KR20010062357A - 이중 자기 상태의 자기 소자와 그 제작법 - Google Patents
이중 자기 상태의 자기 소자와 그 제작법 Download PDFInfo
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- KR20010062357A KR20010062357A KR1020000075640A KR20000075640A KR20010062357A KR 20010062357 A KR20010062357 A KR 20010062357A KR 1020000075640 A KR1020000075640 A KR 1020000075640A KR 20000075640 A KR20000075640 A KR 20000075640A KR 20010062357 A KR20010062357 A KR 20010062357A
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- Prior art keywords
- layer
- ferromagnetic layer
- magnetic
- pinned
- electrode
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 147
- 230000009977 dual effect Effects 0.000 title claims description 12
- 238000000034 method Methods 0.000 title description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 50
- 238000005859 coupling reaction Methods 0.000 claims abstract description 50
- 230000008878 coupling Effects 0.000 claims abstract description 49
- 239000010409 thin film Substances 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 229
- 230000005294 ferromagnetic effect Effects 0.000 claims description 96
- 125000006850 spacer group Chemical group 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 11
- 230000005415 magnetization Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 5
- 239000011229 interlayer Substances 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000005290 antiferromagnetic effect Effects 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000004044 response Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000005530 etching Methods 0.000 description 7
- 239000011241 protective layer Substances 0.000 description 7
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052707 ruthenium Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000003466 anti-cipated effect Effects 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000013598 vector Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- SHMWNGFNWYELHA-UHFFFAOYSA-N iridium manganese Chemical compound [Mn].[Ir] SHMWNGFNWYELHA-UHFFFAOYSA-N 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005316 antiferromagnetic exchange Effects 0.000 description 1
- 239000002885 antiferromagnetic material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- IGOJMROYPFZEOR-UHFFFAOYSA-N manganese platinum Chemical compound [Mn].[Pt] IGOJMROYPFZEOR-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/10—Magnetoresistive devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3254—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the spacer being semiconducting or insulating, e.g. for spin tunnel junction [STJ]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
- G11C11/161—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect details concerning the memory cell structure, e.g. the layers of the ferromagnetic memory cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3268—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn
- H01F10/3272—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn by use of anti-parallel coupled [APC] ferromagnetic layers, e.g. artificial ferrimagnets [AFI], artificial [AAF] or synthetic [SAF] anti-ferromagnets
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Power Engineering (AREA)
- Nanotechnology (AREA)
- Computer Hardware Design (AREA)
- Hall/Mr Elements (AREA)
- Semiconductor Memories (AREA)
- Mram Or Spin Memory Techniques (AREA)
- Magnetic Heads (AREA)
- Thin Magnetic Films (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
Description
Claims (4)
- 복수의 박막 층을 포함하는 자기 소자(10,10´, 50, 50´, 80)로서, 비트 엔드 정자 자기 소거 필드가 0외부 필드 내에서 이중 자기 상태를 얻기 위해 전체 양 결합 구조(positive coupling)를 소거하는, 복수의 박막 층을 포함하는 자기 소자.
- 자기 소자가,고정된 강자성 층(28)으로서, 상기 고정된 강자성층(28)의 자화는 특정 강도의 인가된 자계가 존재할 때 바람직한(preferred) 방향 내에 고정되고, 두께1(t1)을 갖는 강자성 층(28), 두께2(t2)을 갖는 피닝된 강자성 층(24)및 상기 고정된 강자성 층과 상기 피닝된 강자성 층 사이에 위치한 결합 중간층(26)을 포함하는, 제 1 전극(14)과;표면을 지닌 자유 강자성 층(30)을 포함하는 제 2 전극(18)으로서 상기 표면의 자화는 충분히 인가된 자계가 존재할 때 자유롭게 회전하는 제 2 전극(18)과;상기 제 1 전극의 고정된 강자성 층과 상기 제 2 전극의 자유 강자성 층 사이에 위치한 스페이서 층(16)과;상기 제 1 및 제 2 전극과 상기 스페이서 층이 형성되는 기판(12)을 포함하며,상기 고정된 강자성 층의 두께 t1은 상기 피닝된 강자성 층의 두께 t2보다 커서, 그로 인해 상기 고정된 강자성 층과 상기 자유 강자성 층 사이의 양 결합을 소거하는,자기소자.
