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TitleNovel anisotropic magnetoelectric effect on δ-FeO(OH)/P(VDF-TrFE) multiferroic composites
Author(s)Martins, Pedro Libânio Abreu
Larrea, A.
Gonçalves, R.
Botelho, Gabriela
Ramana, E. V.
Mendiratta, S. K.
Sebastian, V.
Lanceros-Méndez, S.
Issue date2015
PublisherAmerican Chemical Society
JournalACS Applied Materials and Interfaces
CitationMartins, P., Larrea, A., Gonçalves, R., Botelho, G., Ramana, E. V., Mendiratta, S. K., . . . Lanceros-Mendez, S. (2015). Novel anisotropic magnetoelectric effect on δ-FeO(OH)/P(VDF-TrFE) multiferroic composites. ACS Applied Materials and Interfaces, 7(21), 11224-11229. doi: 10.1021/acsami.5b01196
Abstract(s)The last decade has witnessed an increased research effort on multi-phase magnetoelectric (ME) composites. In this scope, this paper presents the application of novel materials for the development of anisotropic magnetoelectric (ME) sensors based on δ-FeO(OH)/P(VDF-TrFE) composites. The composite is able to precisely determine the amplitude and direction of the magnetic field. A new ME effect is reported in this study, as it emerges from the magnetic rotation of the δ-FeO(OH) nanosheets inside the piezoelectric P(VDF-TrFE) polymer matrix. δ-FeO(OH)/P(VDF-TrFE) composites with 1, 5, 10 and 20 δ-FeO(OH) filler weigh percentage in three δ-FeO(OH) alignment states (random, transversal and longitudinal) have been developed. Results shown that the modulus of the piezoelectric response (10-24 pC.N-1) is stable at least up to three months, the shape and magnetization maximum value (3 emu.g-1) is dependent on δ-FeO(OH) content and the obtained ME voltage coefficient, with a maximum of ≈0.4, is dependent on the incident magnetic field direction and intensity. In this way, the produced materials are suitable for innovative anisotropic sensor and actuator applications.
AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)
CDQuim - Artigos (Papers)

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