学術雑誌論文

本学関連学会

text

電気材料技術雑誌. 1993, 2, p. 45-56

日本語

text

1993-08-01

The study of detailed dielectric and optical properties in antiferroelectric liquid crystals such as (R)-4'-(3-methoxycarbonyl-2-propoxycarbonyl)phenyl 4-(4-(n-octyloxy)phenyl)benzoate (3MC2PCPOPB) and 4-(1, 1, 1-trifluoromethyl-heptyloxycarbonyl)phenyl 4'-octyloxybiphenyl-4-carboxylate (TFMHPOBC) have been carried out. T(temperature)-E(electric field) phase diagram of 3MC2PCPOPB is obtained on the basis of the apparent tilt angle measurements. It has been found that the phase sequence in this compound is novel and has never been reported. In the antiferroelectric phase under no bias field in TFMHPOBC, the relaxation due to the soft mode and the molecular rotation around the short axis are observed. Under dc bias field in this compound, a new relaxation is observed in the Sm CA* phase. The dielectric strength of this relaxation depends on the bias field, while the relaxation frequency is not affected by the dc bias field. This relaxation may be due to the contribution of the Goldstone mode induced by the bias field. In 3MC2PCPOPB, on the contrary, the relaxation of the Goldstone mode has not been observed in the Sm CA* phase even though dc bias field is applied.

81547

反強誘電性液晶の誘電的光学的性質

電気材料技術懇談会

日本語

1993-08-01

電気材料技術雑誌

2

45

56

https://hdl.handle.net/11094/81547