- 자기 소자가,피닝된 강자성 층(24)를 포함하는 제 1 전극(14)으로서, 상기 피닝된 강자성 층(24)의 자화 모멘트는 특정 강도를 지니는 것을 특징으로 하는 인가된 자계가 존재할 때 그 자기 모멘트가 바람직한 방향으로 피닝되는, 제 1 전극(14)과;충분히 인가된 자계가 존재할 때 그 자화가 자유롭게 회전하는 표면을 지닌 자유 강자성 층(30)을 포함하는 제 2 전극(18)과;상기 제 1 전극의 피닝된 강자성 층과 상기 제 2 전극의 자유 강자성 층 사이에 위치한 스페이서 층(16)과;상기 제 1 및 제 2 전극과 상기 스페이서 층이 형성되는 기판 (12)을 포함하며,오프셋은 자기 소거 필드 내의 피닝된 강자기 층에서 자유 강자기 층까지의 감소를 제공하여 그로 인해 상기 피닝된 강자성 층과 상기 자유 강자성 층 사이의 양 결합을 소거하는,자기 소자.
- 비트 엔드 정자(magneto-static) 자기 소거 필드가 0외부 필드 내에 이중 자기 상태를 얻기 위해 전체 양 결합 구조를 소거하는, 복수의 박막 층을 제공하는 단계를 포함하는 자기 소자 제작 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/464,807 | 1999-12-17 | ||
US09/464,807 US6233172B1 (en) | 1999-12-17 | 1999-12-17 | Magnetic element with dual magnetic states and fabrication method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20010062357A true KR20010062357A (ko) | 2001-07-07 |
KR100748069B1 KR100748069B1 (ko) | 2007-08-09 |
Family
ID=23845310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020000075640A KR100748069B1 (ko) | 1999-12-17 | 2000-12-12 | 이중 자기 상태의 자기 소자와 그 제작법 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6233172B1 (ko) |
EP (1) | EP1109168B1 (ko) |
JP (1) | JP4969725B2 (ko) |
KR (1) | KR100748069B1 (ko) |
CN (2) | CN1591675B (ko) |
DE (1) | DE60013079T2 (ko) |
SG (1) | SG87195A1 (ko) |
Families Citing this family (135)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6172904B1 (en) * | 2000-01-27 | 2001-01-09 | Hewlett-Packard Company | Magnetic memory cell with symmetric switching characteristics |
US6297983B1 (en) * | 2000-02-29 | 2001-10-02 | Hewlett-Packard Company | Reference layer structure in a magnetic storage cell |
DE10113853B4 (de) * | 2000-03-23 | 2009-08-06 | Sharp K.K. | Magnetspeicherelement und Magnetspeicher |
JP4309075B2 (ja) | 2000-07-27 | 2009-08-05 | 株式会社東芝 | 磁気記憶装置 |
US6429497B1 (en) * | 2000-11-18 | 2002-08-06 | Hewlett-Packard Company | Method for improving breakdown voltage in magnetic tunnel junctions |
US6657888B1 (en) | 2001-05-11 | 2003-12-02 | Board Of Regents Of The University Of Nebraska | Application of high spin polarization materials in two terminal non-volatile bistable memory devices |
DE10128964B4 (de) * | 2001-06-15 | 2012-02-09 | Qimonda Ag | Digitale magnetische Speicherzelleneinrichtung |
US6510080B1 (en) * | 2001-08-28 | 2003-01-21 | Micron Technology Inc. | Three terminal magnetic random access memory |
US6485989B1 (en) | 2001-08-30 | 2002-11-26 | Micron Technology, Inc. | MRAM sense layer isolation |
FR2830971B1 (fr) * | 2001-10-12 | 2004-03-12 | Commissariat Energie Atomique | Dispositif magnetoresistif a vanne de spin a performances ameliorees |
US6531723B1 (en) * | 2001-10-16 | 2003-03-11 | Motorola, Inc. | Magnetoresistance random access memory for improved scalability |
JP4011548B2 (ja) * | 2001-11-14 | 2007-11-21 | ノキア コーポレイション | IPv6のモバイルルータサポート |
DE10158795B4 (de) * | 2001-11-30 | 2005-12-22 | Infineon Technologies Ag | Magnetoresistive Speicherzelle mit dynamischer Referenzschicht |
JP4157707B2 (ja) * | 2002-01-16 | 2008-10-01 | 株式会社東芝 | 磁気メモリ |
US6893893B2 (en) * | 2002-03-19 | 2005-05-17 | Applied Materials Inc | Method of preventing short circuits in magnetic film stacks |
US6728132B2 (en) * | 2002-04-03 | 2004-04-27 | Micron Technology, Inc. | Synthetic-ferrimagnet sense-layer for high density MRAM applications |
