Patent ID: 9741368
Date: 2017-08-22
CPC Classifications: C23C,G11B

Claim:
1. A method of forming a PMR writer for shingle writing, comprising: (a) providing a substrate having a top surface formed thereon; (b) forming a write pole having a top surface that is a trailing edge, a bottom surface that is a leading edge, and two sides connecting the trailing and leading edges within a first dielectric layer on said substrate, said top surface is formed coplanar with a top surface of said first dielectric layer; (c) depositing a second dielectric layer on the trailing edge and on the first dielectric layer and forming a planar top surface on the second dielectric layer; (d) selectively depositing a third dielectric layer that contacts a top surface of the second dielectric layer above the trailing edge, said second and third dielectric layers form a non-uniform write gap layer wherein a top surface of the third dielectric layer is formed a greater distance from the trailing edge than a top surface of said second dielectric layer; e) forming a side gap adjoining each side of the write pole by etching portions of the first and second dielectric layers wherein each side gap has a side that is substantially parallel to the nearest write pole side, said etching forms a top surface of the write gap layer comprising two end sections that are parallel to the substrate and a center section with a single arc shape which includes the top surface of the third dielectric layer; and (f) depositing a magnetic layer on the write gap and adjacent to each side gap to form two side shields that are connected by a trailing shield.