Patterned magnetic recording head with termination pattern

Abstract

A thin-film magnetic recording head utilizing a timing based servo pattern is fabricated by sputtering a magnetically permeable thin film onto a substrate. A gap pattern, preferably a timing based pattern, is defined by the thin film. The gap pattern includes termination patterns or endpoints that are elliptical or diamond-shaped.

1 - 19 . (canceled) 
     
     
         20 . A method of making a magnetic media, the method comprising writing a servo pattern on the magnetic media using a magnetic recording head comprising:
 a magnetically permeable thin film surface layer; and   a gap defined in the thin film surface layer, the gap having a termination pattern.   
     
     
         21 . The method of  claim 20 , wherein the gap comprises two substantially parallel edges, wherein the edges are not connected directly by a single straight edge. 
     
     
         22 . The method of  claim 20 , wherein the gap comprises two substantially parallel edges, wherein the edges are connected by something other than a straight edge. 
     
     
         23 . The method of  claim 20 , wherein the termination pattern comprises at least one curved portion. 
     
     
         24 . The method of  claim 20 , wherein a width of the termination pattern is greater than a width of the gap. 
     
     
         25 . The method of  claim 20 , wherein the gap is formed by removing a portion of the thin film using a focused ion beam oriented in a plane perpendicular to the plane of the thin film. 
     
     
         26 . The method of  claim 20 , wherein the gap is a timing-based servo pattern gap. 
     
     
         27 . The method of  claim 20 , wherein the gap is an amplitude-based servo pattern gap. 
     
     
         28 . Magnetic media made by a method comprising:
 writing a servo pattern on the magnetic media using a magnetic recording head comprising a magnetically permeable thin film surface layer and a gap defined in the thin film surface layer, the gap having a termination pattern.   
     
     
         29 . The magnetic media of  claim 28 , wherein the gap comprises two substantially parallel edges, wherein the edges are not connected directly by a single straight edge. 
     
     
         30 . The device of  claim 28 , wherein the gap comprises two substantially parallel edges, wherein the edges are connected by something other than a straight edge. 
     
     
         31 . The magnetic media of  claim 28 , wherein the gap is a timing-based servo pattern gap. 
     
     
         32 . The magnetic media of  claim 28 , wherein the gap is an amplitude-based servo pattern gap. 
     
     
         33 . The magnetic media of  claim 28 , wherein the gap pattern is any polygon oriented at an angle such that the features of the polygon do not produce a magnetic field high enough to record transitions. 
     
     
         34 . The magnetic media of  claim 33 , wherein the edges of the polygon are rounded.