Please use this identifier to cite or link to this item:
|Title:||Internal fields in PT/PVDF-TrFE 0-3 composites|
|Source:||ISAF 2000 : proceedings of the 2000 12th IEEE International Symposium on Applications of Ferroelectrics, Honolulu, Hawaii, U.S.A, July 21-August 2, 2000, p. 301-304 How to cite?|
|Abstract:||Composites of ferroelectrics have a promising potential for applications, as it is possible to obtain new properties by combining two different ferroelectric materials. The spontaneous polarization of lead titanate (PT) is about an order of magnitude higher than that of vinylidenefluoride-trifluoroethylene copolymer (PVDF-TrFE). Therefore, in order to polarize the PT inclusions in a PT/PVDF-TrFE 0-3 composite, the depolarizing field must be compensated to a large extent by a counter field due to charge accumulated at the interface between the matrix and inclusions. An internal field will arise within the composite when the accumulated charge is insufficient to generate a fully compensating counter field. To demonstrate the existence of such an internal field we have studied the pyroelectric activity of composites with 27 volume % of PT in 56/44 mol % PVDF-TrFE. In the temperature range around the ferroelectric phase transition of the copolymer, induced pyroelectric activity is observed. The internal field can be estimated from an analysis of the pyroelectric activity of the composite.|
|Rights:||© 2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
|Appears in Collections:||Conference Paper|
Show full item record
Citations as of Feb 25, 2017
Checked on Feb 26, 2017
Checked on Feb 26, 2017
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.