低透磁率材を用いたフロッピーディスクヘッドの波形対称性
書誌事項
- タイトル別名
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- Asymmetry of the Reproduced Waveform in 4-MB FDD Heads with Low Permeability Cores
- テイ トウジリツザイ オ モチイタ フロッピー ディスク ヘッド ノ ハケイ
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抄録
A head combined with a read/write (R/W) gap and a pre-erase gap was adopted for 4-MB flexible disk drives. The reproduced waveform asymmetry due to the permeability of the erase head was analyzed in both recording and reproduction processes. The asymmetry in the recording process is due to the leakage flux from the erase head to the R/W head, and is not increased by decreasing the permeability. The asymmetry in the reproduction process is due to the remanent magnetization in the erase head. The erase field generated by the remanent magnetization was calculated by using the finite element method. When the erase field equals the media coercivity, the reproduced asymmetry reaches a maximum. The asymmetry does not increase when the field is below 18 kA/m using an medium with 48 kA/m coercivity. Therefore, using a low-permeability and low-remanence magnetization material as an erase core is a solution to the problem of decreasing the waveform asymmetry.
収録刊行物
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- 日本応用磁気学会誌
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日本応用磁気学会誌 22 (1), 30-34, 1998
公益社団法人 日本磁気学会
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詳細情報 詳細情報について
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- CRID
- 1390001205093376128
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- NII論文ID
- 110002810068
- 130004478191
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- NII書誌ID
- AN0031390X
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- ISSN
- 18804004
- 02850192
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- NDL書誌ID
- 4365291
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可