期刊
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
卷 606, 期 1, 页码 111-125出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/15421406.2014.915648
关键词
dielectric spectroscopy; Activation energy; B1 and B2 phases; bent core liquid crystal
资金
- Council of Scientific and Industrial Research (CSIR), Government of India
- UGC New Delhi
Detail dielectric measurements were carried out on two different liquid crystalline (LC) samples formed by bent core (BC) molecules, showing B1 and B2 phases in the temperature range 100-150 degrees C. The thermal variation of real part of dielectric permittivity (epsilon ') represents a tiny dip only in the saturated B1 phase which might arising from the dipole orientation disorder due to the inherent phase instability. The experimental data have been used to determine different relaxation parameters. Evidently only one relaxation mode has been detected in the dielectric relaxation spectrum for both phases, which is attributed to the long axis molecular rotation process.
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