Patent ID: 8790523

Claim:
A method for manufacturing a magnetic head with a main magnetic pole film for perpendicular writing, comprising: forming, on one face of a first non-magnetic film, said main magnetic pole film with a body portion of a large plane area and a write magnetic pole portion continuous with said body portion and elongated in a plane area; etching said one face of the first non-magnetic film such that an undercut is formed around the body portion and beneath said write magnetic pole portion, the undercut penetrating beneath said write magnetic pole portion in a track width direction such that said write magnetic pole portion extends from one portion of the first non-magnetic film across the undercut to another portion of the first non-magnetic film; after filling at least a part of the undercut with an organic filler, lowering a surface of the first non-magnetic film beneath the main magnetic pole film at the undercut by an etching; after removal of said organic filler, forming a second non-magnetic film to surround an entire perimeter of said write magnetic pole portion and to cover surfaces of said first non-magnetic film in the undercut; and next, forming a write shield film made of a magnetic material to surround an entire perimeter of a portion of said second non-magnetic film which surrounds said write magnetic pole portion, and to fill, below the one face of the first non-magnetic film, the undercut.