Abstract
In this work, switching dynamics of poly(vinylidene fluoride- trifluoroethylene) [P(VDF-TrFE)] copolymer films are investigated over unprecedentedly wide ranges of temperature and electric field. Remarkably, domain switching of copolymer films obeys well the classical domain nucleation and growth model although the origin of ferroelectricity in organic ferroelectric materials inherently differs from the inorganic counterparts. A lower coercivity limit of 50â €...MV/m and 180° domain wall energy of 60â €...mJ/m 2 are determined for P(VDF-TrFE) films. Furthermore, we discover in copolymer films an anomalous temperature-dependent crossover behavior between two power-law scaling regimes of frequency-dependent coercivity, which is attributed to the transition between flow and creep motions of domain walls. Our observations shed new light on the switching dynamics of semi-crystalline ferroelectric polymers, and such understandings are critical for realizing their reliable applications.
| Original language | English |
|---|---|
| Article number | 4772 |
| Journal | Scientific reports |
| Volume | 4 |
| DOIs | |
| Publication status | Published - 2014 Apr 24 |
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All Science Journal Classification (ASJC) codes
- General
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Universal ferroelectric switching dynamics of vinylidene fluoride-trifluoroethylene copolymer films. / Hu, Wei Jin; Juo, Deng Ming; You, Lu; Wang, Junling; Chen, Yi Chun; Chu, Ying Hao; Wu, Tom.
In: Scientific reports, Vol. 4, 4772, 24.04.2014.Research output: Contribution to journal › Article
TY - JOUR
T1 - Universal ferroelectric switching dynamics of vinylidene fluoride-trifluoroethylene copolymer films
AU - Hu, Wei Jin
AU - Juo, Deng Ming
AU - You, Lu
AU - Wang, Junling
AU - Chen, Yi Chun
AU - Chu, Ying Hao
AU - Wu, Tom
PY - 2014/4/24
Y1 - 2014/4/24
N2 - In this work, switching dynamics of poly(vinylidene fluoride- trifluoroethylene) [P(VDF-TrFE)] copolymer films are investigated over unprecedentedly wide ranges of temperature and electric field. Remarkably, domain switching of copolymer films obeys well the classical domain nucleation and growth model although the origin of ferroelectricity in organic ferroelectric materials inherently differs from the inorganic counterparts. A lower coercivity limit of 50â €...MV/m and 180° domain wall energy of 60â €...mJ/m 2 are determined for P(VDF-TrFE) films. Furthermore, we discover in copolymer films an anomalous temperature-dependent crossover behavior between two power-law scaling regimes of frequency-dependent coercivity, which is attributed to the transition between flow and creep motions of domain walls. Our observations shed new light on the switching dynamics of semi-crystalline ferroelectric polymers, and such understandings are critical for realizing their reliable applications.
AB - In this work, switching dynamics of poly(vinylidene fluoride- trifluoroethylene) [P(VDF-TrFE)] copolymer films are investigated over unprecedentedly wide ranges of temperature and electric field. Remarkably, domain switching of copolymer films obeys well the classical domain nucleation and growth model although the origin of ferroelectricity in organic ferroelectric materials inherently differs from the inorganic counterparts. A lower coercivity limit of 50â €...MV/m and 180° domain wall energy of 60â €...mJ/m 2 are determined for P(VDF-TrFE) films. Furthermore, we discover in copolymer films an anomalous temperature-dependent crossover behavior between two power-law scaling regimes of frequency-dependent coercivity, which is attributed to the transition between flow and creep motions of domain walls. Our observations shed new light on the switching dynamics of semi-crystalline ferroelectric polymers, and such understandings are critical for realizing their reliable applications.
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U2 - 10.1038/srep04772
DO - 10.1038/srep04772
M3 - Article
AN - SCOPUS:84899485367
VL - 4
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 4772
ER -