Patent ID: 7535675

Claim:
A magnetic recording head including: a substrate; a main pole provided on said substrate; and a return pole provided on said substrate and connected to said main pole electrically; wherein said main pole includes a pillar-like track restriction part extended approximately perpendicularly from an air bearing surface; and a magnetic flux introduction part connected to said track restriction part and having a cross sectional area at a connection portion with said track restriction part that is parallel to said air bearing surface and increases as said introduction part goes further away from said air bearing surface; wherein said main pole is shaped on said air bearing surface to have a lower side closer to said substrate which is shorter than an upper side away from said substrate; wherein an inner angle generated between said upper side and an adjacent side of said track restriction part on said air bearing surface is defined as α and an inner angle generated between said upper side and an adjacent side thereof at a cross section of said magnetic flux introduction part that is parallel to said air bearing surface at a position closer to a part connected to said track restriction part is defined as γ, a relationship between α and γ becomes γ>α, and wherein a length of the track restriction part from an edge of the leading side perpendicular to the air bearing surface to the cross sectional area, is shorter than a length of the track restriction part from an edge of the trailing side perpendicular to the air bearing surface to the cross sectional area.