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首页> 外文期刊>Journal of Materials Research >Magnetic force microscopy of combined reaction-processed polycrystalline equiatomic bulk L1_0 FePd
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Magnetic force microscopy of combined reaction-processed polycrystalline equiatomic bulk L1_0 FePd

机译：组合反应处理的多晶等原子块体L1_0 FePd的磁力显微镜

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摘要

In this work, the correlation between magnetic-domain structure and microstructure in combined reaction-processed equiatomic L1_0 FePd has been investigated using magnetic force microscopy. The microstructure consisted of approximately equiaxed grains with an average grain size of ～1 urn and a grain size distribution ranging from below the theoretical critical domain size (Dcrit～0.2-0.3 μm) up to approximately 5 μm in diameter. The domain structure was characterized as "mixed" in nature, consisting of smaller single-domain grains, larger multidomain grains, and a larger scale interaction domain structure encompassing many grains. The domain boundaries separating interaction domains tended to lie along grain boundaries, and it is proposed that the observed interaction domains should be considered in descriptions of the magnetization and magnetization reversal behavior of this material. In particular, pinning of interaction domain walls by intragranular features of the microstructure such as grain boundaries and single-domain grains could play a role in the measured coercivities.
机译：在这项工作中，已使用磁力显微镜研究了组合反应处理的等原子L1_0 FePd中磁畴结构与微观结构之间的相关性。显微组织由平均晶粒尺寸约为〜1 um的近似等轴晶粒组成，晶粒尺寸分布范围从理论临界尺寸以下（Dcrit〜0.2-0.3μm）到直径约5μm。该畴结构在本质上被表征为“混合”，由较小的单畴晶粒，较大的多畴晶粒以及包含许多晶粒的较大尺度的相互作用畴结构组成。分隔相互作用区域的区域边界倾向于沿着晶粒边界，因此建议在描述这种材料的磁化和磁化反转行为时应考虑观察到的相互作用区域。特别是，通过微结构的晶粒内特征（例如晶界和单畴晶粒）固定相互作用畴壁可能在测量的矫顽力中起作用。

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  • 来源
    《Journal of Materials Research》 |2009年第8期|2677-2687|共11页
  • 作者

    Paul R. Ohodnicki; Anirudha Desphande; Jorg M.K. Wiezorek; Timothy J. Klemmer;

  • 作者单位

    Mechanical Engineering and Materials Science Department, University of Pittsburgh, Pittsburgh, Pennsylvania 15213;

    Mechanical Engineering and Materials Science Department, University of Pittsburgh, Pittsburgh, Pennsylvania 15213;

    Mechanical Engineering and Materials Science Department, University of Pittsburgh, Pittsburgh, Pennsylvania 15213;

    Seagate Research, Pittsburgh, Pennsylvania 15222-4215;

  • 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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