter::Materials SciencePhase transitionMaterials scienceCondensed matter physicsChemical polarityMonolayerDielectricGraphitePhysics::Chemical PhysicsCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsPhase diagramFerroelectrics
researchProduct