DO THE SMECTIC-O AND THE ANTIFERROELECTRIC SMECTIC-C PHASES BELONG TOTHE SAME PHASE-TYPE

Authors
HEPPKE G KLEINEBERG P LOTZSCH D MERY S SHASHIDHAR R
Citation
G. Heppke et al., DO THE SMECTIC-O AND THE ANTIFERROELECTRIC SMECTIC-C PHASES BELONG TOTHE SAME PHASE-TYPE, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 231, 1993, pp. 257-262
Citations number
10
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
231
Year of publication
1993
Pages
257 - 262
Database
ISI
SICI code
1058-725X(1993)231:<257:DTSATA>2.0.ZU;2-X
Abstract
Miscibility studies have been carried out between chiral 1-methylhepty l-terephthalidene-bis-amino-cinnamate (MHTAC) and chiral carbonyl)-phe nyl-4'-octyloxybiphenyl-4-carboxylate (MHPOBC). An uninterrupted misci bility is observed between the SmO phase of MHTAC and the antiferroele ctric SmC phase of MHPOBC indicating thereby that these smectic modifi cations belong to the same phase type. In addition, the antiferroelect ric properties of MHTAC have been studied. Above a threshold electric field the SmO phase is transformed into a ferroelectric switching stat e which exhibits a maximum spontaneous polarization of about 380 nC/cm 2.