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首页> 外文期刊>Materials Science and Engineering >Relationship between Nd content and magnetic properties of Nd_2Fe_(14)B/Nd nanocomposites chemically synthesized using self-assembled block copolymer templates
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Relationship between Nd content and magnetic properties of Nd_2Fe_(14)B/Nd nanocomposites chemically synthesized using self-assembled block copolymer templates

机译：自组装嵌段共聚物模板化学合成Nd_2Fe_（14）B / Nd纳米复合材料的Nd含量与磁性能的关系

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摘要

To synthesize nanocomposite magnets with controlled high magnetic performance, Nd2Fe14B/Nd nanocomposites were chemically synthesized using self-assembled block copolymer templates. The Nd, Fe, and B ratios in the raw materials used to synthesize the nanocomposites were adjusted to control the nanocomposites' magnetic properties. Nd2Fe14B/Nd nanocomposites with large coercivity were obtained from a Nd-rich mixture of raw materials. In the nanocomposites, Nd2Fe14B was surrounded by a nonmagnetic Nd phase that weakened the magnetic coupling of Nd2Fe14B grains and prevented magnetic field inversion. With increasing Nd content, the coercivity increased and the magnetization decreased. The simple process described herein, which involved chemical synthesis using self-assembled block copolymer templates, enabled the synthesis of nanocomposite magnets with controlled high magnetic performance through adjustment of the ratios of the raw materials.
机译：为了合成具有受控高磁性能的纳米复合磁体，使用自组装嵌段共聚物模板化学合成了Nd2Fe14B / Nd纳米复合材料。调节用于合成纳米复合材料的原材料中Nd，Fe和B的比例，以控制纳米复合材料的磁性能。从富含Nd的原料混合物中获得具有高矫顽力的Nd2Fe14B / Nd纳米复合材料。在纳米复合材料中，Nd2Fe14B被非磁性Nd相包围，这削弱了Nd2Fe14B晶粒的磁耦合并阻止了磁场反转。随着Nd含量的增加，矫顽力增加，磁化强度降低。本文所述的简单方法涉及使用自组装嵌段共聚物模板进行化学合成，从而能够通过调节原料比例来合成具有受控高磁性能的纳米复合磁体。

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