flux transition

flux transition

The change of magnetic polarity from 0 to 1 or 1 to 0 on a magnetic disk or tape.
References in periodicals archive ?
The TR-2 has a data density of 22,125 flux transitions per inch (ftpi), while TR-3 stands at 44,250 ftpi.
315-inch high-coercivity 550 oersted (Oe) gamma ferric oxide media and has a data density of 14,700 flux transitions per inch (ftpi).
The higher coercivity of barium ferrite provides recording densities of up to 70,000 flux transitions per inch (ftpi).