Transmission Electron Microscopy Study on the Grain Boundaries and Magnetic Domains in Nd–Fe–B Based Magnets
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- Sato Kohei
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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- Murakami Yasukazu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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- Shindo Daisuke
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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- Hirosawa Satoshi
- Hitachi Metals Ltd
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- Yasuhara Akira
- JEOL Ltd.
Bibliographic Information
- Other Title
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- Transmission electron microscopy study on the grain boundaries and nagnetic domains in Nd-Fe-B based magnets
- Transmission Electron Microscopy Study on the Grain Boundaries and Magnetic Domains in Nd–Fe–B Based Magnets
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Abstract
The effect of post-sintering heat treatment on the coercivity of Nd–Fe–B based permanent magnets was studied by observing their crystallographic and magnetic microstructures. High-resolution transmission electron microscopy revealed meandering grain boundaries in the as-sintered state, and the smoothness of the boundaries was improved by the post-sintering heat treatment. Electron holography demonstrated that magnetization reversal occurred in a stepwise manner in individual grains in the specimen subjected to the post-sintering heat treatment, whereas reversal was occurred simultaneously in different grains in the as-sintered specimen.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 51 (2), 333-340, 2010
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390282679227989632
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- NII Article ID
- 10026265548
- 130004454395
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- NII Book ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 10533330
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed