Method of forming a write head with a write pole shield having a low saturation magnetization layer
AssigneeSeagate Technology LLC
InventorsSwaraj Basu, Prim Gangmei, Angela Moore, Mark Anthony Gubbins, Beverley R. McConnell
Life of this patent
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Abstract
A recording head that includes a bearing surface and a write pole having a front surface that forms a portion of the bearing surface. The recording head also includes a side shield for the write pole. The side shield includes a low saturation magnetization cap layer having a front surface that forms a portion of the bearing surface. The side shield also includes a main side shield layer having a saturation magnetization that is higher than a saturation magnetization value of the low saturation magnetization cap layer.
Claims12
A method of forming a write head comprising:
- forming a write pole having a front surface that forms a portion of a bearing surface of the write head;
- forming a trailing edge shield above the write pole;
- forming a trailing edge shield gap layer between the trailing edge shield and the write pole;
- forming a bi-layered side shield for the write pole, the bi-layered side shield is positioned below the trailing edge shield and comprises a main side shield layer having a trailing surface bevel and a low saturation magnetization cap layer on the trailing surface bevel, the low saturation magnetization layer having a front surface that forms a portion of the bearing surface, the low saturation magnetization cap layer comprises a substantially horizontal portion at the bearing surface that is positioned below the trailing edge shield gap layer and is in contact with the trailing edge shield gap layer.
A method of forming a write head comprising:
- forming a write pole having a front surface that forms a portion of a bearing surface of the write head;
- and
- forming a side shield for the write pole by:
- forming a low saturation magnetization cap layer having a front surface that forms a portion of the bearing surface;
- and
- forming a main side shield layer having a back step feature recessed behind the bearing surface and a trailing surface bevel on which the low saturation magnetization cap layer is disposed, the main side shield layer having a saturation magnetization that is higher than a saturation magnetization value of the low saturation magnetization cap layer, and a width of the back step feature is substantially equal to a width of the low saturation magnetization cap layer.
A method of forming a write head comprising:
- forming a write pole having a front surface that forms a portion of a bearing surface of the write head;
- forming a trailing edge shield above the write pole;
- forming a trailing edge shield gap layer between the trailing edge shield and the write pole;
- and
- forming a bi-layered side shield for the write pole, the bi-layered side shield is positioned below the trailing edge shield and comprises a cap layer and a main side shield layer, below the cap layer, having a back step feature in an upper portion of the main side shield layer, with a lower portion of the main side shield layer having an upper surface that comprises a bottom surface of the back step feature, the back step feature being recessed behind the bearing surface and having a width that is substantially equal to a width of the cap layer.
Dependencies are inferred from the claim text.