Patent ID: 9082444
Filing Date: 2015-07-14
Classification: B82Y,G11B

Abstract:
1. A magnetic recording medium comprising a substrate and a magnetic recording layer formed on the substrate, wherein: the magnetic recording layer, comprising a primary recording layer for recording magnetic signals and an auxiliary recording layer magnetically coupled with the primary recording layer, having a different composition from the primary recording layer and having a smaller thickness or coercive force than the primary recording layer, has a plurality of tracks which define recording regions extending in a scanning direction of a magnetic head and which are arranged in parallel in a direction intersecting with the scanning direction; the magnetic recording layer being provided with a groove portion which is formed at least in the auxiliary recording layer but not extending through the primary recording layer in a region between the tracks on the surface of the magnetic recording layer and which extends along the tracks; and the groove portion being formed so that, in a cross-section of the magnetic recording layer taken along a plane perpendicular to the scanning direction: