Dynamic magnetic information storage or retrieval – General recording or reproducing
Reexamination Certificate
2006-06-27
2006-06-27
Wong, K. (Department: 2651)
Dynamic magnetic information storage or retrieval
General recording or reproducing
C369S126000
Reexamination Certificate
active
07068452
ABSTRACT:
Stable writing is performed in a super high density hard disk where writing by magnetic field is difficult. A layered thin film structure including at least a magnetic metallic layer/a non-magnetic metallic layer/a magnetic metallic layer is formed, and a metallic probe is brought close to this multilayer film on the order of nano-meters. A quantum well state created in the multilayer film is changed by applying a voltage between the metallic probe and the multilayer film, resulting in a relative magnetic field between the magnetic metallic layers being changed. At this time, an assistance magnetic field is applied in the writing magnetization direction.
REFERENCES:
patent: 5940314 (1999-08-01), Suzuki et al.
patent: 5949600 (1999-09-01), Akiyama et al.
patent: 6061265 (2000-05-01), Hannah
patent: 6388912 (2002-05-01), Hannah et al.
patent: 6480412 (2002-11-01), Bessho et al.
patent: 6741524 (2004-05-01), Ichihara et al.
patent: 6770386 (2004-08-01), Hara et al.
patent: 6865044 (2005-03-01), Albrecht et al.
patent: 6906879 (2005-06-01), Albrecht et al.
patent: 6912148 (2005-06-01), Hannah et al.
patent: 6930847 (2005-08-01), Kai et al.
patent: 2003/0102863 (2003-06-01), Wu
patent: 2004/0228024 (2004-11-01), Ogawa et al.
patent: 2005/0128886 (2005-06-01), Ogawa et al.
patent: 2005/0163962 (2005-07-01), Kawato et al.
patent: 2001-196661 (2000-04-01), None
patent: 2004-342183 (2003-05-01), None
J. C. Slonczewski, “Current-Driven Excitation Magnetic Multilayers”, Journal of Magnetism and Magnetic Materials, vol. 159 (1996), pp. L1-L7.
J.E. Mattson et al., “Photoinduced Antiferromagnetic Interlayer Coupling in Fe/(Fe-Si) Superlattices”, The American Physics Society, Physical Review Letters, vol. 71, No. 1 (Jul. 5, 1993), pp. 185-188.
Chun-Yeol You et al., “Voltage Controlled Spintronic Devices for Logic Applications”, Journal of Applied Physics, vol. 87, No. 9 (May 1, 2000), pp. 5215-5217.
Ogawa Susumu
Takahashi Hiromasa
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Habermehl James L
Hitachi , Ltd.
Reed Smith LLP
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