A magnetic media having servo track written with a thin film magnetic recording head utilizing a servo pattern fabricated using a focused ion beam (FIB). The recording head is fabricated by sputtering a magnetically permeable thin film onto a substrate. A gap pattern is defined on the thin film and the FIB cuts a gap through the thin film based on that pattern. Once completed, the recording head is used to write a servo track onto a magnetic tape. The servo track then allows for the precise alignment of data read heads based on the positional information obtained by a servo read head which scans the continuously variable servo track.

 
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> Magnetic tape cassettes and processes for producing them

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