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Converse magnetoelectric effects in Fe3O4/BaTiO3 multiferroic hybrids

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2013

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Geprägs, Stephan
Mannix, Dan
Opel, Matthias
Gross, Rudolf

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https://doi.org/10.1103/PhysRevB.88.054412
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http://arxiv.org/abs/1304.6315

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Physical Review B. American Physical Society (APS). 2013, 88(5), 054412. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.88.054412

Zusammenfassung

The quantitative understanding of converse magnetoelectric effects, i.e., the variation of the magnetization as a function of an applied electric field, in extrinsic multiferroic hybrids is a key prerequisite for the development of future spintronic devices. We present a detailed study of the strain-mediated converse magnetoelectric effect in ferrimagnetic Fe3O4 thin films on ferroelectric BaTiO3 substrates at room temperature. The experimental results are in excellent agreement with numerical simulation based on a two-region model. This demonstrates that the electric field induced changes of the magnetic state in the Fe3O4 thin film can be well described by the presence of two different ferroelastic domains in the BaTiO3 substrate, resulting in two differently strained regions in the Fe3O4 film with different magnetic properties. The two-region model allows to predict the converse magnetoelectric effects in multiferroic hybrid structures consisting of ferromagnetic thin films on ferroelastic substrates.

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ISO 690GEPRÄGS, Stephan, Dan MANNIX, Matthias OPEL, Sebastian T. B. GOENNENWEIN, Rudolf GROSS, 2013. Converse magnetoelectric effects in Fe3O4/BaTiO3 multiferroic hybrids. In: Physical Review B. American Physical Society (APS). 2013, 88(5), 054412. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.88.054412
BibTex
@article{Geprags2013-04-23T15:12:35ZConve-52440,
  year={2013},
  doi={10.1103/PhysRevB.88.054412},
  title={Converse magnetoelectric effects in Fe<sub>3</sub>O<sub>4</sub>/BaTiO<sub>3</sub> multiferroic hybrids},
  number={5},
  volume={88},
  issn={2469-9950},
  journal={Physical Review B},
  author={Geprägs, Stephan and Mannix, Dan and Opel, Matthias and Goennenwein, Sebastian T. B. and Gross, Rudolf},
  note={Article Number: 054412}
}
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