Method for manufacturing P3 layer of a perpendicular magnetic write head

A method for manufacturing P3 layer of a perpendicular magnetic write head comprising:

• forming a laminated layer;
• forming an alumina layer on top of the laminated layer;
• depositing a conductive layer onto the laminated layer;
• forming a plating frame made of two plating frame layers formed on top of the conductive layer, said plating frame layers being separated from each other by a trench defined by an initial track width;
• shrinking the trench;
• plating a platable material into a portion of the trench;
• stripping the plating frame layers leaving the plated material;
• removing the conductive layer except the conductive layer formed below the plated material defined by a first layer (622);
• removing the alumina layer except the alumina layer formed below the first layer defined by a second layer (624);
• while removing the alumina layer, removing the laminated layer except the laminated layer formed below the second layer;
• and
• patterning the laminated layer formed below the plated trench further patterning the removed laminated layer formed below the second layer.