期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 107, 期 6, 页码 3945-3949出版社
JOHN WILEY & SONS INC
DOI: 10.1002/app.27527
关键词
fatigue analysis; ferroelectricity; fluoropolymers; temperature dependence
In this study, we report the temperature dependence of polarization fatigue in ferroelectric copolymer films. Studies on temperature effect show a non-monotonic change of fatigue rate with increasing temperature. At temperature below similar to 90 degrees C, fatigue endurance is weakened at higher temperature; while, at temperature above similar to 90 degrees C, experimental data indicate that the higher the temperature, the lower the fatigue rate. X-ray diffraction spectra reveal little changes of characteristic peak before and after polarization fatigue. On the basis of the hypothesis of charge-injection-induced fatigue, we propose a possible explanation of our experimental results. (C) 2007 Wiley Periodicals, Inc.
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