TY - JOUR
T1 - Electrical and optical responses of an antiferroelectric liquid crystal in SmA, SmCa and SmC phases
AU - Sako, Teiyu
AU - Kimura, Yasuyuki
AU - Hayakawa, Reinosuke
AU - Okabe, Nobuhiro
AU - Suzuki, Yoshiichi
N1 - Funding Information:
This work is partly supported by Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture of Japan.
PY - 1995/4
Y1 - 1995/4
N2 - The SmA, SmCa and SmC phases of an antiferroelectric liquid crystal 4-(l-methylheptyloxycarbonyl) phenyl 4'-octyloxybiphenyl-4-carboxylate (MHPOBC) have been studied by means of simultaneous measurements of the dielectric constant and the electroclinic coefficient under a dc bias electric field. From the three dimensional representation of the electroclinic coefficient as a function of dc electric field and temperature, it is confirmed that there is no helix with a long pitch in the SmCa phase and the electric field-temperature phase diagram for these phases is obtained. In the SmA phase near the phase transition temperature, the temperature dependences of the dielectric constant and the electroclinic coefficient are analyzed in terms of the phenomenological theory of Landau type and the parameters appearing in the theory are determined.
AB - The SmA, SmCa and SmC phases of an antiferroelectric liquid crystal 4-(l-methylheptyloxycarbonyl) phenyl 4'-octyloxybiphenyl-4-carboxylate (MHPOBC) have been studied by means of simultaneous measurements of the dielectric constant and the electroclinic coefficient under a dc bias electric field. From the three dimensional representation of the electroclinic coefficient as a function of dc electric field and temperature, it is confirmed that there is no helix with a long pitch in the SmCa phase and the electric field-temperature phase diagram for these phases is obtained. In the SmA phase near the phase transition temperature, the temperature dependences of the dielectric constant and the electroclinic coefficient are analyzed in terms of the phenomenological theory of Landau type and the parameters appearing in the theory are determined.
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U2 - 10.1080/10587259508033572
DO - 10.1080/10587259508033572
M3 - Article
AN - SCOPUS:0029237816
SN - 1058-725X
VL - 263
SP - 81
EP - 92
JO - Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
IS - 1
ER -