Abstract

We evaluate laser-pumped magnetic-field-modulation (LP-MFM), continuous laser-irradiated magnetic-field-modulation, and light-intensity-modulation recording in magneto-optical disks, using temperature calculations and experiments. LP-MFM is useful for recording short marks: One can record magnetic domains as small as 0.15-μm marks with LP-MFM by using a spin-polarized scanning electron microscope. LP-MFM is also useful for reducing the track pitch. Experiments showed that no cross write occurred at a 0.6-μm track pitch, and calculation showed that the heat distribution is narrow. We confirmed the advantages of LP-MFM for recording magnetically induced superresolution disks by investigating the difference in the shapes of the recorded domains.

© 1998 Optical Society of America

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  1. T. Watanabe, H. Ogawa, “High speed overwriting method for magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).
  2. K. Kataoka, T. Niihara, M. Takahashi, A. Yonezawa, “Bit shift characteristics of direct overwrite magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).
  3. G. Fujita, T. Kawashima, T. Watanabe, Y. Aoki, “A magneto-optical recording method of magnetic field modulation with pulsed laser irradiation,” Jpn. J. Appl. Phys. 28 (Suppl. 28-3), 329–333 (1989).
  4. G. Fujita, Y. Urakawa, T. Yamagami, T. Watanabe, “New approach to high-density recording on a magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 426–432 (1991).
    [CrossRef]
  5. S. Yonezawa, M. Takahashi, “Thermodynamic simulation of magnetic-field-modulation methods for pulsed laser irradiation in magneto-optical disks,” Appl. Opt. 33, 2333–2337 (1994).
    [CrossRef] [PubMed]
  6. S. Yonezawa, H. Miyamoto, “Pulsed laser irradiated magnetic field modulation method for high density magneto-optical disk,” in Technical Digests of Symposium on Optical Memory (Business Center for Academic Societies Japan, Tokyo, 1994), pp. 65–66.
  7. Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
    [CrossRef]
  8. M. Birukawa, K. Uchida, N. Miyatake, “Reading a 0.2 μm mark using the MSR method,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 103–108 (1996).
  9. A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).
  10. Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stability of magnetic field modulation recording under pulsed laser irradiation in magneto-optical recording,” in Extended Abstract, 43rd Spring Meeting of the Japanese Society of Applied Physics and Related Societies (Japanese Societies of Applied Physics, Tokyo, 1996), p. 28p-F-1 (in Japanese).
  11. S. Yonezawa, Y. Tanaka, “Laser-pumped magnetic field modulation optical recording,” in Technical Digests of Magneto-Optical Recording International Symposium (Magnetic Society of Japan, Tokyo, 1996).
  12. Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stabilities of laser pumped magnetic field modulation recording,” Vol. 12 of 1996 Technical Digest Series, Joint International Symposium on Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 271–273.
  13. J. Saito, M. Sato, M. Matsumoto, A. Akasaka, “Direct overwrite by light power modulation on magneto-optical multilayered media,” Jpn. J. Appl. Phys. 26 (Suppl. 26-4), 155–159 (1987).
  14. T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).
  15. Y. Fujii, Y. Nakaki, T. Tokunaga, K. Tsutsumi, “Direct overwriting and superresolution readout by exchange coupled multilayer film,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 167–170 (1993).
  16. K. Ishii, J. Saito, S. Kurita, M. Horikawa, H. Akasaka, “2Gbyte/130 mm capacity direct overwrite magneto-optical disk and drive,” in Optical Data Storage, G. R. Knight, H. Ooki, Y. S. Tyan, eds., Proc. SPIE2514, 211–217 (1995).
    [CrossRef]
  17. H. Matsuyama, K. Koike, “Twenty-nanometer resolution spin-polarized scanning electron microscope,” J. Electron Microsc. 43, 157–163 (1994).
  18. T. Kohashi, H. Matsuyama, K. Koike, “A spin rotator for detecting all three magnetization vector components by spin-polarized scanning electron microscopy,” Rev. Sci. Instrum. 66, 5537–5543 (1995).
    [CrossRef]
  19. K. Aratani, A. Fukumoto, M. Ohta, M. Kaneko, K. Watanabe, “Magnetically induced super resolution in novel magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 209–215 (1991).
    [CrossRef]
  20. N. Nishimura, T. Hiroki, T. Okada, “MSR disks with three magnetic layers using in-plane magnetization films,” J. Magn. Soc. Jpn. 19 (Suppl. S1), 417–420 (1995).
  21. Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).
  22. A. Takahashi, Y. Murakami, J. Hirokane, Y. Kurata, “Future perspective of magnetic superresolution,” 1996 Technical Digest Series 12, Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 233–235.

