3 years ago

Optimized Magnetodielectric Coupling on High-Temperature Polymer-Based Nanocomposites

Optimized Magnetodielectric Coupling on High-Temperature
Polymer-Based Nanocomposites
T. Marinho, P. Martins, A. Maceiras, Enrique Carbó-Argibay, José Luis Vilas, S. Lanceros-Mendez, Yury V. Kolen’ko
CoFe2O4 (CFO) ferrite nanoparticles with an average size of 15 nm were synthesized by a hydrothermal method and used to develop magnetodielectric (MD) composites with the piezoelectric copolyimide 2CN/0CN as polymer matrix. It is shown that the dielectric constant, dielectric loss, and saturation magnetization values of the composites increase with the increasing CFO content, being 4.4, 0.01, and 12 emu·g–1, respectively, for the sample with 20 weight percentage (wt %) of ferrite. Additionally the large MD effect response (MDE(%) = 10.15) and magnetodielectric coefficient (γ = 5.8 × 10–2) allow a new physical insight into the magneto-mechano-electrical interaction between magnetostrictive CFO and the polymer matrix. Such high MD response, the highest reported for polymer-based composite materials, can support innovative applications in the areas of sensors, actuators, and filters, among others.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b09395

DOI: 10.1021/acs.jpcc.7b09395

You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.