0.04 µm Domain Expansion Readout for the Magnetic Amplifiying Magneto Optical System

DOI Web Site Web Site 被引用文献7件 参考文献2件
  • Awano Hiroyuki
    Tsukuba Research. Laboratory., Hitachi Maxell Ltd., 6-20-1 Kinuno-dai, Yawara-mura, Tsukuba-gun, Ibaraki 305-24, Japan
  • Sekine Masaki
    Tsukuba Research. Laboratory., Hitachi Maxell Ltd., 6-20-1 Kinuno-dai, Yawara-mura, Tsukuba-gun, Ibaraki 305-24, Japan
  • Tani Manabu
    Tsukuba Research. Laboratory., Hitachi Maxell Ltd., 6-20-1 Kinuno-dai, Yawara-mura, Tsukuba-gun, Ibaraki 305-24, Japan
  • Kasajima Nobuko
    Tsukuba Research. Laboratory., Hitachi Maxell Ltd., 6-20-1 Kinuno-dai, Yawara-mura, Tsukuba-gun, Ibaraki 305-24, Japan
  • Ohta Norio
    Tsukuba Research. Laboratory., Hitachi Maxell Ltd., 6-20-1 Kinuno-dai, Yawara-mura, Tsukuba-gun, Ibaraki 305-24, Japan
  • Mitani Kenichiro
    Hypermedia Research Center, Sanyo Electric Co. Ltd., 180 Ohmori, Anpachi-cho, Anpachi-gun, Gifu 503-0195, Japan
  • Takagi Naoyuki
    Hypermedia Research Center, Sanyo Electric Co. Ltd., 180 Ohmori, Anpachi-cho, Anpachi-gun, Gifu 503-0195, Japan
  • Sumi Satoshi
    Hypermedia Research Center, Sanyo Electric Co. Ltd., 180 Ohmori, Anpachi-cho, Anpachi-gun, Gifu 503-0195, Japan

書誌事項

タイトル別名
  • 0.04.MU.m Domain Expansion Readout for the Magnetic Amplifiying Magneto Optical System.

抄録

Read/write characteristics of the magnetic amplifying magneto optical system (MAMMOS) with alternative readout fields such as carrier to noise ratio (C/N), eye pattern, jitter and bit error rate (BER), are investigated with a 640 nm wavelength laser diode and 0.55 numerical aperture of the objective lens. The C/N value of 0.12 μm is 50 dB and is independent of the mark length. A very clear eye pattern was observed. The results show that the jitter value is less than 3% compared with the window width and it is only dependent on the switching speed of the readout field. The error rate is improved by using a thin recording layer of 50 nm in thickness. The minimum domain length which yields a BER of less than 1× 10-4 is 0.045 μm (45 nm); the minimum space length is 0.10 μm (100 nm). These results are confirmed at a track pitch of about 0.40 μm. By using a digital versatile disk (DVD) pickup, the areal density can be estimated to be about 23 Gbit/in2 with the user data capacity of 30 GB/120 mmφ. By using a 400 nm blue laser diode, these values are estimated as 59 Gbit/in2 and 77 GB/120 mmφ.

収録刊行物

被引用文献 (7)*注記

もっと見る

参考文献 (2)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