1996 (3)

Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
[CrossRef]

M. Birukawa, K. Uchida, N. Miyatake, “Reading a 0.2 μm mark using the MSR method,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 103–108 (1996).

A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).

1995 (2)

T. Kohashi, H. Matsuyama, K. Koike, “A spin rotator for detecting all three magnetization vector components by spin-polarized scanning electron microscopy,” Rev. Sci. Instrum. 66, 5537–5543 (1995).
[CrossRef]

N. Nishimura, T. Hiroki, T. Okada, “MSR disks with three magnetic layers using in-plane magnetization films,” J. Magn. Soc. Jpn. 19 (Suppl. S1), 417–420 (1995).

1994 (2)

S. Yonezawa, M. Takahashi, “Thermodynamic simulation of magnetic-field-modulation methods for pulsed laser irradiation in magneto-optical disks,” Appl. Opt. 33, 2333–2337 (1994).
[CrossRef] [PubMed]

H. Matsuyama, K. Koike, “Twenty-nanometer resolution spin-polarized scanning electron microscope,” J. Electron Microsc. 43, 157–163 (1994).

1993 (2)

Y. Fujii, Y. Nakaki, T. Tokunaga, K. Tsutsumi, “Direct overwriting and superresolution readout by exchange coupled multilayer film,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 167–170 (1993).

Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).

1989 (1)

G. Fujita, T. Kawashima, T. Watanabe, Y. Aoki, “A magneto-optical recording method of magnetic field modulation with pulsed laser irradiation,” Jpn. J. Appl. Phys. 28 (Suppl. 28-3), 329–333 (1989).

1987 (2)

J. Saito, M. Sato, M. Matsumoto, A. Akasaka, “Direct overwrite by light power modulation on magneto-optical multilayered media,” Jpn. J. Appl. Phys. 26 (Suppl. 26-4), 155–159 (1987).

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Akasaka, A.

J. Saito, M. Sato, M. Matsumoto, A. Akasaka, “Direct overwrite by light power modulation on magneto-optical multilayered media,” Jpn. J. Appl. Phys. 26 (Suppl. 26-4), 155–159 (1987).

Akasaka, H.

K. Ishii, J. Saito, S. Kurita, M. Horikawa, H. Akasaka, “2Gbyte/130 mm capacity direct overwrite magneto-optical disk and drive,” in Optical Data Storage, G. R. Knight, H. Ooki, Y. S. Tyan, eds., Proc. SPIE2514, 211–217 (1995).
[CrossRef]

Aoki, Y.

G. Fujita, T. Kawashima, T. Watanabe, Y. Aoki, “A magneto-optical recording method of magnetic field modulation with pulsed laser irradiation,” Jpn. J. Appl. Phys. 28 (Suppl. 28-3), 329–333 (1989).

Aratani, K.

K. Aratani, A. Fukumoto, M. Ohta, M. Kaneko, K. Watanabe, “Magnetically induced super resolution in novel magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 209–215 (1991).
[CrossRef]

Birukawa, M.

M. Birukawa, K. Uchida, N. Miyatake, “Reading a 0.2 μm mark using the MSR method,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 103–108 (1996).

Fujii, Y.

Y. Fujii, Y. Nakaki, T. Tokunaga, K. Tsutsumi, “Direct overwriting and superresolution readout by exchange coupled multilayer film,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 167–170 (1993).

