Thin film magnetic head, head gimbal assembly, and magnetic recording device

摘要

A thin film magnetic head has a main magnetic pole layer; a first trailing shield that is positioned at the trailing side of the main magnetic pole layer, and that is close to the main magnetic pole layer; and a second trailing shield that is positioned at the trailing side of the first trailing shield, and that continues to the first trailing shield. An end surface of the second trailing shield positioned at the back side in the height direction has a first end side positioned at a medium opposing surface side, and a second end side positioned at the further back side in the height direction than the first end side, and at the trailing side closer than the first end side. An angle formed by a plane including the first end side and the second end side and a plane parallel to both the height direction and the track width direction is 30 degrees to 60 degrees.

主权项

1. A thin film magnetic head, comprising:
a main magnetic pole layer, and a trailing shield positioned closer to a trailing side than the main magnetic pole layer, wherein the trailing shield comprises a first trailing shield that is close to the main magnetic pole layer, and a second trailing shield that is positioned to be closer to the trailing side than the first trailing shield and that continues to the first trailing shield; the second trailing shield comprises a first end surface that is connected to a trailing-side end surface of the first trailing shield, and a second end surface that continues to an end side positioned at a back side in a height direction out of the end sides configuring the first end surface; the second end surface comprises a first end side positioned closest to a medium opposing surface, and a second end side positioned at the farthest back side in the height direction, and closer to the trailing side than the first end side; an angle formed by a virtual plane including the first end side and the second end side relative to a plane parallel to both the height direction and the track width direction is 30 degrees to 60 degrees, and the first trailing shield comprises a first end surface forming a portion of the medium opposing surface, and a second end surface that is parallel to the first end surface, and that is positioned at the back side in the height direction.