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Development of magnetoelectric CoFe2O4 /poly(vinylidene fluoride) microspheres

Journal Article


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Abstract


  • Magnetoelectric microspheres based on piezoelectric poly(vinylidene fluoride) (PVDF) and magnetostrictive

    CoFe2O4 (CFO), a novel morphology for polymer-based ME materials, have been developed by an

    electrospray process. The CFO nanoparticle content in the (3–7 mm diameter) microspheres reaches

    values up to 27 wt%, despite their concentration in the starting solution reaching values up to 70 wt%.

    Additionally, the inclusion of magnetostrictive nanoparticles into the polymer spheres has no relevant

    effect on the piezoelectric b-phase content (z60%), crystallinity (40%) and the onset degradation

    temperature (460–465 C) of the polymer matrix. The multiferroic microspheres show a maximum

    piezoelectric response |d33| z 30 pC N1, leading to a magnetoelectric response of D|d33| z 5 pC N1

    obtained when a 220 mT DC magnetic field was applied. It is also shown that the interface between

    CFO nanoparticles and PVDF (from 0 to 55%) has a strong influence on the ME response of the

    microspheres. The simplicity and the scalability of the processing method suggest a large application

    potential of this novel magnetoelectric geometry in areas such as tissue engineering, sensors and actuators.

UOW Authors


  •   Goncalves, R (external author)
  •   Martins, P (external author)
  •   Correia, Daniela M. (external author)
  •   Gomes da Silva Sencadas, Vitor
  •   Vilas, J L. (external author)
  •   Leon, L M. (external author)
  •   Botelho, Gabriela (external author)
  •   Lanceros-Méndez, Senentxu (external author)

Publication Date


  • 2015

Citation


  • Goncalves, R., Martins, P., Correia, D. M., Sencadas, V., Vilas, J. L., Leon, L. M., Botelho, G. & Lanceros-Méndez, S. (2015). Development of magnetoelectric CoFe2O4 /poly(vinylidene fluoride) microspheres. RSC Advances: an international journal to further the chemical sciences, 5 (45), 35852-35857.

Scopus Eid


  • 2-s2.0-84928553968

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6282&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5255

Number Of Pages


  • 5

Start Page


  • 35852

End Page


  • 35857

Volume


  • 5

Issue


  • 45

Abstract


  • Magnetoelectric microspheres based on piezoelectric poly(vinylidene fluoride) (PVDF) and magnetostrictive

    CoFe2O4 (CFO), a novel morphology for polymer-based ME materials, have been developed by an

    electrospray process. The CFO nanoparticle content in the (3–7 mm diameter) microspheres reaches

    values up to 27 wt%, despite their concentration in the starting solution reaching values up to 70 wt%.

    Additionally, the inclusion of magnetostrictive nanoparticles into the polymer spheres has no relevant

    effect on the piezoelectric b-phase content (z60%), crystallinity (40%) and the onset degradation

    temperature (460–465 C) of the polymer matrix. The multiferroic microspheres show a maximum

    piezoelectric response |d33| z 30 pC N1, leading to a magnetoelectric response of D|d33| z 5 pC N1

    obtained when a 220 mT DC magnetic field was applied. It is also shown that the interface between

    CFO nanoparticles and PVDF (from 0 to 55%) has a strong influence on the ME response of the

    microspheres. The simplicity and the scalability of the processing method suggest a large application

    potential of this novel magnetoelectric geometry in areas such as tissue engineering, sensors and actuators.

UOW Authors


  •   Goncalves, R (external author)
  •   Martins, P (external author)
  •   Correia, Daniela M. (external author)
  •   Gomes da Silva Sencadas, Vitor
  •   Vilas, J L. (external author)
  •   Leon, L M. (external author)
  •   Botelho, Gabriela (external author)
  •   Lanceros-Méndez, Senentxu (external author)

Publication Date


  • 2015

Citation


  • Goncalves, R., Martins, P., Correia, D. M., Sencadas, V., Vilas, J. L., Leon, L. M., Botelho, G. & Lanceros-Méndez, S. (2015). Development of magnetoelectric CoFe2O4 /poly(vinylidene fluoride) microspheres. RSC Advances: an international journal to further the chemical sciences, 5 (45), 35852-35857.

Scopus Eid


  • 2-s2.0-84928553968

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6282&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5255

Number Of Pages


  • 5

Start Page


  • 35852

End Page


  • 35857

Volume


  • 5

Issue


  • 45