Patent ID: 7249406

Claim:
A method for testing the magnetic pole structure of a perpendicular magnetic head, comprising: fabricating a magnetic head upon a wafer substrate surface, including: fabricating a first magnetic pole structure having a first magnetic pole portion and a projecting portion that extends within a kerf area of said wafer substrate surface; fabricating an induction coil structure upon said first magnetic pole; fabricating a back gap piece in magnetic connection with said first magnetic pole; fabricating a first magnetic interconnect piece in magnetic connection with said projecting portion of said first magnetic pole; fabricating a second magnetic pole structure above said induction coil; said second magnetic pole structure including a second magnetic pole portion disposed in magnetic connection with said back gap piece, and a portion disposed in said kerf area in magnetic connection with said first interconnect piece; passing an electrical current through said induction coil and measuring changes in said electrical current as an indication that the first and second magnetic poles of said magnetic head are properly fabricated.