Fujita, G.

G. Fujita, T. Kawashima, T. Watanabe, Y. Aoki, “A magneto-optical recording method of magnetic field modulation with pulsed laser irradiation,” Jpn. J. Appl. Phys. 28 (Suppl. 28-3), 329–333 (1989).

G. Fujita, Y. Urakawa, T. Yamagami, T. Watanabe, “New approach to high-density recording on a magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 426–432 (1991).
[CrossRef]

Fukumoto, A.

K. Aratani, A. Fukumoto, M. Ohta, M. Kaneko, K. Watanabe, “Magnetically induced super resolution in novel magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 209–215 (1991).
[CrossRef]

Hirokane, J.

A. Takahashi, Y. Murakami, J. Hirokane, Y. Kurata, “Future perspective of magnetic superresolution,” 1996 Technical Digest Series 12, Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 233–235.

Hiroki, T.

N. Nishimura, T. Hiroki, T. Okada, “MSR disks with three magnetic layers using in-plane magnetization films,” J. Magn. Soc. Jpn. 19 (Suppl. S1), 417–420 (1995).

Horikawa, M.

K. Ishii, J. Saito, S. Kurita, M. Horikawa, H. Akasaka, “2Gbyte/130 mm capacity direct overwrite magneto-optical disk and drive,” in Optical Data Storage, G. R. Knight, H. Ooki, Y. S. Tyan, eds., Proc. SPIE2514, 211–217 (1995).
[CrossRef]

Iketani, N.

Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).

Ishii, K.

K. Ishii, J. Saito, S. Kurita, M. Horikawa, H. Akasaka, “2Gbyte/130 mm capacity direct overwrite magneto-optical disk and drive,” in Optical Data Storage, G. R. Knight, H. Ooki, Y. S. Tyan, eds., Proc. SPIE2514, 211–217 (1995).
[CrossRef]

Ishikawa, T.

Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).

Kaneko, M.

A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).

K. Aratani, A. Fukumoto, M. Ohta, M. Kaneko, K. Watanabe, “Magnetically induced super resolution in novel magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 209–215 (1991).
[CrossRef]

Kanno, M.

A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).

Kataoka, K.

K. Kataoka, T. Niihara, M. Takahashi, A. Yonezawa, “Bit shift characteristics of direct overwrite magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).

Kawashima, T.

G. Fujita, T. Kawashima, T. Watanabe, Y. Aoki, “A magneto-optical recording method of magnetic field modulation with pulsed laser irradiation,” Jpn. J. Appl. Phys. 28 (Suppl. 28-3), 329–333 (1989).

Kohashi, T.

T. Kohashi, H. Matsuyama, K. Koike, “A spin rotator for detecting all three magnetization vector components by spin-polarized scanning electron microscopy,” Rev. Sci. Instrum. 66, 5537–5543 (1995).
[CrossRef]

Koike, K.

T. Kohashi, H. Matsuyama, K. Koike, “A spin rotator for detecting all three magnetization vector components by spin-polarized scanning electron microscopy,” Rev. Sci. Instrum. 66, 5537–5543 (1995).
[CrossRef]

H. Matsuyama, K. Koike, “Twenty-nanometer resolution spin-polarized scanning electron microscope,” J. Electron Microsc. 43, 157–163 (1994).

Kurata, Y.

A. Takahashi, Y. Murakami, J. Hirokane, Y. Kurata, “Future perspective of magnetic superresolution,” 1996 Technical Digest Series 12, Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 233–235.

Kurebayashi, M.

Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stability of magnetic field modulation recording under pulsed laser irradiation in magneto-optical recording,” in Extended Abstract, 43rd Spring Meeting of the Japanese Society of Applied Physics and Related Societies (Japanese Societies of Applied Physics, Tokyo, 1996), p. 28p-F-1 (in Japanese).

Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stabilities of laser pumped magnetic field modulation recording,” Vol. 12 of 1996 Technical Digest Series, Joint International Symposium on Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 271–273.

Kurita, S.

