Space charge and dipoles in polyvinylidenefluoride

dc.creator	Eisenmenger W.
dc.creator	Schmidt H.
dc.creator	Dehlen B.
dc.date	1999
dc.date.accessioned	2013-05-29T22:59:50Z
dc.date.available	2013-05-29T22:59:50Z
dc.date.issued	2013-05-30
dc.identifier	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97331999000200011
dc.identifier	http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=1999&volume=29&issue=2&spage=295
dc.identifier.uri	http://koha.mediu.edu.my:8181/jspui/handle/123456789/2585
dc.description	The properties of space charge (homocharge) and dipoles (heterocharge) in various electrets have been in the focus of interest since the investigations of B. Gross on carnauba wax. In this article we present a review on the role and the interaction of charges and dipoles in the polymeric electret polyvinylidenefluoride (PVDF). It covers the importance of charge injection for the orientation of the dipoles at low fields as well as the role of charge trapping for the stabilization of the polarization. Investigations of the thermal stability of the polarization and the charge balance are leading to a detailed analysis of the depth and localization of the charge traps. Furthermore, it was possible to identify the space charge as ions created electrochemically during the poling process.
dc.publisher	Sociedade Brasileira de Física
dc.source	Brazilian Journal of Physics
dc.title	Space charge and dipoles in polyvinylidenefluoride

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