Multiferroic materials based on artificial thin film heterostructures

Geprägs, Stephan; Opel, Matthias; Goennenwein, Sebastian T. B.; Gross, Rudolf

Multiferroic materials based on artificial thin film heterostructures

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Datum

2007

Autor:innen

Geprägs, Stephan

Opel, Matthias

Goennenwein, Sebastian T. B.

Gross, Rudolf

DOI (zitierfähiger Link)

https://doi.org/10.1080/09500830701194165

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Philosophical Magazine Letters. Taylor & Francis. 2007, 87(3-4), pp. 141-154. ISSN 0950-0839. eISSN 1362-3036. Available under: doi: 10.1080/09500830701194165

Zusammenfassung

We discuss the use of thin film heterostructures for the generation of artificial multiferroic or magnetoelectric material systems. In this regard the transition metal oxides BiFeO₃ and BiCrO₃ are of particular interest. By using laser molecular beam epitaxy we have grown epitaxial thin films of these materials on SrTiO₃ substrates in a two-dimensional layer-by-layer growth mode. The films show small surface roughness and excellent crystallographic quality with mosaic spread below 0.04°. In contrast to the bulk materials, both BiFeO₃ and BiCrO₃ films have tetragonal crystal structure due to epitaxial coherency strain. The magnetic properties have been studied by SQUID magnetometry. In contrast to a previous report on BiFeO₃ we find only a small saturation magnetization below 0.05μ _B/formula unit both for BiFeO₃ and BiCrO₃, which can be explained by a canting of the antiferromagnetically aligned Fe and Cr spins, respectively. Furthermore, no indication for a strain induced enhancement of magnetization was found.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

GEPRÄGS, Stephan, Matthias OPEL, Sebastian T. B. GOENNENWEIN, Rudolf GROSS, 2007. Multiferroic materials based on artificial thin film heterostructures. In: Philosophical Magazine Letters. Taylor & Francis. 2007, 87(3-4), pp. 141-154. ISSN 0950-0839. eISSN 1362-3036. Available under: doi: 10.1080/09500830701194165

BibTex

@article{Geprags2007Multi-52525,
  year={2007},
  doi={10.1080/09500830701194165},
  title={Multiferroic materials based on artificial thin film heterostructures},
  number={3-4},
  volume={87},
  issn={0950-0839},
  journal={Philosophical Magazine Letters},
  pages={141--154},
  author={Geprägs, Stephan and Opel, Matthias and Goennenwein, Sebastian T. B. and Gross, Rudolf}
}

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