Abstract
High-resolution ac calorimetry was used to measure the heat capacity of n-hexyl-4-n-pentyloxybiphenyl-4-carboxylate in the vicinity of the smectic-A (SmA)hexatic-B and hexatic-B-E transitions. The SmA hexatic-B transition was found to be continuous with critical exponents -=+=0.610.02 and amplitude ratio A+A-=0.840.03. The addition of a crystalline-B material [N-(4-n- butyloxybenzylidene)-4-octylaniline (4O.8), 10 wt.%] produced a weakly-first-order SmA hexatic-B phase transition. The data with
Original language | English (US) |
---|---|
Pages (from-to) | 2433-2441 |
Number of pages | 9 |
Journal | Physical Review A |
Volume | 28 |
Issue number | 4 |
DOIs | |
State | Published - Jan 1 1983 |