US6724652B2 (en) | 2002-05-02 | 2004-04-20 | Micron Technology, Inc. | Low remanence flux concentrator for MRAM devices |
US6879512B2 (en) * | 2002-05-24 | 2005-04-12 | International Business Machines Corporation | Nonvolatile memory device utilizing spin-valve-type designs and current pulses |
US6683815B1 (en) | 2002-06-26 | 2004-01-27 | Silicon Magnetic Systems | Magnetic memory cell and method for assigning tunable writing currents |
AU2003246251A1 (en) * | 2002-07-09 | 2004-01-23 | Nec Corporation | Magnetic random access memory |
US7095646B2 (en) * | 2002-07-17 | 2006-08-22 | Freescale Semiconductor, Inc. | Multi-state magnetoresistance random access cell with improved memory storage density |
JP2004128237A (ja) * | 2002-10-03 | 2004-04-22 | Sony Corp | 磁気抵抗効果素子および磁気メモリ装置 |
US6898112B2 (en) * | 2002-12-18 | 2005-05-24 | Freescale Semiconductor, Inc. | Synthetic antiferromagnetic structure for magnetoelectronic devices |
US7002228B2 (en) * | 2003-02-18 | 2006-02-21 | Micron Technology, Inc. | Diffusion barrier for improving the thermal stability of MRAM devices |
US6885073B2 (en) * | 2003-04-02 | 2005-04-26 | Micron Technology, Inc. | Method and apparatus providing MRAM devices with fine tuned offset |
JP4863151B2 (ja) * | 2003-06-23 | 2012-01-25 | 日本電気株式会社 | 磁気ランダム・アクセス・メモリとその製造方法 |
US6956763B2 (en) * | 2003-06-27 | 2005-10-18 | Freescale Semiconductor, Inc. | MRAM element and methods for writing the MRAM element |
US8755222B2 (en) | 2003-08-19 | 2014-06-17 | New York University | Bipolar spin-transfer switching |
US7573737B2 (en) * | 2003-08-19 | 2009-08-11 | New York University | High speed low power magnetic devices based on current induced spin-momentum transfer |
US7911832B2 (en) * | 2003-08-19 | 2011-03-22 | New York University | High speed low power magnetic devices based on current induced spin-momentum transfer |
US6967366B2 (en) * | 2003-08-25 | 2005-11-22 | Freescale Semiconductor, Inc. | Magnetoresistive random access memory with reduced switching field variation |
JP2005129801A (ja) * | 2003-10-24 | 2005-05-19 | Sony Corp | 磁気記憶素子及び磁気メモリ |
JP4631267B2 (ja) * | 2003-10-27 | 2011-02-16 | ソニー株式会社 | 磁気記憶素子及び磁気メモリ |
US7045838B2 (en) * | 2003-10-31 | 2006-05-16 | International Business Machines Corporation | Techniques for coupling in semiconductor devices and magnetic device using these techniques |
US7053429B2 (en) * | 2003-11-06 | 2006-05-30 | Honeywell International Inc. | Bias-adjusted giant magnetoresistive (GMR) devices for magnetic random access memory (MRAM) applications |
KR100988086B1 (ko) * | 2003-11-14 | 2010-10-18 | 삼성전자주식회사 | 자기 모멘트가 낮은 프리 자성막을 구비하는 자기터널접합셀 및 이를 포함하는 자기램 |
US7031183B2 (en) * | 2003-12-08 | 2006-04-18 | Freescale Semiconductor, Inc. | MRAM device integrated with other types of circuitry |
US7072209B2 (en) * | 2003-12-29 | 2006-07-04 | Micron Technology, Inc. | Magnetic memory having synthetic antiferromagnetic pinned layer |
WO2005086170A1 (ja) * | 2004-03-05 | 2005-09-15 | Nec Corporation | トグル型磁気ランダムアクセスメモリ |
US7414881B2 (en) * | 2004-03-31 | 2008-08-19 | Nec Corporation | Magnetization direction control method and application thereof to MRAM |
US7067330B2 (en) * | 2004-07-16 | 2006-06-27 | Headway Technologies, Inc. | Magnetic random access memory array with thin conduction electrical read and write lines |
JP4868198B2 (ja) * | 2004-08-19 | 2012-02-01 | 日本電気株式会社 | 磁性メモリ |
