Patent ID: 6894868

Claim:
A magnetic head comprising a sliding surface on which a magnetic recording medium is slid, a magnetic gap formed in said sliding surface for exchanging information signals with said magnetic recording medium, a track width controlling portion for prescribing a track width of said magnetic gap, said track width controlling portion being formed by abutting a pair of magnetic core halves, there being a track width controlling groove formed in each of said magnetic core halves, a metal magnetic film provided in association with said magnetic gap and said track width controlling portion, and a groove formed in at least one end of said magnetic gap for extending substantially parallel to the sliding direction of said magnetic recording medium, wherein a length L in μm between a first point of intersection between said track width controlling groove formed in one of said magnetic core halves and one lateral edge of said groove and a second point of intersection between said magnetic gap and the other lateral edge of said groove is related with an intensity of the recording current I [mA] by L ≧11.3×1 nI −21.9.