Multiferroicity in an orthorhombic YMnO3 single-crystal film

Perovskitelike RMnO3 (R: rare-earth) exhibits large magnetoelectric effects because of the intimate correlation between magnetic and ferroelectric orders. However, reproducing the multiferroic properties in thin films has been far from straightforward due to the difficulty in the growth of single-cr...

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Bibliographic Details
Published in:Applied physics letters 2011-02, Vol.98 (8)
Main Authors: Nakamura, Masao, Tokunaga, Yusuke, Kawasaki, Masashi, Tokura, Yoshinori
Format: Article
Language:English
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Summary:Perovskitelike RMnO3 (R: rare-earth) exhibits large magnetoelectric effects because of the intimate correlation between magnetic and ferroelectric orders. However, reproducing the multiferroic properties in thin films has been far from straightforward due to the difficulty in the growth of single-crystal films caused by the large orthorhombic distortion in RMnO3. We could overcome the problem and achieve the fabrication of a monodomain single-crystal film of orthorhombic YMnO3 by choosing (0 1 0)-YAlO3 as a substrate. The film showed a ferroelectric transition at 40 K with a saturation polarization of 0.8 μC/cm2. The ferroelectric polarization could be modified by magnetic fields, evidencing the multiferroic state in the film.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3555462