先端的透過電子顕微鏡法によるSm-Co系永久磁石の微細組織と磁区構造評価

• 梁 俊模

  東北大学素材工学研究所

• 進藤 大輔

  東北大学素材工学研究所

• 竹口 雅樹

  日本電子株式会社

• 川崎 正博

  日本電子株式会社

• 及川 哲夫

  日本電子株式会社

書誌事項

タイトル別名

• Characterization of Microstructure and Magnetic Domain Structure in Sm-Co Based Permanent Magnets by Advanced Transmission Electron Microscopy
• センタンテキ トウカ デンシ ケンビキョウホウ ニ ヨル Sm-Coケイ エイキュウ ジシャク ノ ビサイ ソシキ ト ジク コウゾウ ヒョウカ

抄録

Microstructure and magnetic domain structure of Sm(Co_0.653Fe_0.257Cu_0.066Zr_0.024)_7.3-permanent magnets were investigated by advanced transmission electron microscopy (TEM), using techniques such as high-resolution electron microscopy (HREM) and Lorentz electron microscopy with a high-voltage electron microscope, and an elemental mapping method utilizing a small electron probe with a field-emission electron gun. As a result, the crystallographic arrangement of cellular microstructures including the Z phase and the composition distribution in the cell boundary phase were accurately evaluated. Also, the magnetic domain wall width was precisely measured from the intensity distribution of Lorentz electron microscope images recorded with the imaging plate. Furthermore, the magnetic field in both the inside and the outside of this material was observed by an electron holography technique for the first time.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 63 (4), 542-548, 1999

  公益社団法人 日本金属学会

キーワード

• Sm(Co, Fe, Cu, Zr)-permanent magnet
• advanced transmission electron microscopy
• high-voltage electron microscope
• field-emission electron gun
• imaging plate
• electron holography

詳細情報

• CRID: 1390282681467462400
• NII論文ID: 10002549928
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.63.4_542
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 4705658
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4705658
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/63/4/63_4_542/_pdf
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