Static information storage and retrieval – Systems using particular element – Magnetic thin film
Reexamination Certificate
2011-03-22
2011-03-22
Hoang, Huan (Department: 2827)
Static information storage and retrieval
Systems using particular element
Magnetic thin film
C365S173000, C365S170000, C365S158000
Reexamination Certificate
active
07911832
ABSTRACT:
A high speed and low power method to control and switch the magnetization direction and/or helicity of a magnetic region in a magnetic device for memory cells using spin polarized electrical current. The magnetic device comprises a reference magnetic layer with a fixed magnetic helicity and/or magnetization direction and a free magnetic layer with a changeable magnetic helicity and/or magnetization direction. The fixed magnetic layer and the free magnetic layer are preferably separated by a non-magnetic layer. The fixed and free magnetic layers may have magnetization directions at a substantially non-zero angle relative to the layer normal. A current can be applied to the device to induce a torque that alters the magnetic state of the device so that it can act as a magnetic memory for writing information. The resistance, which depends on the magnetic state of the device, is measured to read out the information stored in the device.
REFERENCES:
patent: 5541868 (1996-07-01), Prinz
patent: 5629549 (1997-05-01), Johnson
patent: 5640343 (1997-06-01), Gallagher et al.
patent: 5654566 (1997-08-01), Johnson
patent: 5691936 (1997-11-01), Sakakima et al.
patent: 5695846 (1997-12-01), Lange et al.
patent: 5695864 (1997-12-01), Slonczewski
patent: 5966323 (1999-10-01), Chen et al.
patent: 6016269 (2000-01-01), Peterson et al.
patent: 6055179 (2000-04-01), Koganei et al.
patent: 6124711 (2000-09-01), Tanaka et al.
patent: 6140838 (2000-10-01), Johnson
patent: 6172902 (2001-01-01), Wegrowe et al.
patent: 6233172 (2001-05-01), Chen et al.
patent: 6243288 (2001-06-01), Ishikawa et al.
patent: 6252796 (2001-06-01), Lenssen et al.
patent: 6272036 (2001-08-01), You et al.
patent: 6292389 (2001-09-01), Chen et al.
patent: 6347049 (2002-02-01), Childress et al.
patent: 6376260 (2002-04-01), Chen et al.
patent: 6385082 (2002-05-01), Abraham et al.
patent: 6436526 (2002-08-01), Odagawa et al.
patent: 6493197 (2002-12-01), Ito et al.
patent: 6532164 (2003-03-01), Redon et al.
patent: 6563681 (2003-05-01), Sasaki et al.
patent: 6603677 (2003-08-01), Redon et al.
patent: 6653154 (2003-11-01), Doan et al.
patent: 6710984 (2004-03-01), Yuasa et al.
patent: 6713195 (2004-03-01), Wang et al.
patent: 6714444 (2004-03-01), Huai et al.
patent: 6744086 (2004-06-01), Daughton et al.
patent: 6765824 (2004-07-01), Kishi et al.
patent: 6773515 (2004-08-01), Li et al.
patent: 6777730 (2004-08-01), Daughton et al.
patent: 6812537 (2004-11-01), Okazawa et al.
patent: 6829161 (2004-12-01), Huai et al.
patent: 6835423 (2004-12-01), Chen et al.
patent: 6838740 (2005-01-01), Huai et al.
patent: 6842317 (2005-01-01), Sugita et al.
patent: 6847547 (2005-01-01), Albert et al.
patent: 6888742 (2005-05-01), Nguyen et al.
patent: 6906369 (2005-06-01), Ross et al.
patent: 6920063 (2005-07-01), Huai et al.
patent: 6933155 (2005-08-01), Albert et al.
patent: 6958927 (2005-10-01), Nguyen et al.
patent: 6967863 (2005-11-01), Huai
patent: 6980469 (2005-12-01), Kent et al.
patent: 6985385 (2006-01-01), Nguyen et al.
patent: 6992359 (2006-01-01), Nguyen et al.
patent: 6995962 (2006-02-01), Saito et al.
patent: 7002839 (2006-02-01), Kawabata et al.
patent: 7005958 (2006-02-01), Wan
patent: 7009877 (2006-03-01), Huai et al.
patent: 7170778 (2007-01-01), Kent et al.
patent: 7190611 (2007-03-01), Nguyen et al.
patent: 7203129 (2007-04-01), Lin et al.
patent: 7227773 (2007-06-01), Nguyen et al.
patent: 7262941 (2007-08-01), Li et al.
patent: 7307876 (2007-12-01), Kent et al.
patent: 2002/0090533 (2002-07-01), Zhang et al.
patent: 2004/0094785 (2004-05-01), Zhu et al.
patent: 2004/0130936 (2004-07-01), Nguyen et al.
patent: 2005/0041342 (2005-02-01), Huai et al.
patent: 2005/0063222 (2005-03-01), Huai et al.
patent: 2005/0104101 (2005-05-01), Sun et al.
patent: 2005/0128842 (2005-06-01), Wei
patent: 2005/0136600 (2005-06-01), Huai
patent: 2005/0158881 (2005-07-01), Sharma
patent: 2005/0180202 (2005-08-01), Huai et al.
patent: 2005/0184839 (2005-08-01), Nguyen et al.
patent: 2005/0201023 (2005-09-01), Huai et al.
patent: 2005/0237787 (2005-10-01), Huai et al.
patent: 2005/0280058 (2005-12-01), Pakala et al.
patent: 2006/0018057 (2006-01-01), Huai
patent: 2006/0049472 (2006-03-01), Diao et al.
patent: 2007/0019337 (2007-01-01), Apalkov et al.
patent: 1345277 (2003-09-01), None
patent: 41004012 (1998-01-01), None
US 7,026,672, 04/2006, Pakala et al. (withdrawn)
Lee et al., Analytical investigation of spin-transfer dynamics using a perpendicular-to-plane polarizer,,Applied Physics Letters86, pp. 022505-022505-3 2005.
Martens et al. “Magnetic Reversal in Nanoscopic Ferromagnetic Rings”, NSF grants PHY-0351964(DLS) . . . (10 pages).
Martens et al. “Thermally Induced Magnetic Switching in Thin Ferromagnetic Annuli”, NSF grants PHY-0351964 (DLS), 11 pages.
Beaujour Jean-Marc
Kent Andrew
Stein Daniel
Foley & Lardner LLP
Hidalgo Fernando N
Hoang Huan
New York University
LandOfFree
High speed low power magnetic devices based on current... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High speed low power magnetic devices based on current..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed low power magnetic devices based on current... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2665607