Patent ID: 6445536
Filing Date: 2002-09-03
Classification: G11B

Abstract:
A stencil-defined thin film head comprising:a dielectric layer having a top surface, said dielectric layer having an opening therethrough, said opening being defined by first, second, third and fourth sidewalls, said first and second sidewalls being substantially perpendicular to said top surface and defining a non-sloped portion of said opening, said third and fourth sidewalls extending upwardly from said first and second sidewalls to join said top surface and defining a sloped portion of said opening; a buffer layer disposed beneath said dielectric layer, said buffer layer having an opening therethrough substantially aligned with said non-sloped portion of said opening through said dielectric layer, wherein said lower core is disposed within said substantially non-sloped portion of said opening through said dielectric layer and within said opening through said buffer layer; a lower core disposed within said substantially non-sloped portion of said opening; a non-planar write gap layer disposed over said dielectric layer and said lower core; and an upper core, formed of a HBsat material, disposed over said write gap layer.