4.6 Article

Crystal structure and peculiarities of microwave parameters of Co1-xNixFe2O4 nano spinel ferrites

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RSC ADVANCES
卷 13, 期 38, 页码 26879-26891

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d3ra04557a

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Nanosized spinel ferrites Co1-xNixFe2O4 (where x = 0.0-1.0), or CNFO, were produced via a chemical method. X-ray diffraction (XRD) was used to determine the crystal structure's characteristics. It was found that all samples had a single phase with cubic syngony (space group Fd3m). The lattice parameter and unit cell volume were found to correlate with the ionic radii and coordination numbers of Co2+ and Ni2+ ions, with an increase in Ni2+ content leading to a decrease in lattice parameter and unit cell volume.
Nanosized spinel ferrites Co1-xNixFe2O4 (where x = 0.0-1.0) or CNFO have been produced using a chemical method. The crystal structure's characteristics have been determined through the utilization of X-ray diffraction (XRD). It has been demonstrated that all samples have a single phase with cubic syngony (space group Fd3m). The lattice parameter and unit cell volume behavior correlate well with the average ionic radii of Co2+ and Ni2+ ions and their coordination numbers. Thus, an increase in the Ni2+ content from x = 0.0 to x = 1.0 leads to a decrease in the lattice parameter (from 8.3805 to 8.3316 & Aring;) and unit cell volume (from 58.86 to 57.83 & Aring;(3)). Elastic properties have been investigated using Fourier transform infrared (FTIR) analysis. The peculiarities of the microwave properties have been analyzed by the measured S-parameters in the range of 8-18 GHz. It was assumed that the energy losses due to reflection are a combination of electrical and magnetic losses due to polarization processes (dipole polarization) and magnetization reversal processes in the region of inter-resonant processes. A significant attenuation of the reflected wave energy (-10 . -21.8 dB) opens broad prospects for practical applications.

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