Patent ID: 7551397

Claim:
A magnetic write head comprising for use in magnetic data recording, the write head comprising: a first magnetic pole structure (P1); a second magnetic pole structure (P2) having first and second sides that define a track width; and a non-magnetic write gap material sandwiched between P1 and P2; and wherein P1 is configured with a first notched portion, a second notched portion and first and second steps at junction between the first and second notched portions, the first notched portion having a width defined by third and fourth sides that are aligned with the first and second sides of the P2, the second notched portion having a width that is defined by fifth and sixth sides, the width of the second notched portion being larger than the first notched portion; wherein P1 and P2 are separate by a distance that defines a gap (G) and wherein the step has a lateral width equal to 0.1-0.03 times G.