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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Magnetic performance of SrFe12O19-Zn0.2Fe2.8O4 hybrid magnets prepared by spark plasma sintering
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Magnetic performance of SrFe12O19-Zn0.2Fe2.8O4 hybrid magnets prepared by spark plasma sintering

机译：SRFE12O19-ZN0.2FE2.8O4通过火花等离子体烧结制备的混合磁体的磁性性能

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摘要

In the last few years, significant effort has again been devoted to ferrite-based permanent magnet research due to the so-called rare-earth crisis. In particular, a quest to enhance ferrites maximum energy product, BHmax, is underway. Here, the influence of composition and sintering conditions on the microstructure and consequently magnetic properties of strontium ferrite-based hybrid composites was investigated. The powder mixtures consisted of hydrothermally synthesised Sr-ferrite with hexagonally shaped platelets with a diameter of 1 mu m and thickness up to 90 nm, and a soft magnetic phase in various ratios. Powders were sintered using a spark plasma sintering furnace. The crystal structure, composition and microstructure of the starting powders and hybrid magnets were examined. Their magnetic properties were evaluated by vibrating sample magnetometer, permeameter and by single-point-detection measurements.
机译：在过去几年中，由于所谓的稀土危机，铁氧体基永磁体的研究再次投入了大量精力。特别是，提高铁氧体最大能量产品BHmax的探索正在进行中。本文研究了成分和烧结条件对锶铁氧体基混杂复合材料微观结构和磁性能的影响。粉末混合物由水热合成的锶铁氧体和直径为1μm、厚度高达90 nm的六边形薄片以及不同比例的软磁相组成。粉末采用火花等离子烧结炉进行烧结。研究了起始粉末和混合磁体的晶体结构、成分和微观结构。通过振动样品磁强计、磁导仪和单点检测测量评估了它们的磁性。

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