Abstract
Li0.35+0.5xZn0.3TixFe2..35–1.5xO4 (x = 0–0.4) ferrites waere prepared via a solid-state method. XRD refinement results show that diamagnetic Ti4+ ions enter octahedral lattice and replace Fe3+ at B site, resulting in the redistribution of B sublattice magnetic moment and ultimately reducing saturation magnetization. This mechanism is analyzed from the perspective of ion occupying distribution and substitution law. Globus relation is used to qualitatively analyze the law of initial permeability change with temperature and titanium content, and the main influencing factors are revealed. The variation of initial permeability and permeability loss with frequency and its causes have been explored, which are attributed to domain wall displacement, domain rotation and various resonance effects, especially domain wall resonance. The dominant characteristics and main influencing parameters of the three types of power losses in different frequency bands were studied quantitatively, and the transition law of the main mechanism of power losses with the change of frequency was explored. The variation of dielectric properties with frequency, titanium content and temperature was studied and analyzed utilizing polarization mechanism and Koops model.
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This study was supported by the National Key Research and Development Program of China (grant number: No.2018YFF01010701) and the Fundamental Research Funds for the Central Universities of China.
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Guo, Y., Zhu, J. & Li, H. Structure, electromagnetic and dielectric properties of Ti-substituted lithium--zinc ferrite. J Mater Sci: Mater Electron 32, 8354–8365 (2021). https://doi.org/10.1007/s10854-021-05419-2
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DOI: https://doi.org/10.1007/s10854-021-05419-2