Ferroelectric to paraelectric phase transition mechanism in poled PVDF-TrFE copolymer films
Direct experimental insights into the structural and dynamical mechanisms for ferroelectric β to paraelectric α phase transition in a poled PVDF-TrFE copolymer is obtained from in situ x-ray diffraction and quasielastic neutron scattering measurements at high temperatures. It is observed that the β-to-α phase transition proceeds through two energetically distinct processes, which are identified here as the nucleation and growth of an intermediate γ phase with random skew linkages followed by a γ-to-α transition. The two energetically distinct microscopic processes can explain the stages of evolution for β-to-α phase transition observed from heat flow measurements.
- Authors:
-
[1]
; [2]
;
[3]
; [4]
; [3]
; [3]
- City Univ. of Hong Kong (China)
- Alfred Univ., NY (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Juelich Centre for Neutron Scattering (JCNS-1), Forschungszentrum Juelich (Germany)
- Publication Date:
- Grant/Contract Number:
- AC05-00OR22725
- Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 96; Journal Issue: 17; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Research Org:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
- OSTI Identifier:
- 1432144
- Alternate Identifier(s):
- OSTI ID: 1408164
Pramanick, A., T. Misture, Scott, Osti, Naresh C., Jalarvo, Niina H., Omar Diallo, Souleymane, and Mamontov, Eugene. Ferroelectric to paraelectric phase transition mechanism in poled PVDF-TrFE copolymer films. United States: N. p.,
Web. doi:10.1103/PhysRevB.96.174103.
Pramanick, A., T. Misture, Scott, Osti, Naresh C., Jalarvo, Niina H., Omar Diallo, Souleymane, & Mamontov, Eugene. Ferroelectric to paraelectric phase transition mechanism in poled PVDF-TrFE copolymer films. United States. doi:10.1103/PhysRevB.96.174103.
Pramanick, A., T. Misture, Scott, Osti, Naresh C., Jalarvo, Niina H., Omar Diallo, Souleymane, and Mamontov, Eugene. 2017.
"Ferroelectric to paraelectric phase transition mechanism in poled PVDF-TrFE copolymer films". United States.
doi:10.1103/PhysRevB.96.174103.
@article{osti_1432144,
title = {Ferroelectric to paraelectric phase transition mechanism in poled PVDF-TrFE copolymer films},
author = {Pramanick, A. and T. Misture, Scott and Osti, Naresh C. and Jalarvo, Niina H. and Omar Diallo, Souleymane and Mamontov, Eugene},
abstractNote = {Direct experimental insights into the structural and dynamical mechanisms for ferroelectric β to paraelectric α phase transition in a poled PVDF-TrFE copolymer is obtained from in situ x-ray diffraction and quasielastic neutron scattering measurements at high temperatures. It is observed that the β-to-α phase transition proceeds through two energetically distinct processes, which are identified here as the nucleation and growth of an intermediate γ phase with random skew linkages followed by a γ-to-α transition. The two energetically distinct microscopic processes can explain the stages of evolution for β-to-α phase transition observed from heat flow measurements.},
doi = {10.1103/PhysRevB.96.174103},
journal = {Physical Review B},
number = 17,
volume = 96,
place = {United States},
year = {2017},
month = {11}
}
Works referenced in this record:
Two-dimensional ferroelectric films
journal, February 1998
journal, February 1998
- Bune, A. V.; Fridkin, V. M.; Ducharme, Stephen
- Nature, Vol. 391, Issue 6670, p. 874-877