Dielectric Relaxation Behavior and Thickness Dependent Phase Transition of a Ferroelectric Liquid Crystal
スポンサーリンク
概要
- 論文の詳細を見る
Dielectric relaxation behavior of a ferroelectric liquid crystal (Felix-15/100) showing SmC*–SmA phase transition have been reported. Thickness dependent dielectric constant measured by varying the cell thickness (${\sim}6$, 11, 18, 36, 59 and 79 μm) showed increase of dielectric constant and the ferroelectric transition (Curie temperature $T_{\text{C}}$) with increase of cell thickness. The observed non-linear variation of $T_{\text{C}}$ as a function of thickness is better described by an empirical formula of the form $T_{x}=T_{\text{C}}-\gamma d^{-\beta}$ (where $\beta$ and $\gamma$ are sample dependent parameters). Since $d$ is related to the domain width, different values of $\beta$ and $\gamma$ are related to the domain width and hence with the dipolar ordering. Different values of the sample dependent parameters $\beta$ and $\gamma$ may, therefore, be considered as a measure of molecular ordering (depending on molecular interaction) which causes the change of $T_{\text{C}}$ with thickness. It is thus concluded that the values of $\beta$ and $\gamma$ should be related to the dipolar interaction in the ferroelectric system under consideration.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-07-15
著者
-
Chaudhuri B.
Department Of Materials Science And Technology Faculty Of Science And Technology Hirosaki University
-
SUZUKI K.
Technical Research Institute, Toppan Printing Co. LTD.
-
Kundu Shyamal
Department of Physics, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan
関連論文
- Thermopower of YBa_2Cu_(CdS)_zO_ with z=0-0.8 and Phonon Drag Effect
- Dielectric Relaxation Behavior and Thickness Dependent Phase Transition of a Ferroelectric Liquid Crystal
- Broadband Dielectric Spectroscopy of Ferroelectric Liquid Crystal
- AC Conductivity of Amorphous Fe_2O_3-Bi_3O_3 Oxide Glasses
- Dielectric Relaxation Behavior and Thickness Dependent Phase Transition of a Ferroelectric Liquid Crystal
- Shift of the Hysteresis Inversion Frequency with Temperature in a Surface Stabilized Ferroelectric Liquid Crystal Cell