Process for making PMR writer with constant side wall angle
A process for manufacturing a writer main pole for a perpendicular magnetic recording system is provided. The writer pole may have a constant sidewall angle from the ABS to yoke and may be formed out of an insulating material and a magnetic material. The sidewall angle of the yoke region may be adjusted during manufacture. The ABS region may correspond to the magnetic material and the yoke region may correspond to the insulating material. The insulating material may comprise Alumina. The magnetic material may comprise a NiFe alloy.
Western Digital (Fremont), LLC
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Feng Hongmei Zeyu Xiaotian Jinqiu Ming
Liu Han Ma Zhou Zhang Jiang