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Título

Disclosing odd symmetry, strain driven magnetic response of Co on Pt/PMN-PT (0 1 1)

AutorFoerster, Michael; Fina, Ignasi CSIC ORCID CVN ; Finizio, Simone; Casals, Blai CSIC ORCID CVN; Mandziak, Anna; Fauth, François; Aballe, Lucía
Palabras claveMagnetoelastic effect
PMN-PT
Bipolar loops
Charge like response
Fecha de publicación27-feb-2019
EditorInstitute of Physics (Great Britain)
CitaciónJournal of Physics - Condensed Matter 31(8): 084003 (2019)
ResumenAn odd-symmetry magnetic response of multiferroic composites comprising ultrathin Co layers on Pt electrodes on [Pb(Mg0.33Nb0.67)O3](1−x)[PbTiO3] x (PMN-PT) (0 1 1) piezoelectric substrates is observed upon electrical poling of the PMN-PT substrates: the magnetic easy axis of the Co rotates by 90° in-plane between oppositely poled ferroelectric states, mimicking the signature of a surface polarization charge driven effect, which however can be excluded from the presence of the thick Pt interlayer. The origin for this unexpected behavior is as an odd symmetry piezoelectric response of the PMN-PT substrate, as indicated by x-ray diffraction with applied poling, in combination with conventional magnetoelastic coupling. Ferroelectric characterization reveals corresponding features, possibly related to an unswitchable polarization component.
Versión del editorhttp://dx.doi.org/10.1088/1361-648X/aaf7ee
URIhttp://hdl.handle.net/10261/202299
ISSN0953-8984
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