Effects of In-substitution on the microstructure and magnetic properties of Bi-CVG ferrite with low temperature sintering |
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Authors: | Qi-Ming Xu Li-Jun Hao Xiao-Gang Lu Jun-Shi Zhou |
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Affiliation: | a School of Material Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, PR Chinab Institute 206 of China Ordnance Industries Group Corporation, Xi’an 710100, PR Chinac Shaanxi Jinshan Electronic Components Co. Ltd., Xian Yang 712021, PR China |
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Abstract: | [Y1.05Bi0.75Ca1.2](Fe4.4−xInxV0.6)O12(Inx:Bi-CVG) ferrite material has been prepared successfully by a solid-state reaction method. The effects of In3+ substitution and sintering temperatures on the bulk density, microstructure and magnetic properties are performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), materials automatic test system (MATS) and microwave ferrite parameters meter. The results show that In3+ can lower the sintering temperatures and enhance the magnetic properties of Bi-CVG ferrite. Besides, all sintered specimens with different In3+ contents show a single garnet crystal structure. The specimen of [Y1.05Bi0.75Ca1.2](Fe4In0.4V0.6)O12 sintered at 1075 °C shows homogenous distribution of grain size and densified microstructures. The ferromagnetic resonance linewidth (ΔH) has an increase with In3+ contents. Additionally, the sample has the optimum magnetic properties: ρ=5.23 g/cm3, Br=31.3 mT, Hc=378.8 A/m, 4πMs=506.2×10−4 T. |
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Keywords: | Bi-CVG ferrite Low temperature sintering Magnetic property In-substitution Microstructure |
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