Magnetoelectric coupling in epitaxial orthorhombic YMnO3 thin films

X. Marti; V. Skumryev; V. Laukhin; F. Sanchez; M. V. Garcia-Cuenca; C. Ferrater; M. Varela; J. Fontcuberta

Magnetoelectric coupling in epitaxial orthorhombic YMnO3 thin films

Strongly Correlated Electrons 2007-05-23 v1 Materials Science

Authors: X. Marti , V. Skumryev , V. Laukhin , F. Sanchez , M. V. Garcia-Cuenca , C. Ferrater , M. Varela , J. Fontcuberta

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Abstract

We have grown epitaxial thin-films of the orthorhombic phase of YMnO3 oxide on Nb:SrTiO3(001) substrates and their structure, magnetic and dielectric response have been measured. We have found that a substrate-induced strain produces an in-plane compression of the YMnO3 unit cell. The temperature-dependent magnetization curves display a significant ZFC-FC hysteresis at temperatures below the Neel temperature (TN around 40K). The dielectric constant increases gradually (up to 26%) below TN and mimics the ZFC magnetization curve. We argue that these effects are a manifestation of magnetoelectric coupling in thin films and that the magnetic structure of YMnO3 can be controlled by substrate selection.

Keywords

magnetoelectric coupling YMnO3 thin films epitaxial growth dielectric response magnetization

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@article{arxiv.cond-mat/0701387,
  title  = {Magnetoelectric coupling in epitaxial orthorhombic YMnO3 thin films},
  author = {X. Marti and V. Skumryev and V. Laukhin and F. Sanchez and M. V. Garcia-Cuenca and C. Ferrater and M. Varela and J. Fontcuberta},
  journal= {arXiv preprint arXiv:cond-mat/0701387},
  year   = {2007}
}

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Magnetoelectric coupling in epitaxial orthorhombic YMnO3 thin films

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