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Giant magnetoelectric effects in pseudo 1–3 heterostructure films with FeGa nanocluster-assembled micron-scale discs embedded into Bi5Ti3FeO15 matrices

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Abstract

Nanocluster-assembled FeGa micron-scale discs prepared by low-energy cluster beam deposition were embedded into Bi5Ti3FeO15 matrices to form pseudo 1–3 heterostructure films. The microstructures and multiferroic properties were investigated. Good ferroelectric, piezoelectric, and ferromagnetic properties and giant magnetoelectric effects are achieved for the heterostructure films, which is ascribed to the depression of the clamped effect from the hard substrate for such pseudo 1–3 structures and the multi-interface coupling between the large magnetostrictive coefficient of FeGa micron-scale discs and the high piezoelectric coefficient of the circle surrounding the Bi5Ti3FeO15 matrices. Such a strong interface strain coupling between the micron discs and the inhomogeneously multiferroic matrices induces obvious magnetoelectric coupling behaviors. Besides, the interaction between the ferroelectric domains and the spin orders in the multiferroic matrices also contributes to the magnetoelectric output. The present work provides a potential way to fabricate clamped-free magnetoelectric films for microdevice applications.

Graphical abstract: Giant magnetoelectric effects in pseudo 1–3 heterostructure films with FeGa nanocluster-assembled micron-scale discs embedded into Bi5Ti3FeO15 matrices

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Publication details

The article was received on 27 Dec 2017, accepted on 23 Feb 2018 and first published on 26 Feb 2018


Article type: Communication
DOI: 10.1039/C7NR09652F
Citation: Nanoscale, 2018, Advance Article
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    Giant magnetoelectric effects in pseudo 1–3 heterostructure films with FeGa nanocluster-assembled micron-scale discs embedded into Bi5Ti3FeO15 matrices

    Y. Bai, N. Jiang and S. Zhao, Nanoscale, 2018, Advance Article , DOI: 10.1039/C7NR09652F

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