K. Ishii, J. Saito, S. Kurita, M. Horikawa, H. Akasaka, “2Gbyte/130 mm capacity direct overwrite magneto-optical disk and drive,” in Optical Data Storage, G. R. Knight, H. Ooki, Y. S. Tyan, eds., Proc. SPIE2514, 211–217 (1995).
[CrossRef]

Matsumoto, M.

J. Saito, M. Sato, M. Matsumoto, A. Akasaka, “Direct overwrite by light power modulation on magneto-optical multilayered media,” Jpn. J. Appl. Phys. 26 (Suppl. 26-4), 155–159 (1987).

Matsuyama, H.

T. Kohashi, H. Matsuyama, K. Koike, “A spin rotator for detecting all three magnetization vector components by spin-polarized scanning electron microscopy,” Rev. Sci. Instrum. 66, 5537–5543 (1995).
[CrossRef]

H. Matsuyama, K. Koike, “Twenty-nanometer resolution spin-polarized scanning electron microscope,” J. Electron Microsc. 43, 157–163 (1994).

Miyamoto, H.

S. Yonezawa, H. Miyamoto, “Pulsed laser irradiated magnetic field modulation method for high density magneto-optical disk,” in Technical Digests of Symposium on Optical Memory (Business Center for Academic Societies Japan, Tokyo, 1994), pp. 65–66.

Miyamura, Y.

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Miyatake, N.

M. Birukawa, K. Uchida, N. Miyatake, “Reading a 0.2 μm mark using the MSR method,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 103–108 (1996).

Murakami, Y.

Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).

A. Takahashi, Y. Murakami, J. Hirokane, Y. Kurata, “Future perspective of magnetic superresolution,” 1996 Technical Digest Series 12, Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 233–235.

Murata, S.

Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
[CrossRef]

Nakajima, J.

Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).

Nakaki, Y.

Y. Fujii, Y. Nakaki, T. Tokunaga, K. Tsutsumi, “Direct overwriting and superresolution readout by exchange coupled multilayer film,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 167–170 (1993).

Nakao, I.

A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).

Nakao, T.

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Nakaoki, A.

A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).

Niihara, T.

K. Kataoka, T. Niihara, M. Takahashi, A. Yonezawa, “Bit shift characteristics of direct overwrite magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).

Nishimura, N.

N. Nishimura, T. Hiroki, T. Okada, “MSR disks with three magnetic layers using in-plane magnetization films,” J. Magn. Soc. Jpn. 19 (Suppl. S1), 417–420 (1995).

Ogawa, H.

T. Watanabe, H. Ogawa, “High speed overwriting method for magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).

Ohta, K.

Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).

Ohta, M.

K. Aratani, A. Fukumoto, M. Ohta, M. Kaneko, K. Watanabe, “Magnetically induced super resolution in novel magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 209–215 (1991).
[CrossRef]

Ohta, N.

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Ojima, M.

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Okada, T.

N. Nishimura, T. Hiroki, T. Okada, “MSR disks with three magnetic layers using in-plane magnetization films,” J. Magn. Soc. Jpn. 19 (Suppl. S1), 417–420 (1995).

Okamine, S.

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Saito, J.

J. Saito, M. Sato, M. Matsumoto, A. Akasaka, “Direct overwrite by light power modulation on magneto-optical multilayered media,” Jpn. J. Appl. Phys. 26 (Suppl. 26-4), 155–159 (1987).

K. Ishii, J. Saito, S. Kurita, M. Horikawa, H. Akasaka, “2Gbyte/130 mm capacity direct overwrite magneto-optical disk and drive,” in Optical Data Storage, G. R. Knight, H. Ooki, Y. S. Tyan, eds., Proc. SPIE2514, 211–217 (1995).
[CrossRef]

Sakamoto, T.

A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).

Sato, M.

J. Saito, M. Sato, M. Matsumoto, A. Akasaka, “Direct overwrite by light power modulation on magneto-optical multilayered media,” Jpn. J. Appl. Phys. 26 (Suppl. 26-4), 155–159 (1987).

