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首页> 外文期刊>Journal of Applied Physics >Relation between Colloid Pattern and Permanent Magnet Precipitate during the Magnetization Reversal in Alnico V
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Relation between Colloid Pattern and Permanent Magnet Precipitate during the Magnetization Reversal in Alnico V

机译：Alnico V磁化反转过程中胶体模式与永磁体沉淀之间的关系

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摘要

Improved electron microscope observation technique has confirmed some of the basic assumptions on the structure of Alnico V and has added knowledge of details. The permanent magnet precipitate was investigated at various states of its growth starting from nucleation. Pictures with details smaller than 20 A reveal the completely developed structure of Alnico V which differs somewhat from former descriptions. It can be recognized clearly that the precipitated particles have grown together to a continuous anisotropic network subdividing the matrix. Colloid patterns on these surfaces have been observed with electron microscope. During the reversal of magnetization, an anisotropic structure in the colloid‐covered areas of the pattern can be distinguished. The colloid particles align themselves, preferring one of the two faces of the precipitated structure. This is most pronounced in the steep part of the demagnetization curve. It can be observed as soon as the colloid starts to form patterns. The necessary surveying of magnet surfaces was possible by preparing very thin oxide replicas with a simple technique that eliminated the former ``floating'' method. Replicas were stripped from the surface which preserved the orientation without destroying the surface of the magnet.
机译：改进的电子显微镜观察技术已经证实了Alnico V结构的一些基本假设，并增加了详细知识。从成核开始研究了永磁体沉淀物在各种生长状态。细节小于20 A的图片显示了Alnico V的完整开发结构，与先前的描述有所不同。可以清楚地认识到，沉淀的颗粒已经长成一个连续的各向异性网络，细分了基质。这些表面上的胶体图案已经用电子显微镜观察到。在反转磁化过程中，可以区分图案胶体覆盖区域中的各向异性结构。胶体颗粒自身排列，优选沉淀结构的两个面之一。这在退磁曲线的陡峭部分最为明显。胶体开始形成图案后就可以观察到。通过使用一种简单的技术来制备非常薄的氧化物复制品，就可以对磁体表面进行必要的测量，该技术可以消除以前的``浮动''方法。从表面剥离复制品，从而保持取向而不会破坏磁体的表面。

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  • 来源
    《Journal of Applied Physics》 |1958年第3期|共3页
  • 作者

    Kronenberg K. J.; Tenzer R. K.;

  • 作者单位

    The Indiana Steel Products Company, Valparaiso, Indiana;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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