Area density capacity improvement with negative anisotropic magnetic material trailing shield notch

A magnetic recording device, comprising:

• a magnetic recording head, comprising:
• a main pole disposed at a media facing surface;
• a trailing gap disposed adjacent to and in contact with a first surface of the main pole;
• a notch disposed adjacent to and in contact with the trailing gap at the media facing surface, the notch comprising a negative anisotropic magnetic (−Ku) material, wherein the notch is substantially aligned with the first surface of the main pole at the media facing surface;
• and
• a trailing shield coupled to the notch.

A magnetic recording head, comprising:

• a trailing shield disposed at a media facing surface, the trailing shield comprising a hot seed layer;
• a notch coupled to the hot seed layer at the media facing surface, the notch comprising a negative anisotropic magnetic (−Ku) material having a saturation magnetization between about 2.0 T to about 2.5 T, and a uniaxial anisotropy between about −0.5 T to about −1.5 T;
• a trailing gap disposed adjacent to the notch, the trailing gap surround a first surface, a second surface, and a third surface of the notch;
• and
• a main pole disposed adjacent to the trailing gap.

A magnetic recording device, comprising:

• a magnetic recording head, comprising:
• a trailing shield disposed at a media facing surface, the trailing shield comprising a hot seed layer;
• a notch coupled to the hot seed layer at the media facing surface, the notch comprising a negative anisotropic magnetic (−Ku) material having a saturation magnetization between about 2.0 T to about 2.5 T, and a uniaxial anisotropy between about −0.5 T to about −1.5 T;
• a trailing gap disposed adjacent to the notch, the trailing gap surround a first surface, a second surface, and a third surface of the notch;
• and
• a main pole disposed adjacent to the trailing gap.

A magnetic recording head, comprising:

• a leading shield;
• a main pole having a first surface disposed at a media facing surface, the main pole comprising a leading side taper recessed a first distance from the media facing surface and a trailing side taper recessed a second distance from the media facing surface;
• a trailing gap disposed adjacent to the main pole and the trailing side taper;
• a notch disposed adjacent to the trailing gap, the notch comprising a negative anisotropic magnetic (−Ku) material, wherein the notch has a first surface disposed at the media facing surface;
• and
• a trailing shield comprising a hot seed layer, the hot seed layer being coupled to the notch.

A magnetic recording device, comprising:

• a magnetic recording head, comprising:
• a leading shield;
• a main pole having a first surface disposed at a media facing surface, the main pole comprising a leading side taper recessed a first distance from the media facing surface and a trailing side taper recessed a second distance from the media facing surface;
• a trailing gap disposed adjacent to the main pole and the trailing side taper;
• a notch disposed adjacent to the trailing gap, the notch comprising a negative anisotropic magnetic (−Ku) material, wherein the notch has a first surface disposed at the media facing surface;
• and
• a trailing shield comprising a hot seed layer, the hot seed layer being coupled to the notch.