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The Debye-like relaxation mechanism in poly(vinylidene fluoride-trifluoroethylene) ferroelectric polymers.
- Source :
- Journal of Applied Physics; Nov2009, Vol. 106 Issue 10, p104113-1-104113-4, 4p, 4 Graphs
- Publication Year :
- 2009
-
Abstract
- In this work we studied 65-nm-thick poly(vinylidene fluoride-trifluoroethylene) ferroelectric polymers films grown by Langmuir–Blodgett onto silicon substrates. Three dielectric anomalies have been unambiguously evidenced. The high temperature one near 380 K corresponds to the ferroelectric-paraelectric transition. The low temperature one near 270 K which is characterized by a β relaxation is attributed to structural defects in the crystalline phase leading to inhomogeneous strains detected by x-ray diffraction. At approximately 320 K, a Debye-like relaxation is clearly evidenced. Possible origins for this later relaxation are discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLYMERS
FERROELECTRICITY
POINT defects
RELAXATION phenomena
PHASE transitions
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 106
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 45515423
- Full Text :
- https://doi.org/10.1063/1.3259431