Multi-state magnetoresistance random access cell with...

Details Multi-state magnetoresistance random access cell with... Multi-state magnetoresistance random access cell with...

2005-08-25

2008-12-16

Tsai, H. Jey (Department: 2895)

Semiconductor device manufacturing: process

Having magnetic or ferroelectric component

C438S238000, C438S381000, C257SE21665

Reexamination Certificate

active

07465589

ABSTRACT:
A multi-state magnetoresistive random access memory device having a pinned ferromagnetic region with a magnetic moment vector fixed in a preferred direction in the absence of an applied magnetic field, a non-ferromagnetic spacer layer positioned on the pinned ferromagnetic region, and a free ferromagnetic region with an anisotropy designed to provide a free magnetic moment vector within the free ferromagnetic region with N stable positions, wherein N is a whole number greater than two, positioned on the non-ferromagnetic spacer layer. The number N of stable positions can be induced by a shape anisotropy of the free ferromagnetic region wherein each N stable position has a unique resistance value.

REFERENCES:
patent: 3163853 (1964-12-01), Belson
patent: 3448438 (1969-06-01), Hansen et al.
patent: 3573760 (1971-04-01), Chang et al.
patent: 3638199 (1972-01-01), Kolankowsky et al.
patent: 3707706 (1972-12-01), Kefalas
patent: 3913080 (1975-10-01), Leo et al.
patent: 4103315 (1978-07-01), Hempstead et al.
patent: 4351712 (1982-09-01), Cuomo et al.
patent: 4356523 (1982-10-01), Yeh
patent: 4455626 (1984-06-01), Lutes
patent: 4556925 (1985-12-01), Suenaga et al.
patent: 4663685 (1987-05-01), Tsang
patent: 4719568 (1988-01-01), Carrubba et al.
patent: 4731757 (1988-03-01), Daughton et al.
patent: 4751677 (1988-06-01), Daughton et al.
patent: 4754431 (1988-06-01), Jenson
patent: 4780848 (1988-10-01), Daughton et al.
patent: 4825325 (1989-04-01), Howard
patent: 4884235 (1989-11-01), Thiele
patent: 5039655 (1991-08-01), Pisharody
patent: 5075247 (1991-12-01), Matthews
patent: 5159513 (1992-10-01), Dieny et al.
patent: 5173873 (1992-12-01), Wu et al.
patent: 5258884 (1993-11-01), Howard et al.
patent: 5268806 (1993-12-01), Goubau et al.
patent: 5284701 (1994-02-01), Hamon
patent: 5285339 (1994-02-01), Chen et al.
patent: 5301079 (1994-04-01), Cain et al.
patent: 5329486 (1994-07-01), Lage
patent: 5343422 (1994-08-01), Kung et al.
patent: 5346302 (1994-09-01), Ryu
patent: 5347485 (1994-09-01), Taguchi et al.
patent: 5348894 (1994-09-01), Gnade et al.
patent: 5349302 (1994-09-01), Cooper
patent: 5361226 (1994-11-01), Taguchi et al.
patent: 5375082 (1994-12-01), Katti et al.
patent: 5396455 (1995-03-01), Brady et al.
patent: 5398200 (1995-03-01), Mazure et al.
patent: 5408377 (1995-04-01), Gurney et al.
patent: 5420819 (1995-05-01), Pohm
patent: 5432734 (1995-07-01), Kawano et al.
patent: 5442508 (1995-08-01), Smith
patent: 5448515 (1995-09-01), Fukami et al.
patent: 5452243 (1995-09-01), Ansel et al.
patent: 5468985 (1995-11-01), Harima
patent: 5475825 (1995-12-01), Yonezawa et al.
patent: 5477842 (1995-12-01), Maruyama et al.
patent: 5496759 (1996-03-01), Yue et al.
patent: 5498561 (1996-03-01), Sakuma et al.
patent: 5528440 (1996-06-01), Fontana et al.
patent: 5534355 (1996-07-01), Okuno et al.
patent: 5534793 (1996-07-01), Nasserbakht
patent: 5541868 (1996-07-01), Prinz
patent: 5567523 (1996-10-01), Rosenblum et al.
patent: 5569617 (1996-10-01), Yeh et al.
patent: 5585986 (1996-12-01), Parkin
patent: 5587943 (1996-12-01), Torok et al.
patent: 5617071 (1997-04-01), Daughton
patent: 5636093 (1997-06-01), Gijs et al.
patent: 5640343 (1997-06-01), Gallagher et al.
patent: 5650958 (1997-07-01), Gallagher et al.
patent: 5659499 (1997-08-01), Chen et al.
patent: 5661062 (1997-08-01), Prinz
patent: 5673162 (1997-09-01), Saito
patent: 5699293 (1997-12-01), Tehrani et al.
patent: 5702831 (1997-12-01), Chen et al.
patent: 5712612 (1998-01-01), Lee et al.
patent: 5715121 (1998-02-01), Sakakima et al.
patent: 5729410 (1998-03-01), Fontana, Jr. et al.
patent: 5732016 (1998-03-01), Chen et al.
patent: 5734605 (1998-03-01), Zhu et al.
patent: 5745408 (1998-04-01), Chen et al.
patent: 5748519 (1998-05-01), Tehrani et al.
patent: 5757056 (1998-05-01), Chui
patent: 5761110 (1998-06-01), Irrinki et al.
patent: 5764567 (1998-06-01), Parkin
patent: 5766743 (1998-06-01), Fujikata et al.
patent: 5768181 (1998-06-01), Zhu et al.
patent: 5774394 (1998-06-01), Chen et al.
patent: 5774404 (1998-06-01), Eto
