Abstract
The ultrasonic attenuation and velocity of longitudinal waves in the nematic liquid crystal -methoxybenzylidine--butylaniline have been measured as a function of temperature and applied magnetic field at 3.5 MHz, between 17 and 65°C. The orientational anisotropy of the attenuation is strongly temperature dependent in the nematic phase. The velocity shows a 9% dip in the region of the transition; no anisotropy was observed within the 1% accuracy of the measurements.
- Received 27 March 1972
DOI:https://doi.org/10.1103/PhysRevLett.28.1439
©1972 American Physical Society