| Author/Editor | Muševič, I; Žekš, B; Blinc, R; Rasing, T | |
| Title | Magnetic-field-induced biaxiality in an antiferroelectric liquid crystal | |
| Type | članek | |
| Source | Phys Rev E | |
| Vol. and No. | Letnik 47, št. 2 | |
| Publication year | 1993 | |
| Volume | str. 1094-100 | |
| Language | eng | |
| Abstract | The magnetic-field-induced biaxiality of the originally uniaxial antiferroelectric chiral smeetic (SmCA) phase of 4-(1-mcthyl-hcptylox,ycarbonylphenyl) 4'-octylbiphenyl-4-carboxylate (MHPOBC) has been studied in a magnetic field applied perpendicular to the helical axis. The observed distortions of the central part of the conoscopic figures are explained on the basis of a perturbative approach to light propagation in spatially modulated birefringent phases. The critical magnetic field for the unwinding of the helical structure of the Sm-CA phase of MHPOBC is 13 T at 89 degrees C and is strongly temperature dependent. | |
| Descriptors | CRYSTALLOGRAPHY ELECTROMAGNETIC FIELDS TEMPERATURE |