Considerations on the Coercive Force of Thin Permanent Magnets.
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- Wakiwaka H.
- Faculty of Engineering, Shinshu Univ.
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- Kato H.
- Graduate School of Science and Technology, Shinshu Univ.
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- Ezawa M.
- Graduate School of Science and Technology, Shinshu Univ.
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- Ito H.
- Teikoku Tsushin Kogyo Co., Ltd.
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- Fukuda N.
- Teikoku Tsushin Kogyo Co., Ltd.
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- Matsuhiro K.
- Teikoku Tsushin Kogyo Co., Ltd.
Bibliographic Information
- Other Title
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- 薄形永久磁石の保磁力の検討
- ウスガタ エイキュウ ジシャク ノ ホジリョク ノ ケントウ
Search this article
Abstract
Recently, thin-type permanent magnet have been increasingly used to reduce the size of motors and actuators. However, the characteristics of a permanent magnet defetiorate when it is thinned. The demagnetization of a magnet leads to a design that miniaturized the motor and actuator. We developed a low power, thin linear oscillatory actuator (LOA) for cellular phones. A thin-type permanent magnet is used for the LOA. The characteristics of the LOA might be adversely affected by demagnetization of a thin-type permanent magnet. This paper describes (1) the structure and operating principle of the LOA for cellular phones, (2) considerations on the coercive force based on the thrust characteristics of the LOA, and (3) considerations of coercive force based on measurement of the magnetic flux density.
Journal
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- Journal of the Magnetics Society of Japan
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Journal of the Magnetics Society of Japan 25 (4-2), 1199-1202, 2001
The Magnetics Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680068199936
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- NII Article ID
- 110002811168
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- NII Book ID
- AN0031390X
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- ISSN
- 18804004
- 02850192
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- NDL BIB ID
- 5759595
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed