TY - JOUR
T1 - Polymer matrix ferroelectric composites under pressure
T2 - Negative electric capacitance and glassy dynamics
AU - Starzonek, Szymon
AU - Drozd-Rzoska, Aleksandra
AU - Rzoska, Sylwester J.
AU - Zhang, Kena
AU - Pawlikowska, Emilia
AU - Kȩdzierska-Sar, Aleksandra
AU - Szafran, Mikolaj
AU - Gao, Feng
N1 - Publisher Copyright:
© 2019, The Author(s).
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Abstract.: This report presents the results of high-pressure and broadband dielectric spectroscopy studies in polyvinylidene difluoride (PVDF) and barium strontium titanate (BST) microparticles composites (BST/PVDF). It shows that the Arrhenius behaviour for the temperature-related dynamics under atmospheric pressure is coupled to Super-Arrhenius/Super-Barus isothermal pressure changes of the primary relaxation time. Following these results, an explanation of the unique behaviour of the BST/PVDF composite is proposed. Subsequently, it is shown that when approaching the GPa domain the negative electric capacitance phenomenon occurs. Graphical abstract: [Figure not available: see fulltext.].
AB - Abstract.: This report presents the results of high-pressure and broadband dielectric spectroscopy studies in polyvinylidene difluoride (PVDF) and barium strontium titanate (BST) microparticles composites (BST/PVDF). It shows that the Arrhenius behaviour for the temperature-related dynamics under atmospheric pressure is coupled to Super-Arrhenius/Super-Barus isothermal pressure changes of the primary relaxation time. Following these results, an explanation of the unique behaviour of the BST/PVDF composite is proposed. Subsequently, it is shown that when approaching the GPa domain the negative electric capacitance phenomenon occurs. Graphical abstract: [Figure not available: see fulltext.].
KW - Soft Matter: Polymers and Polyelectrolytes
UR - https://www.scopus.com/pages/publications/85071896546
U2 - 10.1140/epje/i2019-11876-9
DO - 10.1140/epje/i2019-11876-9
M3 - 文章
C2 - 31493015
AN - SCOPUS:85071896546
SN - 1292-8941
VL - 42
JO - European Physical Journal E
JF - European Physical Journal E
IS - 9
M1 - 118
ER -