Author
Department of Science, Technical and Vocational University of Tehran, Iran
Abstract
In this article, nickel graphene spinel ferrites are made. The purpose of making these ferrites is to use and examine them as a phase shifting material in the frequency band of 2-18 GHz. First, these materials were made through co-precipitation synthesis method. Then the physical tests of these materials including X-ray diffraction (XRD), infrared spectroscopy (FT-IR), scanning electron microscope (SEM) and histogram of particle size distribution were taken. After that, VNA network tests were taken for these materials. Real and imaginary parameters of dielectric permittivity and real and imaginary parameters of magnetic permeability were obtained after coding in MATLAB software. Dielectric loss tangent and return loss were also obtained for these materials. Finally, the performance of these materials in the hysteresis loop was evaluated using the VSM test. The manufactured ferrite materials showed a good response to magnetic tests in the frequency band of 2 to 18 GHz. The results obtained for the main parameters in line with the studied parameters in radar shifters produced good results.
Keywords
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