Improved magnetodielectric coefficient on polymer based composites through enhanced indirect magnetoelectric coupling

Flexible particulate composites with general formula [xCoFe2O4]/[(1 − x) (Polyvinylidene fluoride)] were prepared for x = 0, 3, 11, and 20 wt. %. The dielectric constant, dielectric loss, and saturation magnetization of the composites increase with the increasing CoFe2O4 content, being 13, 0.13, and...

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Veröffentlicht in:Applied physics letters 2016-09, Vol.109 (11)
Hauptverfasser: Martins, P., Silva, D., P. Silva, M., Lanceros-Mendez, S.
Format: Artikel
Sprache:eng
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Zusammenfassung:Flexible particulate composites with general formula [xCoFe2O4]/[(1 − x) (Polyvinylidene fluoride)] were prepared for x = 0, 3, 11, and 20 wt. %. The dielectric constant, dielectric loss, and saturation magnetization of the composites increase with the increasing CoFe2O4 content, being 13, 0.13, and 13 emu g−1, respectively, for x = 20. The change in the dielectric response (magnetodielectric effect (%)) is the highest among all the reported polymer-based composites for the x = 20 sample (4.2%), and on the contrary, the highest value of the magnetodielectric coefficient (γ) is higher on the x = 3 sample (0.015 emu−2 g2). Such features have large application potential in areas such as filters, magnetic field sensors and actuators, among others.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4963003