US7129098B2 (en) * | 2004-11-24 | 2006-10-31 | Freescale Semiconductor, Inc. | Reduced power magnetoresistive random access memory elements |
JP5077802B2 (ja) * | 2005-02-16 | 2012-11-21 | 日本電気株式会社 | 積層強磁性構造体、及び、mtj素子 |
JP4877575B2 (ja) * | 2005-05-19 | 2012-02-15 | 日本電気株式会社 | 磁気ランダムアクセスメモリ |
US7301801B2 (en) * | 2005-10-28 | 2007-11-27 | International Business Machines Corporation | Tuned pinned layers for magnetic tunnel junctions with multicomponent free layers |
US20080112214A1 (en) * | 2006-10-30 | 2008-05-15 | Young Sir Chung | Electronic assembly having magnetic tunnel junction voltage sensors and method for forming the same |
JP4380693B2 (ja) * | 2006-12-12 | 2009-12-09 | ソニー株式会社 | 記憶素子、メモリ |
JP4380707B2 (ja) * | 2007-01-19 | 2009-12-09 | ソニー株式会社 | 記憶素子 |
US9812184B2 (en) | 2007-10-31 | 2017-11-07 | New York University | Current induced spin-momentum transfer stack with dual insulating layers |
US7821771B2 (en) * | 2008-04-11 | 2010-10-26 | Northern Lights Semiconductor Corp. | Apparatus for storing electrical energy |
US8705212B2 (en) | 2011-04-25 | 2014-04-22 | Seagate Technology Llc | Magnetic element with enhanced coupling portion |
US8755154B2 (en) | 2011-09-13 | 2014-06-17 | Seagate Technology Llc | Tuned angled uniaxial anisotropy in trilayer magnetic sensors |
US8829901B2 (en) * | 2011-11-04 | 2014-09-09 | Honeywell International Inc. | Method of using a magnetoresistive sensor in second harmonic detection mode for sensing weak magnetic fields |
KR101831725B1 (ko) * | 2011-12-30 | 2018-04-04 | 인텔 코포레이션 | 수직 자기 터널 접합들에서의 상태들 간의 에너지 장벽 균형화 |
US9082888B2 (en) | 2012-10-17 | 2015-07-14 | New York University | Inverted orthogonal spin transfer layer stack |
US9082950B2 (en) | 2012-10-17 | 2015-07-14 | New York University | Increased magnetoresistance in an inverted orthogonal spin transfer layer stack |
US8982613B2 (en) | 2013-06-17 | 2015-03-17 | New York University | Scalable orthogonal spin transfer magnetic random access memory devices with reduced write error rates |
JP6512668B2 (ja) | 2014-07-07 | 2019-05-15 | インテル・コーポレーション | 集積回路、埋め込みメモリデバイス、コンピューティングシステムおよびスピントランスファートルクメモリ(sttm)デバイスを形成する方法 |
US9263667B1 (en) | 2014-07-25 | 2016-02-16 | Spin Transfer Technologies, Inc. | Method for manufacturing MTJ memory device |
US9337412B2 (en) | 2014-09-22 | 2016-05-10 | Spin Transfer Technologies, Inc. | Magnetic tunnel junction structure for MRAM device |
EP3045928B1 (en) * | 2015-01-16 | 2017-07-12 | Crocus Technology | Magnetic logic unit (MLU) cell for sensing magnetic fields with improved programmability and low reading consumption |
US9728712B2 (en) | 2015-04-21 | 2017-08-08 | Spin Transfer Technologies, Inc. | Spin transfer torque structure for MRAM devices having a spin current injection capping layer |
US10468590B2 (en) | 2015-04-21 | 2019-11-05 | Spin Memory, Inc. | High annealing temperature perpendicular magnetic anisotropy structure for magnetic random access memory |
US9853206B2 (en) | 2015-06-16 | 2017-12-26 | Spin Transfer Technologies, Inc. | Precessional spin current structure for MRAM |
US9773974B2 (en) | 2015-07-30 | 2017-09-26 | Spin Transfer Technologies, Inc. | Polishing stop layer(s) for processing arrays of semiconductor elements |
US10163479B2 (en) | 2015-08-14 | 2018-12-25 | Spin Transfer Technologies, Inc. | Method and apparatus for bipolar memory write-verify |
