Abstract
In this study, a sonochemical reactor was used to synthesize Mn1−xCuxLa0.1Fe1.9O4 nanoferrites with different compositions of x (0.09, 0.18, 0.27, and 0.36). Mn1−xCuxLa0.1Fe1.9O4 nanoferrites were subjected to X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), vibrating sample magnetometer, and electrochemical impedance spectroscopy to investigate their magnetic, electrical, and structural properties. Formation of a cubic crystalline structure was observed by the XRD patterns. The decreases in crystalline size could have been caused by an increase in Cu2+ ions in Mn1−xCuxLa0.1Fe1.9O4 nanoferrites. The impedance analysis revealed the presence of pseudocapacitance and resistive behavior in Mn1−xCuxLa0.1Fe1.9O4 nanoferrites. The hysteresis loops promoted the soft ferromagnetic behavior present in Mn1−xCuxLa0.1Fe1.9O4 nanoferrites. A decrease in saturation magnetization and an increase in coercivity were observed with an increase in the Cu2+ content of Mn1−xCuxLa0.1Fe1.9O4 nanoferrites.
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