Storage Management White Papers
Anisotropic Magnetoresistive and Giant Magnetoresistive Head Technology Taking Over Hard Drives
Overview Error rate, the number of data bits correctly decoded by the recording head and fly height, the distance between the read/write elements of the head and the magnetic layer of the media are key design parameters in the quest for higher areal density. Designers strive to keep error rate and fly height as large as possible. Error rate for performance reasons and fly height for reliability. For a given head technology, however, these are mutually exclusive goals. To achieve higher areal densities with thin film inductive (TFI) heads, fly heights had to decrease in order to maintain acceptable error rates. Increasing the ability of the head to detect magnetic signals (i.e. head sensitivity) and slow the rate at which fly height decreased was possible for a time. Eventually, new technologies were needed. Hence the development and introduction of Magneto-Resistive (MR), both anisotropic and giant magnetoresistive, technology.
| Publisher | Western Digital Corporation | File Format | HTML & PDF |
|---|---|---|---|
| Date Published | March 1999 | Downloads | 35 |
| Format | White Papers | ||
| Topics | |||
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