Polarization Switching Dynamics of Vinylidene Fluoride/Trifluoroethylene Copolymer Thin Films under High Electric Field at Various Temperatures

被引：8
|
作者：
Ishii, Hajime [1 ]
Nakajima, Takashi [2 ]
Furukawa, Takeo [3 ]
Okamura, Soichiro [1 ]
机构：
[1] Tokyo Univ Sci, Fac Sci, Dept Appl Phys, Shinjuku Ku, Tokyo 1628601, Japan
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[3] Kobayashi Inst Phys Res, Kokubunji, Tokyo 1850022, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2013年 / 52卷 / 04期
关键词：
FLUORIDE TRIFLUOROETHYLENE COPOLYMERS; FERROELECTRIC POLYMERS; NONVOLATILE MEMORIES; TIME; THICKNESS; CRYSTALS; DEVICES; BATIO3;
D O I：
10.7567/JJAP.52.041603
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The polarization switching times of vinylidene fluoride (VDF)/trifluoroethylene (TrFE) copolymer thin films with a thickness of 40nm were measured at temperatures ranging from similar to 50 to 50 degrees C and applied fields ranging from 75 to 600 MV/m. The switching time was drastically reduced by increasing the applied field at all temperatures. The relationship between the switching time and the reciprocal applied field obeyed the exponential law in the low-field region and the power law in the high-field region. The threshold field between the exponential law and the power law became monotonically lower with decreasing temperature. Furthermore, the exponent value in the power law increased with decreasing temperature. This seems to be caused by a change in domain growth from two-dimensional-like to three-dimensional-like or in nucleation mechanism with decreasing temperature. (C) 2013 The Japan Society of Applied Physics
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页数：4
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