US9741926B1 (en) | 2016-01-28 | 2017-08-22 | Spin Transfer Technologies, Inc. | Memory cell having magnetic tunnel junction and thermal stability enhancement layer |
US10460781B2 (en) | 2016-09-27 | 2019-10-29 | Spin Memory, Inc. | Memory device with a dual Y-multiplexer structure for performing two simultaneous operations on the same row of a memory bank |
US10991410B2 (en) | 2016-09-27 | 2021-04-27 | Spin Memory, Inc. | Bi-polar write scheme |
US10818331B2 (en) | 2016-09-27 | 2020-10-27 | Spin Memory, Inc. | Multi-chip module for MRAM devices with levels of dynamic redundancy registers |
US10446210B2 (en) | 2016-09-27 | 2019-10-15 | Spin Memory, Inc. | Memory instruction pipeline with a pre-read stage for a write operation for reducing power consumption in a memory device that uses dynamic redundancy registers |
US10360964B2 (en) | 2016-09-27 | 2019-07-23 | Spin Memory, Inc. | Method of writing contents in memory during a power up sequence using a dynamic redundancy register in a memory device |
US10437491B2 (en) | 2016-09-27 | 2019-10-08 | Spin Memory, Inc. | Method of processing incomplete memory operations in a memory device during a power up sequence and a power down sequence using a dynamic redundancy register |
US11119936B2 (en) | 2016-09-27 | 2021-09-14 | Spin Memory, Inc. | Error cache system with coarse and fine segments for power optimization |
US10628316B2 (en) | 2016-09-27 | 2020-04-21 | Spin Memory, Inc. | Memory device with a plurality of memory banks where each memory bank is associated with a corresponding memory instruction pipeline and a dynamic redundancy register |
US10546625B2 (en) | 2016-09-27 | 2020-01-28 | Spin Memory, Inc. | Method of optimizing write voltage based on error buffer occupancy |
US10366774B2 (en) | 2016-09-27 | 2019-07-30 | Spin Memory, Inc. | Device with dynamic redundancy registers |
US11119910B2 (en) | 2016-09-27 | 2021-09-14 | Spin Memory, Inc. | Heuristics for selecting subsegments for entry in and entry out operations in an error cache system with coarse and fine grain segments |
US10437723B2 (en) | 2016-09-27 | 2019-10-08 | Spin Memory, Inc. | Method of flushing the contents of a dynamic redundancy register to a secure storage area during a power down in a memory device |
US11151042B2 (en) | 2016-09-27 | 2021-10-19 | Integrated Silicon Solution, (Cayman) Inc. | Error cache segmentation for power reduction |
US10672976B2 (en) | 2017-02-28 | 2020-06-02 | Spin Memory, Inc. | Precessional spin current structure with high in-plane magnetization for MRAM |
US10665777B2 (en) | 2017-02-28 | 2020-05-26 | Spin Memory, Inc. | Precessional spin current structure with non-magnetic insertion layer for MRAM |
US10032978B1 (en) | 2017-06-27 | 2018-07-24 | Spin Transfer Technologies, Inc. | MRAM with reduced stray magnetic fields |
US10656994B2 (en) | 2017-10-24 | 2020-05-19 | Spin Memory, Inc. | Over-voltage write operation of tunnel magnet-resistance (“TMR”) memory device and correcting failure bits therefrom by using on-the-fly bit failure detection and bit redundancy remapping techniques |
US10489245B2 (en) | 2017-10-24 | 2019-11-26 | Spin Memory, Inc. | Forcing stuck bits, waterfall bits, shunt bits and low TMR bits to short during testing and using on-the-fly bit failure detection and bit redundancy remapping techniques to correct them |
