Abstract
Zn1−xCuxLa0.1Fe1·9O4 (x = 0.09, 0.18, 0.27, and 0.36) nanoferrites were indigenously prepared by the sonochemical approach and examined using X-ray diffraction (XRD) and electrochemical impedance spectroscopy methods, and a Foner magnetometer. The XRD studies confirmed the cubic-spinel arrangement in the prepared Zn1−xCuxLa0.1Fe1·9O4 samples with a median crystallite size of 55, 48, 41, and 34 nm for x = 0.09, 0.18, 0.27, and 0.36, respectively, using the Scherrer's equation. The Nyquist impedance plots showed that the nanoferrite samples had resistive and pseudocapacitive behavior. In the vibrating-sample magnetometry studies, elevation in saturation magnetization and depreciation in coercivity was conducted while increasing the Cu2+ content, which highlighted the ferromagnetic behavior of the nanoferrites. Further, addition of copper in Zn1−xCuxLa0.1Fe1·9O4 nanoferrites enhanced the magnetic and electrical characteristics, which are discussed briefly.
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