patent: 5786275 (1998-07-01), Kubo
patent: 5801984 (1998-09-01), Parkin
patent: 5804250 (1998-09-01), Yang
patent: 5804485 (1998-09-01), Liang
patent: 5825685 (1998-10-01), Yamane et al.
patent: 5828578 (1998-10-01), Blomgren
patent: 5831920 (1998-11-01), Chen et al.
patent: 5832534 (1998-11-01), Sing et al.
patent: 5835314 (1998-11-01), Moodera et al.
patent: 5838608 (1998-11-01), Zhu et al.
patent: 5852574 (1998-12-01), Naji
patent: 5856008 (1999-01-01), Cheong et al.
patent: 5861328 (1999-01-01), Tehrani et al.
patent: 5892708 (1999-04-01), Pohm
patent: 5894447 (1999-04-01), Takashima
patent: 5898612 (1999-04-01), Chen et al.
patent: 5902690 (1999-05-01), Tracy et al.
patent: 5905998 (1999-05-01), Pawlowski
patent: 5907784 (1999-05-01), Larson
patent: 5917749 (1999-06-01), Chen et al.
patent: 5920500 (1999-07-01), Tehrani et al.
patent: 5926414 (1999-07-01), McDowell et al.
patent: 5930164 (1999-07-01), Zhu
patent: 5932343 (1999-08-01), Hayashi et al.
patent: 5940319 (1999-08-01), Durlam et al.
patent: 5943284 (1999-08-01), Mizuno et al.
patent: 5943574 (1999-08-01), Tehrani et al.
patent: 5946227 (1999-08-01), Naji
patent: 5946228 (1999-08-01), Abraham et al.
patent: 5948553 (1999-09-01), Kamijo
patent: 5949622 (1999-09-01), Kamiguchi et al.
patent: 5949696 (1999-09-01), Threewitt
patent: 5953248 (1999-09-01), Chen et al.
patent: 5955211 (1999-09-01), Maeda et al.
patent: 5956267 (1999-09-01), Hurst et al.
patent: 5959880 (1999-09-01), Shi et al.
patent: 5966012 (1999-10-01), Parkin
patent: 5966323 (1999-10-01), Chen et al.
patent: 5976713 (1999-11-01), Fuke et al.
patent: 5978257 (1999-11-01), Zhu et al.
patent: 5982660 (1999-11-01), Bhattacharyya
patent: 5985358 (1999-11-01), Schultz et al.
patent: 5985365 (1999-11-01), Jaye
patent: 5986858 (1999-11-01), Sato et al.
patent: 5986925 (1999-11-01), Naji et al.
patent: 5990011 (1999-11-01), McTeer
patent: 5998040 (1999-12-01), Nakatani et al.
patent: 6004654 (1999-12-01), Shinjo et al.
patent: 6005753 (1999-12-01), Fontana, Jr. et al.
patent: 6016269 (2000-01-01), Peterson et al.
patent: 6023395 (2000-02-01), Dill et al.
patent: 6048739 (2000-04-01), Hurst et al.
patent: 6052302 (2000-04-01), Moyer et al.
patent: 6052303 (2000-04-01), Chevallier et al.
patent: 6054226 (2000-04-01), Takeda et al.
patent: 6055178 (2000-04-01), Naji
patent: 6055179 (2000-04-01), Koganei et al.
patent: 6069820 (2000-05-01), Inomata et al.
patent: 6072718 (2000-06-01), Abraham et al.
patent: 6083764 (2000-07-01), Chen
patent: 6097625 (2000-08-01), Scheuerlein
patent: 6097626 (2000-08-01), Brug et al.
patent: 6111784 (2000-08-01), Nishimura
patent: 6114719 (2000-09-01), Dill et al.
patent: 6120842 (2000-09-01), Lu et al.
patent: 6127045 (2000-10-01), Gill
patent: 6134060 (2000-10-01), Ryat
patent: 6134139 (2000-10-01), Bhattacharyya et al.
patent: 6145055 (2000-11-01), Fujimoto
patent: 6163477 (2000-12-01), Tran
patent: 6165803 (2000-12-01), Chen et al.
patent: 6166948 (2000-12-01), Parkin et al.
patent: 6169687 (2001-01-01), Johnson
patent: 6169689 (2001-01-01), Naji
patent: 6172903 (2001-01-01), Nishimura
patent: 6175475 (2001-01-01), Lin et al.
patent: 6175515 (2001-01-01), Peczalski et al.
patent: 6178074 (2001-01-01), Gill
patent: 6178112 (2001-01-01), Bessho et al.
patent: 6180444 (2001-01-01), Gates et al.
patent: 6185143 (2001-02-01), Perner et al.
patent: 6188549 (2001-02-01), Wiitala
patent: 6189077 (2001-02-01), Robertson et al.
patent: 6191972 (2001-02-01), Miura et al.
patent: 6195240 (2001-02-01), Gill
patent: 6198610 (2001-03-01), Kawawake et al.
patent: 6205051 (2001-03-01), Brug et al.
patent: 6205052 (2001-03-01), Slaughter et al.
patent: 6205073 (2001-03-01), Naji
patent: 6211090 (2001-04-01), Durlam et al.
patent: 6232777 (2001-05-01), Sato et al.
patent: 6233172 (2001-05-01), Chen et al.
patent: 6249406 (2001-06-01), Gill et al.
patent: 6256247 (2001-07-01), Perner
patent: 6259586 (2001-07-01), Gill
patent: 6269018 (2001-07-01), Monsma et al.
patent: 6269040 (2001-07-01), Reohr et al.
patent: 6272040 (2001-08-01), Salter et al.
patent: 6275363 (2001-08-01), Gil

Affiliated with

Also associated with

Rating

Multi-state magnetoresistance random access cell with... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-state magnetoresistance random access cell with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-state magnetoresistance random access cell with... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4047374