Observation of Three Subphases in Smectic C* of MHPOBC by Dielectric Measurements
- 1 January 1990
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 29 (1A) , L103-106
- https://doi.org/10.1143/jjap.29.l103
Abstract
In the phase transition from the paraelectric smectic A to the antiferroelectric SmCA * phase via the ferroelectric SmC* phase in MHPOBC, the existence of a subphase, SmCα *, between SmA and the normal SmC* (SmCβ *) was confirmed in addition to that of another subphase, SmCγ *, between SmC* and SmCA * by means of dielectric measurements. It was also confirmed that these subphases, SmCα * and SmCγ *, disappear in the same compound of lower optical purity as observed by DSC. The model structure of the SmCα * phase is speculated on the basis of the dielectric measurements.Keywords
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