Abstract
Ferromagnetic EuO multilayered films (MLs) were fabricated with nonmagnetic oxides such as MgO, ZrO2, and Y2O3. The EuO MLs showed increased Curie temperature (Tc) and metal insulator transition temperature (Tmi) than the bulk values due to oxygen deficiency. However, Eu151 Mössbauer spectra did not exhibit such an anomaly in Tc. It suggests a field induced magnetic component in the MLs. Significant increase of coercive force (Hc) with decreasing EuO layer thickness was observed only in EuO/MgO MLs. It was suggested that this increase was originated from a kind of interface effect.
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