Magnetic write head having a stair notched, steep shouldered pole and a write gap bump

A method for manufacturing a magnetic write head for magnetic data recording, comprising:

• providing a substrate;
• forming a magnetic pole over the substrate, the magnetic pole having a raised portion with a first width;
• depositing a non-magnetic write gap material over the magnetic write pole;
• forming a magnetic pedestal over the magnetic pole, the pedestal having a second width that is less than the first width;
• performing a first ion mill to remove a portion of the magnetic pole using the pedestal as a mask;
• after performing the first ion mill, depositing a layer of non-magnetic material;
• after depositing the non-magnetic material, performing a second ion mill sufficiently to remove horizontally disposed portions of the non-magnetic material, leaving non-magnetic side walls, and resulting in the magnetic pole having a pole tip with a stair notch and steep shoulder.

A method for manufacturing a magnetic write head for magnetic data recording, comprising:

• providing a substrate;
• forming a magnetic pole over the substrate, the write pole having a raised portion with a first width;
• forming an alumina bump over the magnetic pole, the alumina bump having a front edge that is recessed a distance R from an intended air bearing surface location (ABS location);
• depositing a non-magnetic write gap material over the magnetic write pole;
• forming a magnetic pedestal over the magnetic pole, the pedestal having a second width that is less than the first width;
• performing a first ion mill to remove a portion of the magnetic pole using the pedestal as a mask, the ion milling forming the magnetic pole with a steep shoulder;
• after performing the first ion mill, depositing a layer of non-magnetic material;
• after depositing the non-magnetic material, performing a second ion mill sufficiently to remove horizontally disposed portions of the non-magnetic material, leaving non-magnetic side walls.