Magnetic head slider

Abstract

A magnetic head slider comprises a slider body comprising a base portion made of an altic material and an element-forming portion, made of alumina, having formed thereon magnetic conversion elements. Slider-flying rails protruding beyond the surface of the slider body are provided. A first protection film is formed on the surface of the slider body to cover a boundary between the element-forming portion and the base portion to thereby prevent a lubricant of a magnetic disk from depositing on the boundary between the base portion and the element-forming portion. Second protection films are formed on the surfaces of the slider-flying rails to protect the magnetic conversion elements from being corroded and damaged. Further, when pneumatic bearings are provided on the slider-flying rails, third protection films are formed on the surfaces of the pneumatic bearings.

1 . A magnetic head slider comprising: 
 a slider body comprising a base portion and an element-forming portion joined to said base portion and having formed thereon magnetic conversion elements;    a first surface of said slider body that faces a magnetic medium during use of said slider;    slider-flying rails protruding beyond the first surface of said slider body and having second surfaces;    a first protection film formed on the first surface of the slider body and covering a boundary between said element-forming portion and said base portion; and    second protection films formed on the second surfaces of said slider-flying rails to protect said magnetic conversion elements.    
   
   
       2 . A magnetic head slider according to  claim 1 , wherein the thickness of said first protection film is different from the thickness of said second protection films.  
   
   
       3 . A magnetic head slider according to  claim 2 , wherein the thickness of said first protection film is greater than the thickness of said second protection films.  
   
   
       4 . A magnetic head slider according to  claim 1 , wherein said first protection film and said second protection film each comprise a carbon film containing fluorine, the content of fluorine in said first protection film being greater than the content of fluorine in said second protection films.  
   
   
       5 - 8 . (canceled)