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Title: Dielectric anomaly and magnetic response of epitaxial orthorhombic YMnO3 thin films
Author: Martí, X.
Skumryev, Vassil Hristov
Laukhin, Vladimir
Sánchez Barrera, Florencio
García-Cuenca Varona, María Victoria
Ferrater Martorell, Cèsar
Varela Fernández, Manuel, 1956-
Fontcuberta i Griñó, Josep
Keywords: Pel·lícules fines
Propietats magnètiques
Thin films
Magnetic properties
Issue Date: 2007
Publisher: Materials Research Society
Abstract: The structure, magnetic response, and dielectric response of the grown epitaxial thin films of the orthorhombic phase of YMnO3 oxide on Nb:SrTiO3 (001) substrates have been measured. We have found that a substrate-induced strain produces an in-plane compression of the YMnO3 unit cell. The magnetization versus temperature curves display a significant zero-field cooling (ZFC)-field cooling hysteresis below the Nel temperature (TN 45 K). The dielectric constant increases gradually (up to 26%) below the TN and mimics the ZFC magnetization curve. We argue that these effects could be a manifestation of magnetoelectric coupling in YMnO3 thin films and that the magnetic structure of YMnO3 can be controlled by substrate selection and/or growth conditions.
Note: Reproducció del document original publicat a:
It is part of: Journal of Materials Research, 2007, num. 22, núm. 8, p. 2096-2101
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ISSN: 0884-2914
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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