Nanoscale Structural Engineering of Ferroelectric Polymers. Final Report for July 2001-June 2005

Adenwalla, S.

University of Nebraska-Lincoln, Lincoln, NE

关键词: Thermodynamics;    Nanostructures;    Electrodes;    Ferroelectric Materials;    36 Materials Science;   

DOI  :  10.2172/876679
RP-ID  :  None
RP-ID  :  FG02-01ER45891
RP-ID  :  876679

美国|英语

来源: UNT Digital Library

【 摘 要 】

This final report describes the interaction between multilavered films of polymer ferroelectrics, in our case the copolymers of PVDF formed with TrFE. Langmuir Blodgett deposition of these films allows the deposition of thin, uniform, highly crystalline films. Two type of multilayer stacks are made and characterized. The first consists of multilayer stacks of the copolymer films with 2 different TrFE contents-50% and 20%. By varying the period of the multilayer stacks we see evidence of interaction at short length scales, evidenced in the thermodynamic transition temperatures of the multilayer films. The second set consists of a P(VDF - TrFE) film sandwiched between two Cobalt electrodes. In these we see evidence of a large magnetoelectric coupling.