Synchrotron X-Ray Study of Novel Crystalline-BPhases in Heptyloxybenzylidene-Heptylaniline (7O.7)
| Autor: | J. Collett, J. D. Litster, Robert J. Birgeneau, L. B. Sorensen, Jens Aage Als-Nielsen, Peter S. Pershan |
|---|---|
| Rok vydání: | 1982 |
| Předmět: |
Diffraction
Materials science business.industry Hexagonal crystal system X-ray General Physics and Astronomy Synchrotron law.invention Condensed Matter::Materials Science Crystallography Optics law Phase (matter) Condensed Matter::Strongly Correlated Electrons Orthorhombic crystal system business Sinusoidal modulation Monoclinic crystal system |
| Zdroj: | Physical Review Letters. 49:553-556 |
| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.49.553 |
| Popis: | This paper reports an x-ray diffraction study of structures and restacking transitions within the $B$ phases of heptyloxybenzylidene-heptylaniline. The system evolves from a hexagonal close-packed structure, through intermediate orthorhombic and monoclinic phases, to a simple hexagonal structure. The monoclinic phase has a temperature-dependent shear which transforms the system from orthorhombic to hexagonal. The latter three phases exhibit a single-$\stackrel{\ensuremath{\rightarrow}}{\mathrm{q}}$ sinusoidal modulation of the molecular layers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|