Structural, Magnetic Properties and Hyperthermia Efficiency of MF/CuAl2O4 Multiferroic Nanocomposite

Abstract

The multiferroic MF/CuAl2O4 (MF= CoFe2O4, NiFe2O4, MgFe2O4, and ZnFe2O4) was prepared using two stages of the sol-gel method. X-ray Diffraction (XRD), the Fourier transforms infrared absorption (FT-IR) and High-resolution Transmission Electron Microscope (HR-TEM) were used to examine the structure of all samples. From the XRD patterns, two standards of cubic spinels structure (CuAl2O4 + MF) were observed. The analysis of FTIR spectra confirmed the formation of the chemical and molecular structure changes in the MF/CuAl2O4. HR-TEM images showed a uniform particle distribution with a nanoscale of all samples. The magnetic properties were studied from the hysteresis loops using a vibrating sample magnetometer (VSM) and the magnetization M (T) by the Faraday balance method. All samples exhibited typical ferrimagnetic behavior, except for ZnF/CuAl recorded superparamagnetic. Curie temperature (TC) for all nanocomposites obtained from M(T) protocols, which is lower than the standard value of MF nanoferrites. The heating efficiency of all samples was investigated by measuring the Specific Absorption Rate (SAR) parameter. The SAR of NiF/CuAl showed a maximum value as well as saturation magnetization (Ms) and lowest coercivity (Hc) value.