Abstract
Temperature variation of dielectric loss, dielectric permittivity and percentage optical transmittance of two calamitic H-bonded mesogens C4Py12Bā and C4Py10Bā have been reported in the temperature range of 80°C to 140°C. The dielectric loss and dielectric permittivity have also been measured with variation of frequency. The dielectric studies have been conducted in the frequency range of 1 kHz to 5 MHz. Transition temperatures obtained by using different techniques are found to be in good agreement with each other.
Acknowledgment
The authors are thankful to DST, ISRO and BRNS UGC for providing grant project no. ISRO/OGP-75.