Hostname: page-component-77c89778f8-n9wrp Total loading time: 0 Render date: 2024-07-18T06:06:46.186Z Has data issue: false hasContentIssue false
  • English
  • Français

High-Density Magneto-Optical Recording with DWDD and DTE

Published online by Cambridge University Press:  01 February 2011

Toshimori Miyakoshi ,
Tsutomu Shiratori ,
Yasuyuki Miyaoka  and
Yasushi Hozumi
Toshimori Miyakoshi
Affiliation:
Advanced Device Technology Development Center, Core Technology Development Headquarters Canon Inc., 3–30–2 Shimomaruko, Ohta-ku, Tokyo, 146–8501, Japan
Tsutomu Shiratori
Affiliation:
Advanced Device Technology Development Center, Core Technology Development Headquarters Canon Inc., 3–30–2 Shimomaruko, Ohta-ku, Tokyo, 146–8501, Japan
Yasuyuki Miyaoka
Affiliation:
Advanced Device Technology Development Center, Core Technology Development Headquarters Canon Inc., 3–30–2 Shimomaruko, Ohta-ku, Tokyo, 146–8501, Japan
Yasushi Hozumi
Affiliation:
Advanced Device Technology Development Center, Core Technology Development Headquarters Canon Inc., 3–30–2 Shimomaruko, Ohta-ku, Tokyo, 146–8501, Japan
Get access

Abstract

We have developed a new light intensity modulation recording method called Domain Tail Erasing (DTE). This new recording method enables high-density recording far beyond the optical resolution limit with a medium combining the layer structure of Domain Wall Displacement Detection (DWDD) with that of Light Intensity Modulation Direct Overwrite (LIMDOW). Recording performance nearly identical to that with Magnetic Field Modulation (MFM) was confirmed with this method, using conventional optics with a wavelength of 660 nm and an NA of 0.60. However, the DTE method still requires a bias magnet, which remains a disadvantage in cases in which a thinner drive apparatus is required.

We have therefore also made the bias magnets unnecessary by introducing a device to generate a magnetic field as a magnetic film included inside the medium.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 834: Symposium J – Magneto-Optical Materials for Photonics and Recording , 2004 , J3.2
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Birukawa, M., Hino, Y., Nishikiori, K., Uchida, K., Shiratori, T., Hiroki, T., Miyaoka, Y. and Hozumi, Y.: Trans. Magn. Soc. Jpn. 2, (2002) 273.Google Scholar
2. Sakamoto, T., Tanaka, Y., Imanishi, S., Furuki, M., Arakawa, N. and Fujiie, K.: Proc. SPIE, 5069 (2003) 74.Google Scholar
3. Shiratori, T., Fujii, E., Miyaoka, Y. and Hozumi, Y.: J. Magn. Soc. Jpn., 22 (1998) Suppl. S2 p. 47.Google Scholar
4. Shiratori, T.: J. Magn. Soc. Jpn, 27 (2003) 1075.Google Scholar
5. Miyakoshi, T., Miyaoka, Y. and Shiratori, T.: Jpn. J. Appl. Phys. 43 (2004) No. 7B p.4906.Google Scholar
6. Saito, J., Sato, M., Matsumoto, H. and Akasaka, H.: Jpn. J. Appl. Phys. 26 (1987) Suppl. 26–4 p. 155.Google Scholar
7. Nakaki, Y., Fukami, T., Tokunaga, T., Taguchi, M. and Tsutsumi, K.: J. Magn. Soc. Jpn. 14 (1990) 65.Google Scholar
8. Shiratori, T., Miyakoshi, T., Miyaoka, Y. and Hozumi, Y.: Proc. SPIE, 5380 (2004) 448.Google Scholar
9. Koyama, O., Nishikawa, K., Hozumi, Y., Ashinuma, T., Fujii, E., Hino, Y., Birukawa, M., Ishibashi, K., Ueda, E. and Matsumoto, T.: Jpn. J. Appl. Phys. 42 (2003) 784.Google Scholar
10. Tanaka, Y., Fujita, G., Sakamoto, T., Miki, T., Imanishi, S., Akiyama, Y., Fujiie, K., Hozumi, Y., Miyaoka, Y., Honguu, K. and Koyama, O.: Technical Digest of ODS 2004, WD6Google Scholar
11. Hiroki, T., Deguchi, K., Morita, K., Yokoyama, R., Konishi, M., Miyaoka, Y. and Koyama, O.: Technical Digest of ISOM 2004, Tu-B-07 (2004) p. 16.Google Scholar