INVERTED WRITE HEAD WITH HIGH-PRECISION TRACK WIDTH DEFINITION

摘要

A method of fabricating a thin film magnetic transducer and the resulting transducer structure is disclosed. The method starts with the formation of a bottom pole (104) having an upper portion (110) and a lower portion (126) in a zero throat region (112). The upper portion has an upper portion width (114) and the lower portion had a lower portion width (144), wherein the lower portion width is greater than the upper portion width. A gap layer (130) is then formed over the bottom pole, and the top pole (132) is formed over the gap layer. The top pole width (142) is greater than the bottom pole's lower portion width. In one embodiment, a planarization layer (128) is deposited overlaying the bottom pole prior to formation of the gap layer. Lapping is then performed to reduce the planarization layer and the bottom pole's upper portion to a flat surface suitable for receiving the gap layer deposition.