Reduced power magnetoresistive random access memory elements

Details Reduced power magnetoresistive random access memory elements Reduced power magnetoresistive random access memory elements

2006-10-31

2006-10-31

Ngô, Ngân V. (Department: 2818)

Semiconductor device manufacturing: process

Having magnetic or ferroelectric component

C365S033000, C365S158000, C365S173000, C365S225500

Reexamination Certificate

active

07129098

ABSTRACT:
Low power magnetoresistive random access memory elements and methods for fabricating the same are provided. In one embodiment, a magnetoresistive random access device has an array of memory elements. Each element comprises a fixed magnetic portion, a tunnel barrier portion, and a free SAF structure. The array has a finite magnetic field programming window Hwin represented by the equation Hwin≈(Hsat−Nσsat)−(Hsw+Nσsw), whereHswis a mean switching field for the array,Hsatis a mean saturation field for the array, and Hsw for each memory element is represented by the equation HSW≅√{square root over (HkHSAT)}, where Hkrepresents a total anisotropy and HSATrepresents an anti-ferromagnetic coupling saturation field for the free SAF structure of each memory element. N is an integer greater than or equal to 1. Hk, HSAT, and N for each memory element are selected such that the array requires current to operate that is below a predetermined current 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: 5905996 (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: 5985356 (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

Affiliated with

Also associated with

Rating

Reduced power magnetoresistive random access memory elements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reduced power magnetoresistive random access memory elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduced power magnetoresistive random access memory elements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3713949