Abstract
Polycrystalline Ni1−x Zn x FeGaO4 samples containing different amounts of zinc (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5) were synthesized by solid-state reaction. Study of the crystal structure by x-ray diffraction (XRD) revealed peaks typical of a single-phase polycrystalline face-centered cubic structure (FCC). Elemental composition was determined by x-ray fluorescence (XRF) analysis. Fourier-transform infrared (FTIR) spectra contained two absorption bands related to the tetrahedral A and octahedral B sites of the spinel ferrite. Magnetization loops obtained by vibrating sample magnetometry (VSM) indicated that the saturation magnetization, M s, decreased gradually with increasing in Zn content (x), and that coercivity H c was related to the microstructure of the Zn-doped samples. Mössbauer effect (ME) spectra of the samples were broad and magnetically split for x = 0.0 and 0.1 and quadruple doublets for the other Zn2+ concentrations. The dielectric constant (ε′) and dielectric loss tangent (tan δ) were also measured over wide ranges of frequency and temperature by use of the two probe method. The results were explained on the basis of cation–anion–cation and cation–cation interactions through the metal sites in the Ni–Zn–Ga ferrites.
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Hashhash, A., Imam, N.G., Ismail, S.M. et al. Preparation and Characterization of Zinc-Containing Nickel Gallate Ferrite. J. Electron. Mater. 44, 3833–3842 (2015). https://doi.org/10.1007/s11664-015-3902-6
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DOI: https://doi.org/10.1007/s11664-015-3902-6