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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
; | | Date: |
16 Jan 2007 | | Subject: | Strongly Correlated Electrons; Materials Science | | 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. | | Source: | arXiv, cond-mat/0701387 | | Services: | Forum | Review | PDF | Favorites | |
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