Shinoda, M.

A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).

Sukeda, H.

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Sumi, S.

Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
[CrossRef]

Suzuki, Y.

Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
[CrossRef]

Takahashi, A.

Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).

A. Takahashi, Y. Murakami, J. Hirokane, Y. Kurata, “Future perspective of magnetic superresolution,” 1996 Technical Digest Series 12, Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 233–235.

Takahashi, M.

S. Yonezawa, M. Takahashi, “Thermodynamic simulation of magnetic-field-modulation methods for pulsed laser irradiation in magneto-optical disks,” Appl. Opt. 33, 2333–2337 (1994).
[CrossRef] [PubMed]

K. Kataoka, T. Niihara, M. Takahashi, A. Yonezawa, “Bit shift characteristics of direct overwrite magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).

Takeuchi, Y.

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Tanaka, Y.

S. Yonezawa, Y. Tanaka, “Laser-pumped magnetic field modulation optical recording,” in Technical Digests of Magneto-Optical Recording International Symposium (Magnetic Society of Japan, Tokyo, 1996).

Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stabilities of laser pumped magnetic field modulation recording,” Vol. 12 of 1996 Technical Digest Series, Joint International Symposium on Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 271–273.

Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stability of magnetic field modulation recording under pulsed laser irradiation in magneto-optical recording,” in Extended Abstract, 43rd Spring Meeting of the Japanese Society of Applied Physics and Related Societies (Japanese Societies of Applied Physics, Tokyo, 1996), p. 28p-F-1 (in Japanese).

Tanase, K.

Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
[CrossRef]

Tokunaga, T.

Y. Fujii, Y. Nakaki, T. Tokunaga, K. Tsutsumi, “Direct overwriting and superresolution readout by exchange coupled multilayer film,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 167–170 (1993).

Torazawa, K.

Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
[CrossRef]

Tsutsumi, K.

Y. Fujii, Y. Nakaki, T. Tokunaga, K. Tsutsumi, “Direct overwriting and superresolution readout by exchange coupled multilayer film,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 167–170 (1993).

Uchida, K.

M. Birukawa, K. Uchida, N. Miyatake, “Reading a 0.2 μm mark using the MSR method,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 103–108 (1996).

Urakawa, Y.

G. Fujita, Y. Urakawa, T. Yamagami, T. Watanabe, “New approach to high-density recording on a magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 426–432 (1991).
[CrossRef]

Watanabe, K.

K. Aratani, A. Fukumoto, M. Ohta, M. Kaneko, K. Watanabe, “Magnetically induced super resolution in novel magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 209–215 (1991).
[CrossRef]

Watanabe, T.

G. Fujita, T. Kawashima, T. Watanabe, Y. Aoki, “A magneto-optical recording method of magnetic field modulation with pulsed laser irradiation,” Jpn. J. Appl. Phys. 28 (Suppl. 28-3), 329–333 (1989).

T. Watanabe, H. Ogawa, “High speed overwriting method for magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).

G. Fujita, Y. Urakawa, T. Yamagami, T. Watanabe, “New approach to high-density recording on a magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 426–432 (1991).
[CrossRef]

Yamagami, T.

G. Fujita, Y. Urakawa, T. Yamagami, T. Watanabe, “New approach to high-density recording on a magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 426–432 (1991).
[CrossRef]

Yamaguchi, A.

Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
[CrossRef]

Yonezawa, A.

K. Kataoka, T. Niihara, M. Takahashi, A. Yonezawa, “Bit shift characteristics of direct overwrite magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).

Yonezawa, S.

S. Yonezawa, M. Takahashi, “Thermodynamic simulation of magnetic-field-modulation methods for pulsed laser irradiation in magneto-optical disks,” Appl. Opt. 33, 2333–2337 (1994).
[CrossRef] [PubMed]

Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stability of magnetic field modulation recording under pulsed laser irradiation in magneto-optical recording,” in Extended Abstract, 43rd Spring Meeting of the Japanese Society of Applied Physics and Related Societies (Japanese Societies of Applied Physics, Tokyo, 1996), p. 28p-F-1 (in Japanese).

S. Yonezawa, Y. Tanaka, “Laser-pumped magnetic field modulation optical recording,” in Technical Digests of Magneto-Optical Recording International Symposium (Magnetic Society of Japan, Tokyo, 1996).

Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stabilities of laser pumped magnetic field modulation recording,” Vol. 12 of 1996 Technical Digest Series, Joint International Symposium on Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 271–273.

S. Yonezawa, H. Miyamoto, “Pulsed laser irradiated magnetic field modulation method for high density magneto-optical disk,” in Technical Digests of Symposium on Optical Memory (Business Center for Academic Societies Japan, Tokyo, 1994), pp. 65–66.

Appl. Opt. (1)

IEEE Trans. Magn. (1)

Y. Suzuki, K. Tanase, A. Yamaguchi, S. Murata, S. Sumi, K. Torazawa, “High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation,” IEEE Trans. Magn. 32, 4067–4069 (1996).
[CrossRef]

J. Electron Microsc. (1)

H. Matsuyama, K. Koike, “Twenty-nanometer resolution spin-polarized scanning electron microscope,” J. Electron Microsc. 43, 157–163 (1994).

J. Magn. Soc. Jpn. (5)

Y. Fujii, Y. Nakaki, T. Tokunaga, K. Tsutsumi, “Direct overwriting and superresolution readout by exchange coupled multilayer film,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 167–170 (1993).

M. Birukawa, K. Uchida, N. Miyatake, “Reading a 0.2 μm mark using the MSR method,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 103–108 (1996).

A. Nakaoki, M. Kanno, I. Nakao, T. Sakamoto, M. Shinoda, M. Kaneko, “Recording on land and groove with magnetically induced super resolution,” J. Magn. Soc. Jpn. 20 (Suppl. S1), 243–246 (1996).

N. Nishimura, T. Hiroki, T. Okada, “MSR disks with three magnetic layers using in-plane magnetization films,” J. Magn. Soc. Jpn. 19 (Suppl. S1), 417–420 (1995).

Y. Murakami, N. Iketani, J. Nakajima, A. Takahashi, K. Ohta, T. Ishikawa, “Superresolution readout of a magneto-optical disk with an in-plane magnetization layer,” J. Magn. Soc. Jpn. 17 (Suppl. S1), 201–204 (1993).

Jpn. J. Appl. Phys. (2)

G. Fujita, T. Kawashima, T. Watanabe, Y. Aoki, “A magneto-optical recording method of magnetic field modulation with pulsed laser irradiation,” Jpn. J. Appl. Phys. 28 (Suppl. 28-3), 329–333 (1989).

J. Saito, M. Sato, M. Matsumoto, A. Akasaka, “Direct overwrite by light power modulation on magneto-optical multilayered media,” Jpn. J. Appl. Phys. 26 (Suppl. 26-4), 155–159 (1987).

Jpn. J. of Appl. Phys. (1)

T. Nakao, M. Ojima, Y. Miyamura, S. Okamine, H. Sukeda, N. Ohta, Y. Takeuchi, “High speed overwritable magneto-optic recording,” Jpn. J. of Appl. Phys. 26 (Suppl. 26-4), 149–154 (1987).

Rev. Sci. Instrum. (1)

T. Kohashi, H. Matsuyama, K. Koike, “A spin rotator for detecting all three magnetization vector components by spin-polarized scanning electron microscopy,” Rev. Sci. Instrum. 66, 5537–5543 (1995).
[CrossRef]

Other (10)

K. Aratani, A. Fukumoto, M. Ohta, M. Kaneko, K. Watanabe, “Magnetically induced super resolution in novel magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 209–215 (1991).
[CrossRef]

K. Ishii, J. Saito, S. Kurita, M. Horikawa, H. Akasaka, “2Gbyte/130 mm capacity direct overwrite magneto-optical disk and drive,” in Optical Data Storage, G. R. Knight, H. Ooki, Y. S. Tyan, eds., Proc. SPIE2514, 211–217 (1995).
[CrossRef]

S. Yonezawa, H. Miyamoto, “Pulsed laser irradiated magnetic field modulation method for high density magneto-optical disk,” in Technical Digests of Symposium on Optical Memory (Business Center for Academic Societies Japan, Tokyo, 1994), pp. 65–66.

