TECHNOLOGY OF OBTAINING Ni-Zn-Co FERRITES WITH A SPINEL STRUCTURE
DOI:
https://doi.org/10.14529/10.14529/met210104Keywords:
nickel-zinc-cobalt ferrite, Ni-Zn-Co ferrite, oxide materials, SEM, XRD, densityAbstract
The creation of new functional oxide materials is currently an urgent task of modern science. Analysis of scientific literature has shown that an interesting functional oxide material for use in electronics is a class of ferrites with a spinel structure A(1–x–y)BxCyFe2O4, where elements such as Ni, Zn, Co, Cu can act as components A, B and C, Fe, Mg, Mn, Al, Nd, etc. Variations in the concentration of each of the elements A, B and C of such a system will lead to a change in its physical and chemical properties. Thus, we can get a material consisting of the same elements of various concentrations, the properties of which can be smoothly controlled over a wide range of values.
The aim of this work is to determine the complex of physicochemical parameters for the synthesis of ferrites with the general formula Co0.3Ni0.7–xZnxFe2O4, where x takes values from 0 to 0.7 with a step of 0.1, as well as to characterize their properties.
As a method for synthesizing Ni-Zn-Co ferrite, a solid-phase reaction method was chosen. The samples were sintered at a temperature of 1150 °C for 5 hours.
X-ray phase analysis showed that all the samples obtained are monophasic and have a spinel structure. X-ray structural analysis revealed that the substitution of nickel atoms for zinc atoms leadsto a monotonic increase in the parameters (a and V) of the unit crystal lattice. The elemental composition of the synthesized samples was monitored using an energy dispersive analyzer installed on a Jeol JSM 7001F scanning electron microscope.
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