skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ferroelectric to paraelectric phase transition mechanism in poled PVDF-TrFE copolymer films

Abstract

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]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [3]; ORCiD logo [3]
  1. City Univ. of Hong Kong (China)
  2. Alfred Univ., NY (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Juelich Centre for Neutron Scattering (JCNS-1), Forschungszentrum Juelich (Germany)
Publication Date:
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)
OSTI Identifier:
1432144
Alternate Identifier(s):
OSTI ID: 1408164
Grant/Contract Number:
AC05-00OR22725
Resource Type:
Journal Article: 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)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

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., 2017. 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. Wed . "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 = {Wed Nov 01 00:00:00 EDT 2017},
month = {Wed Nov 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 1, 2018
Publisher's Version of Record

Save / Share: