Abstract
We visualized the magnetic flux density of the cross track direction in the pseudo soft underlayer (SUL) of perpendicular magnetic recording media. We deposited a pseudo-SUL on the fabricated slider of a perpendicular magnetic recording head, and used electron holography to visualize and quantify the magnetic flux magnitude and distribution in the pseudo-SUL. We observed the pseudo-SUL magnetized by the write field from the writer pole tip. The magnetic flux magnitude and full width at half maximum increased with an increasing write field. We observed a correspondence between an actual recording situation and the electron holography observation.
Original language | English |
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Pages (from-to) | 925-927 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 46 |
Issue number | 3 PART 2 |
DOIs | |
Publication status | Published - 2010 Mar |
Keywords
- Electron holography
- Magnetic recording head
- Magnetic recording media
- Perpendicular magnetic recording
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering