Sm A - ferroelectric-Sm C transition in the mixture of C7+10.O.4 and in the ferroelectric C7

被引：0

作者：

Aksoy, S. ^{[1
]}

Kurt, M. ^{[1
]}

Yurtseven, H. ^{[2
]}

机构：

[1] Canakkale 18 Mart Univ, Dept Phys, Canakkale, Turkey

[2] Middle East Tech Univ, Dept Phys, Ankara, Turkey

来源：

FERROELECTRICS | 2020年 / 554卷 / 01期

关键词：

Tilt angle; dielectric constant; Sm A - Sm C* transition; C7+10.O.4; C7; AC PHASE-CHANGE; LIQUID-CRYSTALS; ELECTRIC-FIELD; MEAN-FIELD; SUSCEPTIBILITY; BEHAVIOR; MODEL;

D O I：

10.1080/00150193.2019.1684762

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tilt angle and the dielectric constant (susceptibility ) as functions of the field strength and temperature, respectively are calculated from the Landau phenomenological model and they are fitted to the observed data from the literature for the Sm A - Sm C* transition in the mixture of C7 + 10.O.4. Values of the critical exponents for the order parameters (tilt angle and polarization P) and tilt angle susceptibility of C7 and of the (dielectric constant) of the mixture C7 + 10.O.4 close to are extracted from the power-law formula. Our results indicate a second-order and a weakly first-order Sm A - Sm C* transitions for C7 + 10.O.4 and C7, respectively as also observed experimentally.

引用

页码：21 / 29

页数：9

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