Transport and magnetic properties of Co-doped BaFe2As2 epitaxial thin films
Abstract
We report resistivity, Hall coefficient, current-voltage characteristics, and magneto-optical imaging measurements of epitaxial Co-doped BaFe2As2 thin films deposited on MgO(001) substrate. The Hall resistivity of the films has a substantial contribution arising from anomalous Hall effect of ferromagnetic components. The critical current density (Jc) of the films is ~2 MA/cm2 at low temperatures. Differential magneto-optical images of the remanent state give similar Jc values and also exhibit presence of extended defects in the film.
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