Open AccessIrreversible extinction of ferroelectric polarization in P(VDF-TrFE) thin films upon melting and recrystallization
Author(s) -
Youn Jung Park,
Seok Ju Kang,
Cheolmin Park,
Kap Jin Kim,
Han Sup Lee,
Moon Sook Lee,
UIn Chung,
In Jun Park
Publication year - 2006
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.2207831
Subject(s) - ferroelectricity , materials science , recrystallization (geology) , polarization (electrochemistry) , melting point , electrode , thin film , scattering , condensed matter physics , optics , composite material , optoelectronics , nanotechnology , dielectric , chemistry , paleontology , physics , biology
We observed the irreversible extinction of ferroelectric polarization in spun coated poly(vinylidene fluoride-co-trifluoroethylene) thin films upon melting and recrystallization. We investigate the alteration of the ferroelectric properties correlated with the preferred polymer crystal orientation with respect to the electrodes using grazing incident scattering, spectroscopy, and electron microscopes. Heat treatment above melting point gave rise to the significant reduction of the ferroelectric performance mainly caused by the modification of molecular orientation of polymer crystals whose c and b axes are perpendicular and parallel to the electrode surface, respectively, leading to almost zero effective electric field. (c) 2006 American Institute of Physicsopen464
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