Magnetic force microscopy of recording heads

Magnetic force microscopy of recording heads

Magnetic force microscopy (MFM) images of a thin-film head and metal-in-gap (MIG) heads are presented. Results for the thin-film head show that it is possible to image a high-frequency magnetic field up to at least 50 MHz by using an iron-coated tip. MFM images of the MIG heads indicate intrinsic fe...

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Veröffentlicht in:IEEE transactions on magnetics 1991-11, Vol.27 (6), p.5178-5180
Hauptverfasser: Wago, K., Sueoka, K., Sai, F.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Electronics
Exact sciences and technology
Ferrites
Magnetic fields
Magnetic films
Magnetic flux
Magnetic flux density
Magnetic force microscopy
Magnetic forces
Magnetic heads
Magnetic recording
Recording and replay of audio and video signals
Saturation magnetization
Storage and reproduction of information
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Zusammenfassung:Magnetic force microscopy (MFM) images of a thin-film head and metal-in-gap (MIG) heads are presented. Results for the thin-film head show that it is possible to image a high-frequency magnetic field up to at least 50 MHz by using an iron-coated tip. MFM images of the MIG heads indicate intrinsic features such as the effect of the high saturation magnetic flux density of Sendust, a magnetic boundary at the interface of the Sendust and ferrite, electrical resonance, and a frequency limit beyond which heads cannot excite magnetic fields.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.278779