US10529439B2 (en) | 2017-10-24 | 2020-01-07 | Spin Memory, Inc. | On-the-fly bit failure detection and bit redundancy remapping techniques to correct for fixed bit defects |
US10481976B2 (en) | 2017-10-24 | 2019-11-19 | Spin Memory, Inc. | Forcing bits as bad to widen the window between the distributions of acceptable high and low resistive bits thereby lowering the margin and increasing the speed of the sense amplifiers |
US10679685B2 (en) | 2017-12-27 | 2020-06-09 | Spin Memory, Inc. | Shared bit line array architecture for magnetoresistive memory |
US10424726B2 (en) | 2017-12-28 | 2019-09-24 | Spin Memory, Inc. | Process for improving photoresist pillar adhesion during MRAM fabrication |
US10891997B2 (en) | 2017-12-28 | 2021-01-12 | Spin Memory, Inc. | Memory array with horizontal source line and a virtual source line |
US10395711B2 (en) | 2017-12-28 | 2019-08-27 | Spin Memory, Inc. | Perpendicular source and bit lines for an MRAM array |
US10516094B2 (en) | 2017-12-28 | 2019-12-24 | Spin Memory, Inc. | Process for creating dense pillars using multiple exposures for MRAM fabrication |
US10360962B1 (en) | 2017-12-28 | 2019-07-23 | Spin Memory, Inc. | Memory array with individually trimmable sense amplifiers |
US10395712B2 (en) | 2017-12-28 | 2019-08-27 | Spin Memory, Inc. | Memory array with horizontal source line and sacrificial bitline per virtual source |
US10811594B2 (en) | 2017-12-28 | 2020-10-20 | Spin Memory, Inc. | Process for hard mask development for MRAM pillar formation using photolithography |
US10199083B1 (en) | 2017-12-29 | 2019-02-05 | Spin Transfer Technologies, Inc. | Three-terminal MRAM with ac write-assist for low read disturb |
US10840439B2 (en) | 2017-12-29 | 2020-11-17 | Spin Memory, Inc. | Magnetic tunnel junction (MTJ) fabrication methods and systems |
US10236048B1 (en) | 2017-12-29 | 2019-03-19 | Spin Memory, Inc. | AC current write-assist in orthogonal STT-MRAM |
US10270027B1 (en) | 2017-12-29 | 2019-04-23 | Spin Memory, Inc. | Self-generating AC current assist in orthogonal STT-MRAM |
US10367139B2 (en) | 2017-12-29 | 2019-07-30 | Spin Memory, Inc. | Methods of manufacturing magnetic tunnel junction devices |
US10236047B1 (en) | 2017-12-29 | 2019-03-19 | Spin Memory, Inc. | Shared oscillator (STNO) for MRAM array write-assist in orthogonal STT-MRAM |
US10546624B2 (en) | 2017-12-29 | 2020-01-28 | Spin Memory, Inc. | Multi-port random access memory |
US10424723B2 (en) | 2017-12-29 | 2019-09-24 | Spin Memory, Inc. | Magnetic tunnel junction devices including an optimization layer |
US10886330B2 (en) | 2017-12-29 | 2021-01-05 | Spin Memory, Inc. | Memory device having overlapping magnetic tunnel junctions in compliance with a reference pitch |
US10360961B1 (en) | 2017-12-29 | 2019-07-23 | Spin Memory, Inc. | AC current pre-charge write-assist in orthogonal STT-MRAM |
US10840436B2 (en) | 2017-12-29 | 2020-11-17 | Spin Memory, Inc. | Perpendicular magnetic anisotropy interface tunnel junction devices and methods of manufacture |
US10784439B2 (en) | 2017-12-29 | 2020-09-22 | Spin Memory, Inc. | Precessional spin current magnetic tunnel junction devices and methods of manufacture |
US10339993B1 (en) | 2017-12-30 | 2019-07-02 | Spin Memory, Inc. | Perpendicular magnetic tunnel junction device with skyrmionic assist layers for free layer switching |
