THIN FILM MAGNETIC HEAD AND PRODUCTION THEREFOR

• Main Authors: SEKI TAKATERU, ISONO CHIHIRO, TAMURA TOSHIO
• Format: Patent
• Language: English
• Published: 17.09.1999
• Edition: 6
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

PROBLEM TO BE SOLVED: To improve the yield in a process by forming plural elements in a slider while shifting them in the direction of a gap depth and selecting elements satisfying a magnetic gap depth and performance after the grinding works of floating surfaces. SOLUTION: First and second element 1, 2 are formed on ALTiC(Al2 O3 -TiC) material 7 in an adjacent relation and by being mutually shifted in a depth direction by the twice of the depth accuraccy (a) of the magnetic gap of the element, that is, 2a. A block in which a wafer is cutingly divided into a prescribe size is adhered to a grinding jig and the floating surface of the block is ground so that the depths of the magnetic gaps of the elements enter into desired dimensional ranges. Rails 8 for making the floating surface float from a magnetic disk are formed with ion milling. After the block is cutingly divided into individual sliders, floating surfaces are ground finished. Then, after the sliders are respectively mounted on suspensions, depths of the magnetic gaps and performance are measured and electrodes 3, 6 being elements for readout and electrodes 4, 5 being elements for write are selectively connected to the elements 1, 2 by selecting the elements 1, 2 satisfying the specifications.