Abstract
A near field optical technique based on combined supersphere solid immersion lens (SIL) with magnetic field modulation (MFM) recording is described. A better resolution is achieved by using SIL with MFM recording in comparison with light intensity modulation (LIM). A recorded mark as small as 0.3 μm × 0.2 μm could successfully be detected. These marks were readout by the SIL head with a typical signal to noise ratio value of 36 dB. The present study demonstrates the capability to achieve a very high areal density beyond 20 Gb/in2.
Original language | English |
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Pages (from-to) | 2276-2278 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 36 |
Issue number | 5 I |
DOIs | |
Publication status | Published - Sept 2000 |
Externally published | Yes |
Event | 2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada Duration: Apr 9 2000 → Apr 12 2000 |
Keywords
- Magneto-optical recording
- Near field optics
- Numerical aperture (NA)
- Solid immersion lens (SIL)
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering