| 摘要 |
A method of measuring a magnetic write width includes forming a data track on a discrete track medium by a write operation at a first frequency, performing write operations at a second frequency that is different from the first frequency, at both side positions along the formed data track, obtaining a track profile by scanning the data track in a track-width direction, using a magnetic field detection element, calculating an integrated profile of the obtained track profile, obtaining profile integrals by setting a distance from the data track to a position of the write operations at the second frequency to various values and by calculating the profile integrals for the respective values of the distance, and calculating a magnetic write width of the magnetic head and a magnetic write width of the discrete track medium from a relationship between the distance and the profile integrals.
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