Analytical electron microscopy and electron holography on microstructures and magnetic domain structures of Sm-Co 2:17 magnets.

Young-Gil Park; Jun-Mo Yang; Daisuke Shindo

doi:10.1093/jmicro/53.3.267

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Analytical electron microscopy and electron holography on microstructures and magnetic domain structures of Sm-Co 2:17 magnets.

Young-Gil Park·Jun-Mo Yang·Daisuke Shindo

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Abstract

Microstructures and magnetic domain structures of precipitation-hardened Sm-Co permanent magnets were systematically investigated by analytical electron microscopy and electron holography. By an elemental mapping method with energy-dispersive X-ray spectroscopy, the change in the local distribution of additive elements, i.e. Cu, Fe and Zr, in Sm-Co magnets with various heat treatments was visualized and the enrichment of Zr in the Z-phase with a width of approximately 1 nm was clarified directly. Detailed analysis with electron holography revealed that considerable fluctuation in the distribution of lines of magnetic flux in the step-aged magnet was due to the chemical partitioning of additives and resulted in magnetic hardening during the magnetization process.

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Holography Magnetics Metals Microscopy, Electron Models, Theoretical X-Ray Diffraction Journal Article Research Support, Non-U.S. Gov't

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Young-Gil Park, Jun-Mo Yang, Daisuke Shindo. 2004. Analytical electron microscopy and electron holography on microstructures and magnetic domain structures of Sm-Co 2:17 magnets.. https://doi.org/10.1093/jmicro%2F53.3.267

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