G. Fujita, Y. Urakawa, T. Yamagami, T. Watanabe, “New approach to high-density recording on a magneto-optical disk,” in Optical Data Storage, D. B. Carlin, D. B. Kay, eds., Proc. SPIE1499, 426–432 (1991).
[CrossRef]

T. Watanabe, H. Ogawa, “High speed overwriting method for magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).

K. Kataoka, T. Niihara, M. Takahashi, A. Yonezawa, “Bit shift characteristics of direct overwrite magneto-optical recording,” in Digests of Optical Memory Symposium (Japanese Society of Applied Physics, Tokyo, 1988), pp. 47–48 (in Japanese).

Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stability of magnetic field modulation recording under pulsed laser irradiation in magneto-optical recording,” in Extended Abstract, 43rd Spring Meeting of the Japanese Society of Applied Physics and Related Societies (Japanese Societies of Applied Physics, Tokyo, 1996), p. 28p-F-1 (in Japanese).

S. Yonezawa, Y. Tanaka, “Laser-pumped magnetic field modulation optical recording,” in Technical Digests of Magneto-Optical Recording International Symposium (Magnetic Society of Japan, Tokyo, 1996).

Y. Tanaka, M. Kurebayashi, S. Yonezawa, “Stabilities of laser pumped magnetic field modulation recording,” Vol. 12 of 1996 Technical Digest Series, Joint International Symposium on Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 271–273.

A. Takahashi, Y. Murakami, J. Hirokane, Y. Kurata, “Future perspective of magnetic superresolution,” 1996 Technical Digest Series 12, Optical Memory and Optical Data Storage (Optical Society of America, Washington, D.C., 1996), pp. 233–235.

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Figures (10)

Fig. 1
Fig. 1

Principles of three recording methods: (a) LIM, (b) DC-MFM, and (c) LP-MFM.

Fig. 2
Fig. 2

Spin-SEM images of magnetic domains on a conventional magneto-optical disk.

Fig. 3
Fig. 3

Light intensity distribution.

Fig. 4
Fig. 4

Temperature distributions across the track for a conventional magneto-optical disk under continuous and pulsed laser irradiation.

Fig. 5
Fig. 5

Dependence of the carrier level of 0.75-μm repetitive marks and jitter of RLL(1,7) random pattern on recording power recorded with (a) DC-MFM and (b) LP-MFM. The minimum random-pattern length was 0.5 μm.

Fig. 6
Fig. 6

Relationship between recording power and bit-error rate. The modulation code was NRZI, and the linear bit density was 0.25 μm/bit.

Fig. 7
Fig. 7

Spin-SEM images of the cross write on the ST-CAD disk.

Fig. 8
Fig. 8

(a) Carrier level of 0.4-μm repetitive marks (at 6.25 MHz) and (b) noise level at 1 MHz for each recording method.

Fig. 9
Fig. 9

Temperature distribution on the conventional MO and the EX-CAD disks when continuous- and pulsed-laser beams were irradiated.

Fig. 10
Fig. 10

Eye patterns of the EX-CAD disk recorded with (a) DC-MFM and (b) LP-MFM. The linear bit density was 0.3 μm/bit.

Tables (2)

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Table 1 Thermal Constants

Tables Icon

Table 2 Structure of Evaluated Disks

Equations (2)

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ρ C T new - T old Δ t = div κ   grad T new + div κ   grad T old 2 + F t 1 - R 2 P π r 0 2 1 h × exp - 2 x - vt 2 + y 2 r 0 2 ,
ρ C ν   grad   T = div κ   grad   T + 1 - R 2 P π r 0 2 1 h × exp - 2 x 2 + y 2 r 0 2 .

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