Perpendicular magnetic recording head and perpendicular magnetic recording apparatus

A perpendicular magnetic recording apparatus comprising:

• a magnetic disk comprising a perpendicular double-layer film of a soft magnetic backing layer and a perpendicular magnetic recording layer;
• and
• a perpendicular magnetic recording head comprising a leading pole positioned forward along a head traveling direction, a trailing pole positioned backward along the head traveling direction at a gap length g1 from the leading pole, the trailing pole having a length p along the head traveling direction and a length T in a track width direction, and the trailing pole comprising, in an air-bearing surface, a forward pole having a length p2 along the head traveling direction and a rearward pole having a length p1 along the head traveling direction of which saturation magnetic flux density is higher than that of the forward pole, and an exciting coil,
• wherein the length p of the trailing pole along the head traveling direction is longer than the length T of the trailing pole in the track width direction, the length p is longer than the gap length g1 between the leading pole and the trailing pole, and the length p1 of the rearward pole along the head traveling direction is shorter than the length p2 of the forward pole along the head traveling direction.