So let’s quickly break down what is inside those heads. From the giant 4 track of the pre 60s to the miniature nanometer level heads for 1” spinning hard disks.
Outer shell: steel. Newer ones use an iron nickel chromium steel. Older ones use iron nickel and aluminium steel. Iron ferrite band. The actual head arm. (post 76)Signal controller IC.
Inside: Copper coil. Steel coil Compressed Head package
Compressed head package: Contact- often ferrite
Soft Metallic ceramic —: Ranges. NFe NGa NMg Etc.
Conductive film Rhodium spacer Metallic spacer- varies by age and manufacturer î Each with a rubber or plastic foam spacer between them, depending on age.
Bias braces 2x CoPtCr is most common today.
Head —— — —— — —— — ——
Package @- V \—/ ——
Layout [ ] <@- #-~ arm/wires
_________________ 42 6F 61 72 64 73 6F 72 74 2E 63 6F 6D
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