TY  - THES
A1  - Wegener, Michael
T1  - Polungsverhalten und Depolarisierung ferroelektrischer und nicht ferroelektrischer Polymere
Y1  - 1999
CY  - Potsdam
ER  - 
TY  - JOUR
A1  - Frübing, Peter
A1  - Wegener, Michael
A1  - Gerhard, Reimund
A1  - Buchsteiner, Alexandra
A1  - Neumann, Werner
A1  - Brehmer, Ludwig
T1  - Different molecular mechanisms for the dielectric hysteresis and pyroelectricity in a poly(vinyl alcohol) with azobenzene-alkoxy side chains
N2  - By means of pyroelectrical measurements and dielectric spectroscopy as well as structural information from differential scanning calorimetry, it is shown that, in a poly(vinyl alcohol) with azobenzene-alkoxy side chains, pyroelctricity and dielectric hysteresis which are usually related to each other have different origins. The pyroelectric effect is explained with reversible dipole-density changes upon thermal expansion, whereas the dielectric hysteresis is proposed to result from a charge-carrier polarisation.
Y1  - 1999
SN  - 0277-786X
ER  - 
TY  - JOUR
A1  - Wegener, Michael
A1  - Bauer, Siegfried
A1  - Gerhard, Reimund
T1  - Apparent dielectric hysteresis without significant dipolar movement?
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Frübing, Peter
A1  - Wegener, Michael
A1  - Gerhard, Reimund
A1  - Buchsteiner, Alexandra
A1  - Neumann, Werner
A1  - Brehmer, Ludwig
A1  - Dietel, Reinhard
T1  - Pyroelectric properties and dielectric hysteresis of a poly(vinylalcohol) with azobenzene alkoxy side chains
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Gerhard, Reimund
A1  - Wegener, Michael
A1  - Künstler, Wolfgang
A1  - Wirges, Werner
A1  - Görne, Thomas
A1  - Urayama, D.
A1  - Neher, Dieter
T1  - Inverse piezoelectricity of porous PTFE films with bipolar space charge
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Weinhold, Till
A1  - Wegener, Michael
A1  - Künstler, Wolfgang
A1  - Seiß, Martin
A1  - Görne, Thomas
A1  - Gerhard, Reimund
T1  - Porous polytetrafluoroethylene (PTFE) single-film space-charge electrets with high piezoelectric coefficients
Y1  - 2000
SN  - 0537-9989
ER  - 
TY  - JOUR
A1  - Wegener, Michael
A1  - Wirges, Werner
A1  - Richter, Kristin
A1  - Künstler, Wolfgang
A1  - Gerhard, Reimund
T1  - Charge stability and piezoelectric properties of porous fluoro-polymer space-charge electrets in layer systems
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Paajanen, Mika
A1  - Wegener, Michael
A1  - Gerhard, Reimund
T1  - Charging of cellular space-charge electret films in various gas atmospheres
Y1  - 2001
SN  - 0-7803-7053-8
ER  - 
TY  - JOUR
A1  - Paajanen, Mika
A1  - Wegener, Michael
A1  - Gerhard, Reimund
T1  - Understanding the role of the gas in the voids during corona charging of cellular electret films : a way to enhance their piezoelectricity
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Mellinger, Axel
A1  - Wegener, Michael
A1  - Wirges, Werner
A1  - Gerhard, Reimund
T1  - Thermally stable dynamic piezoelectricity in sandwich films of porous and non-porous amorphous fluoropolymer
Y1  - 2001
ER  -