MICHAEL ALEX

HAMR writer pole length characterization

Systems and methods for forming implanted capping layers in magnetic media for magnetic recording

Data storage device detecting media defects by writing opposite polarity test pattern

Energy assisted magnetic recording medium capable of suppressing high DC readback noise

Disk drive destabilizing magnetization of test pattern using head laser to enhance defect detection

Energy assisted magnetic recording medium capable of suppressing high DC readback noise

Disk drive calibrating a laser write power for heat assisted magnetic recording

Magnetic recording disk drive with write driver to write head transmission line having non-uniform sections for optimal write current pulse overshoot

Synchronized rewriting of data

Perpendicular magnetic recording write head with spin torque oscillator for fast switching of write pole magnetization

Perpendicular magnetic recording system with helical write coil and auxiliary coil for fast switching of write pole magnetization

Method and apparatus for controlling fly-height of a perpendicular-magnetic-recording head in a hard disk drive

Method and apparatus for quantifying stress and damage in magnetic heads

Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation

System and method for ameliorating the effects of adjacent track erasure in magnetic data storage device