MICROSCOPIC NOISE AND SIGNAL CHARACTERISTICS OF PERPENDICULAR RECORDING MEDIUM STUDIED BY MAGNETIC FORCE MICROSCOPY

Authors
HONDA Y HIRAYAMA Y ITO K FUTAMOTO M
Citation
Y. Honda et al., MICROSCOPIC NOISE AND SIGNAL CHARACTERISTICS OF PERPENDICULAR RECORDING MEDIUM STUDIED BY MAGNETIC FORCE MICROSCOPY, IEEE transactions on magnetics, 33(5), 1997, pp. 3076-3078
Citations number
9
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
33
Issue
5
Year of publication
1997
Part
1
Pages
3076 - 3078
Database
ISI
SICI code
0018-9464(1997)33:5<3076:MNASCO>2.0.ZU;2-5
Abstract
Signal and noise characteristics around the recorded track edges of a CoCrTa perpendicular medium are investigated in a microscopic scale by magnetic force microscopy coupled with Fourier-analysis. The noise le vel within the recorded region is higher than that of DC erased region , and the medium noise near the both track-edges is higher than that m easured at the recorded track center. Sharp off-track overwrite profil es are confirmed when the low-frequency signal(45 kFCI) is off-track o verwritten by the high-frequency signal(200 kFCI).