Patent ID: 7848063
Filing Date: 2010-12-07
Classification: B82Y,G01R,G11B,H01L

Abstract:
1. A yoke-type magnetic head for reading out magnetic information from a medium in which information is magnetically recorded in a track direction, the head comprising: a main magnetic pole which is provided on a plane perpendicular to a linear recording direction and has an opposing surface facing the medium, a saturation magnetic flux density Bs a sub yoke which is formed on the plane by being connected to the main magnetic pole, and has a length SYW in a direction perpendicular to the linear recording direction longer than a length SYH in a direction perpendicular to a main surface of the medium, and a saturation magnetic flux density Bs a magnetoresistance effect film which is formed between the sub yoke and the opposing surface, and abuts the main magnetic pole.