Magnetic Annealing Effects on the Properties of Multilayer BaTiO3/CoFe2O4 Thin Films

다국어 초록 (Multilingual Abstract)

Multilayer BaTiO3/CoFe2O4 thin films are prepared via a chemical solution deposition methodwith and without magnetic annealing, respectively. The microstructural, magnetic, dielectric andferroelectric properties of the films’ are investigated. The dielectric constant, polarization andmagnetization of the multilayer thin films are improved with magnetic annealing. Moreover, forthe magnetic annealing films, the saturation magnetization measured with the measuring magneticfield vertical to the film surface is much higher than that measured with the field parallel to thefilm surface. These novel phenomena may be caused by the decrease in the clamping of the BaTiO3layer and the arrangement of the induced easy axis in the CoFe2O4 layer caused by the appliedannealing field.

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