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首页> 外文期刊>Materials Letters >Structures and magnetic properties of bulk FePt nanocomposite magnets prepared by spark plasma sintering
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Structures and magnetic properties of bulk FePt nanocomposite magnets prepared by spark plasma sintering

机译：火花等离子体烧结法制备块状FePt纳米复合磁体的结构和磁性能

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This report describes the structures and magnetic properties of bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering (SPS) processing of FePt/Fe3Pt nanocomposites created from a block copolymer template. The density of a sintered sample at 590 degrees C was 14.9 g/cm(3), which is almost the same as the theoretical density of FePt, suggesting that the sample was completely sintered. X-ray diffraction results suggest that SPS processing yielded highly ordered FePt without substantial grain growth. The magnetic energy product, (BH)(max), increased from 9.5 to 11.8 MGOe after SPS processing. The shape of the magnetization curve for the sample sintered at 590 degrees C exhibits a high squareness ratio, suggesting the presence of highly ordered L1(0) FePt, in agreement with the XRD results. (C) 2015 Elsevier B.V. All rights reserved.
机译：该报告描述了通过嵌段共聚物模板制备的FePt / Fe3Pt纳米复合材料的火花等离子体烧结（SPS）工艺制备的块状FePt / Fe3Pt纳米复合磁体的结构和磁性能。烧结样品在590摄氏度下的密度为14.9 g / cm（3），几乎与FePt的理论密度相同，表明样品已完全烧结。 X射线衍射结果表明，SPS加工产生了高度有序的FePt，而没有明显的晶粒生长。 SPS处理后，磁能积（BH）（max）从9.5 MGOe增加到11.8 MGOe。在590摄氏度下烧结的样品的磁化曲线形状显示出较高的矩形比，这表明存在与XRD结果一致的高度有序的L1（0）FePt。 （C）2015 Elsevier B.V.保留所有权利。

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