Abstract
Objective: To prepare Cu doped Mg0:5xCuxZn0:5Fe2O4 (x = 0.0, 0.05, 0.1, 0.15,0.2 and 0.25) spinel ferrites materials and study the structure, morphology, and magnetic properties. Methods: Cu doped Mg-Zn spinel ferrites are magnetic and highly resistive materials. They were synthesized by the method of solid-state reaction and characterized by x-ray diffraction (XRD), field effect scanning electron microscopy (FESEM), Fourier transform infrared (FTIR), andvibrating sample magnetometer (VSM) for their structural, compositional,morphological, functional properties. They are with spinel structure under Fd-3m space group. Their crystallite size was 44.58 nm to 31.02 nm range after calcined at 1000 oC. Their spinel structure was confirmed with FT-IR analysis, whose absorption bands were 598.84 – 580.40 cm-1 and 405.35 - 402.15 cm-1 range for higher and lower frequency, respectively. The value of coercivity is in the range 146.33 - 9.427 Oe with the variation of content. The lower values of the coercivity indicated the soft ferrimagnetic nature of the synthesized materials. Findings/ Application: Substitution of non-magnetic Cu2+ ions strongly influenced the structural and magnetic properties of magnesium ferrites. Keywords: Cu doped MgZn ferrite; XRD; FTIR; FESEM; Coercivity
Highlights
In the spinel ferrites family, magnesium ferrite (MgFe2O4) has a spinel structure with inversion mode that depends on the synthesis method used in memory and switching circuits
The synthesized materials are in the nanoscale range, exhibiting the nanoparticle behaviors applicable in different technological outputs
The samples were of single-phase, cubic spinel structure according to x-ray diffraction (XRD)
Summary
In the spinel ferrites family, magnesium ferrite (MgFe2O4) has a spinel structure with inversion mode that depends on the synthesis method used in memory and switching circuits. Magnesium ferrite is used in heterogeneous catalysis, adsorption, sensors, and magnetic technologies [1,2,3,4]. Doping of Al [8,9], Ge [10], Cu [11], Ni [12], Cr [13], Sm-Gd [14], Ce-Gd [15] on magnesium ferrite and their effects on the electrical, dielectric and magnetic properties were studied [16,17,18]. The spinel ferrite with the generic formula Cu doped Mg0.5−xCuxZn0.5Fe2O4 (x = 0.0, 0.05, 0.1, 0.15, 0.2, and 0.25) was prepared by the standard ceramic method. The structural and magnetic properties were investigated using x-ray diffraction, field effect scanning electron microscopy, infrared spectroscopy, and vibrating sample magnetometer
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