Overwrite in thin film disk recording systems
Overwrite in thin film rigid disk recording has been studied experimentally using disks with a wide range of magnetic moment and coercivity. Standard f2/f1 overwrite was investigated in detail at various recording currents and different flying heights. A theoretical model was developed using simple...
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| Main Authors: | , , |
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| 格式: | Article |
| 語言: | English |
| 出版: |
2011
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/91938 http://hdl.handle.net/10220/6726 |
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| 總結: | Overwrite in thin film rigid disk recording has been studied experimentally using disks with a wide range of magnetic moment and coercivity. Standard f2/f1 overwrite was investigated in detail at various recording currents and different flying heights. A theoretical model was developed using simple analytical approximations that relate demagnetization-field-induced position shift (hard transition shift) to the measured overwrite. The demagnetization fields due to the leading edge transitions were calculated analytically including a good approximation to the gapped head image. The results compare well with experimental measurements. A new overwrite measurement technique using the second harmonic component of a 0.5f1 signal is also described in this work. |
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