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• W4384008876 abstract "Abstract The sol–gel auto-combustion approach was used to create Ni 0.4 M 0.2 Zn 0.4 Fe 2 O 4 (M = Ni 2+ , Mg 2+ , and Co 2+ ) nanoparticles. X-ray diffraction (XRD), Fourier transform infrared spectroscopy, energy dispersive x-ray spectroscopy (EDS), and an inductance–capacitance–resistance (LCR) meter were used to analyse the samples’ structural, elastic, and electrical properties. In all samples, the XRD patterns obtained indicated the formation of a monophasic cubic spinel structure with no identifiable impurity phase, which was supported by EDS investigations. The introduction of substituting ions, specifically Mg 2+ and Co 2+ , into Ni–Zn ferrite nanoparticles results in an increase in the lattice parameter. The lattice parameter for Ni–Zn is 8.377 Å, while for the substituted nanoparticles it is 8.389 and 8.388 Å for Mg 2+ and Co 2+ respectively. Additionally, the crystallite size of the substituted nanoparticles increases to 46.57 nm from 40.75 nm for Ni–Zn. However, the x-ray density of the substituted nanoparticles decreases to 5.180 and 5.337 g cm −3 for Mg 2+ and Co 2+ respectively, from 5.358 g cm −3 for Ni–Zn. The elastic parameters, such as the Young’s modulus, Debye temperature, bulk modulus, and rigidity modulus, were calculated. The good elastic characteristics of Ni–Zn ferrite were confirmed and may be explained by the lower lattice parameter values and smaller crystallite sizes. Temperature and frequency effects on dielectric behaviour and AC electrical conductivity ( σ AC ) were investigated. At ambient temperature, the dielectric characteristics, specifically the dielectric constant ( ϵ ′) and loss tangent (tan δ ), were computed over a frequency range of 100–2 MHz. The compositions display normal dielectric properties, which are attributed to the interfacial polarisation following the Maxwell–Wagner model. The AC conductivity of nanoparticles was shown to decrease when Mg 2+ and Co 2+ were substituted into Ni–Zn ferrite. Furthermore, the AC conductivity diminishes with decreasing frequency, which is a sign of ionic conductivity. There was a direct relationship between the temperature and the values of ϵ ′, tan δ , and σ AC for different ions." @default.
• W4384008876 created "2023-07-13" @default.
• W4384008876 creator A5004718704 @default.
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• W4384008876 date "2023-07-21" @default.
• W4384008876 modified "2023-09-25" @default.
• W4384008876 title "Synthesis and investigation of structural, elastic, and electrical properties of cobalt and magnesium substituted Ni–Zn spinel ferrite nanoparticles" @default.
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• W4384008876 doi "https://doi.org/10.1088/1361-648x/ace6ed" @default.
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• W4384008876 hasPublicationYear "2023" @default.
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