Anti-parallel tab sensor fabrication

Abstract

A method for fabricating a sensor having anti-parallel tab regions. The method includes forming a free layer having tab areas on opposite sides of an active area, forming a first layer of a carbon composition above the active area of the free layer, the first layer of carbon being substantially absent from tab areas of the free area, forming spacer layers above the tab areas of the free layer, the spacer layers being operable to make magnetic moments of ferromagnetic layers on opposite sides thereof antiparallel, forming bias layers above the spacer layers, the bias layers being operative to substantially pin magnetic moments of the tab areas of the free layer, forming second layers of carbon composition above the tab areas of the free layer, and removing the layers of carbon composition and any portions of the layers overlying the layers of carbon composition.

1 . A magnetic storage system, comprising: 
 magnetic media;    at least one head for reading from and writing to the magnetic media, each head having: 
 a sensor formed by the following process: 
 forming a free layer having tab areas on opposite sides of an active area;  
 forming a first layer of a carbon composition above the active area of the free layer;  
 forming a bias layer above the tab areas of the free layer, the bias layer being operative to substantially pin magnetic moments of the tab areas of the free layer;  
 forming a second layer of carbon composition above the tab areas of the free layer;  
 removing the layers of carbon composition and any portions of the layers overlying the layers of carbon composition.  
 
 a write element coupled to the sensor;  
   a slider for supporting the head; and    a control unit coupled to the head for controlling operation of the head.    
     
     
         2 . A magnetic storage system, comprising: 
 magnetic media;    at least one head for reading from and writing to the magnetic media, each head having: 
 a sensor formed by the following process: 
 forming a free layer having tab areas on opposite sides of an active area;  
 forming a first layer of a carbon composition above the active area of the free layer, the first layer of carbon being substantially absent from tab areas of the free area;  
 forming a layer of resist above the first layer of carbon composition;  
 removing the resist from above the tab areas;  
 forming spacer layers above the tab areas of the free layer, the spacer layers being operable to make magnetic moments of ferromagnetic layers on opposite sides thereof antiparallel;  
 forming bias layers above the spacer layers, the bias layers being operative to substantially pin magnetic moments of the tab areas of the free layer;  
 forming second layers of carbon composition above the tab areas of the free layer;  
 removing the layers of carbon composition and any portions of the layers overlying the layers of carbon composition;  
 
 a write element coupled to the sensor;  
   a slider for supporting the head; and    a control unit coupled to the head for controlling operation of the head.