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US 8,947,820 B1Granted
Write pulse with adjustable slew rate
AssigneeSeagate Technology LLC
InventorsKirill Rivkin, Yanzhang Liu, Mourad Benakli, Huaqing Yin
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Abstract
The implementations disclosed herein provide for a storage device including a preamplifier that generates a write current pulse having a region of reduced slew rate that temporally correlates with a time when a magnetization of a write pole tip switches polarity.
Claims20
A method comprising:
- generating a write current pulse in a magnetic recording device, the write current pulse having a predetermined region of reduced slew rate as compared to another region of the write current pulse, the reduced slew rate region occurring prior to an absolute maximum of the write current pulse and temporally coinciding with a time when a magnetization of a write pole tip switches polarity.
An apparatus comprising:
- a magnetic recording device configured to generate a write current pulse having a predetermined region of reduced slew rate as compared to another region of the write current pulse, the region of reduced slew occurring prior to an absolute maximum of the write current pulse and rate temporally coinciding with a time when a magnetization of a write pole tip switches polarity.
A method comprising:
- generating a write current pulse in a magnetic recording device, the write current pulse having a slew rate equals zero at a predetermined time when a magnetization of a write pole tip transitions between a zero and a non-zero value.
Dependencies are inferred from the claim text.