Patent ID: 6913704

Claim:
A method for fabricating a magnetic head, comprising: fabricating a first magnetic pole; fabricating a first induction coil structure above said first magnetic pole; fabricating a second induction coil structure upon said first induction coil structure; said second induction coil structure including an etchable insulation material layer, and a plurality of second induction coil traces being fabricated therein utilizing an aspect ratio dependent etching process; wherein said aspect ratio dependent etching process includes the formation of an etching mask upon said etchable insulation material layer, wherein relatively narrow induction coil openings are fabricated in said etching mask and relatively wide electrical interconnect openings are fabricated said etching mask, and wherein a single etching process is conducted to produce induction coil trenches that project into but not through said etchable insulation material layer, and electrical interconnect trenches that project through said etchable insulation material layer; fabricating an insulative layer above said second induction coil structure; and fabricating a second magnetic pole above said insulative layer.