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High-temperature polymer based magnetoelectric nanocomposites

Author:
A. Maceiras  P. Martins  R. Gonçalves  G. Botelho  E. Venkata Ramana  S.K. Mendiratta  M. San Sebastián  J.L. Vilas  S. Lanceros-Mendez  L.M. León  


Journal:
European Polymer Journal


Issue Date:
2015


Abstract(summary):

Graphical abstract Highlights • High temperature magnetoelectric polymer base composites are reported. • The nanocomposite is based on polyimides and CoFe 2 O 4 nanoparticles. • The magnetization response is determined by the CFO nanoparticle content. • The piezoelectric response of the 0CN2CN polymer matrix is ≈11 pC N −1 . • The α 33 value (0.8 mV cm −1 Oe −1 ) is stable over time and decrease above 130 °C. Abstract The use of polymer based magnetoelectric materials for sensing and actuation applications has been the subject of increasing scientific and technological interest. One of the drawbacks to be overcome in this field is to increase the temperature range of application above 100 °C. In this way, a nanocomposite material composed by a mixture of two aromatic diamines, 1,3-bis-2-cyano-3-(3 aminophenoxy)phenoxybenzene (diamine 2CN) and 1,3-bis(3-aminophenoxy)benzene (diamine 0CN) and CoFe 2 O 4 (CFO) nanoparticles was designed, fabricated and successfully tested for high temperature magnetoelectric applications. Results revealed that CFO nanoparticles are well distributed within the 0CN2CN polymer matrix and that the addition of CFO nanoparticles does not significantly alter the polyimides structure. The magnetization response of the composite is determined by the CFO nanoparticle content. The piezoelectric response of the 0CN2CN polymer matrix (≈11 pC N −1 ) and the maximum α 33 value (0.8 mV cm −1 Oe −1 ) are stable over time and decrease only when the composite is subjected to temperatures above 130 °C. Strategies to further improve the ME response are also discussed.


Page:
224-224


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