NDLI: Anneal-less domain wall displacement detection of 15-Gbit/in2 land-groove recording using a deep groove substrate and a red laser

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Anneal-less domain wall displacement detection of 15-Gbit/in2 land-groove recording using a deep groove substrate and a red laser

Content Provider	Semantic Scholar
Author	Sakamoto, Tetsuhiro Tanaka, Yasuhito Imanishi, Shingo Furuki, Motohiro Arakawa, Nobuyuki Fujiie, Kazuhiko
Copyright Year	2003
Abstract	Domain Wall Displacement Detection (DWDD) medium with no annealing method, which we call "anneal-less" DWDD medium, has been improved for practical use. The key technologies of our progress are not only an optimum design of the magnetic film structure but also a deep groove substrate for land-groove recording with a quite unique groove form. The substrate was prepared by using the mastering process with a reactive ion etching (RIE) method. We achieved 15 Gbit/in2-areal density with wide system tolerances using the anneal-less DWDD medium, a 660nm-laser and a 0.60 NA objective lens. The areal density corresponds to 4.7 GB-capacity on a disc like MiniDisc (MD) wiht a 64 mm-diameter.
File Format	PDF HTM / HTML
DOI	10.1117/12.532519
Volume Number	5069
Alternate Webpage(s)	http://www.minidisc.org/research/15gb_no_annealing.pdf
Alternate Webpage(s)	http://minidisc.amulation.com/research/15gb_no_annealing.pdf
Alternate Webpage(s)	http://www.amulation.com/minidisc/research/15gb_no_annealing.pdf
Alternate Webpage(s)	http://www.minidisc.org//research/15gb_no_annealing.pdf
Alternate Webpage(s)	https://doi.org/10.1117/12.532519
Journal	Optical Data Storage
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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