US10229724B1 (en) | 2017-12-30 | 2019-03-12 | Spin Memory, Inc. | Microwave write-assist in series-interconnected orthogonal STT-MRAM devices |
US10141499B1 (en) | 2017-12-30 | 2018-11-27 | Spin Transfer Technologies, Inc. | Perpendicular magnetic tunnel junction device with offset precessional spin current layer |
US10319900B1 (en) | 2017-12-30 | 2019-06-11 | Spin Memory, Inc. | Perpendicular magnetic tunnel junction device with precessional spin current layer having a modulated moment density |
US10255962B1 (en) | 2017-12-30 | 2019-04-09 | Spin Memory, Inc. | Microwave write-assist in orthogonal STT-MRAM |
US10236439B1 (en) | 2017-12-30 | 2019-03-19 | Spin Memory, Inc. | Switching and stability control for perpendicular magnetic tunnel junction device |
US10468588B2 (en) | 2018-01-05 | 2019-11-05 | Spin Memory, Inc. | Perpendicular magnetic tunnel junction device with skyrmionic enhancement layers for the precessional spin current magnetic layer |
US10438995B2 (en) | 2018-01-08 | 2019-10-08 | Spin Memory, Inc. | Devices including magnetic tunnel junctions integrated with selectors |
US10438996B2 (en) | 2018-01-08 | 2019-10-08 | Spin Memory, Inc. | Methods of fabricating magnetic tunnel junctions integrated with selectors |
US10446744B2 (en) | 2018-03-08 | 2019-10-15 | Spin Memory, Inc. | Magnetic tunnel junction wafer adaptor used in magnetic annealing furnace and method of using the same |
US10388861B1 (en) | 2018-03-08 | 2019-08-20 | Spin Memory, Inc. | Magnetic tunnel junction wafer adaptor used in magnetic annealing furnace and method of using the same |
US10784437B2 (en) | 2018-03-23 | 2020-09-22 | Spin Memory, Inc. | Three-dimensional arrays with MTJ devices including a free magnetic trench layer and a planar reference magnetic layer |
US10529915B2 (en) | 2018-03-23 | 2020-01-07 | Spin Memory, Inc. | Bit line structures for three-dimensional arrays with magnetic tunnel junction devices including an annular free magnetic layer and a planar reference magnetic layer |
US11107974B2 (en) | 2018-03-23 | 2021-08-31 | Spin Memory, Inc. | Magnetic tunnel junction devices including a free magnetic trench layer and a planar reference magnetic layer |
US11107978B2 (en) | 2018-03-23 | 2021-08-31 | Spin Memory, Inc. | Methods of manufacturing three-dimensional arrays with MTJ devices including a free magnetic trench layer and a planar reference magnetic layer |
US10411185B1 (en) | 2018-05-30 | 2019-09-10 | Spin Memory, Inc. | Process for creating a high density magnetic tunnel junction array test platform |
US10559338B2 (en) | 2018-07-06 | 2020-02-11 | Spin Memory, Inc. | Multi-bit cell read-out techniques |
US10593396B2 (en) | 2018-07-06 | 2020-03-17 | Spin Memory, Inc. | Multi-bit cell read-out techniques for MRAM cells with mixed pinned magnetization orientations |
US10600478B2 (en) | 2018-07-06 | 2020-03-24 | Spin Memory, Inc. | Multi-bit cell read-out techniques for MRAM cells with mixed pinned magnetization orientations |
US10692569B2 (en) | 2018-07-06 | 2020-06-23 | Spin Memory, Inc. | Read-out techniques for multi-bit cells |
US10650875B2 (en) | 2018-08-21 | 2020-05-12 | Spin Memory, Inc. | System for a wide temperature range nonvolatile memory |
US10699761B2 (en) | 2018-09-18 | 2020-06-30 | Spin Memory, Inc. | Word line decoder memory architecture |
US10971680B2 (en) | 2018-10-01 | 2021-04-06 | Spin Memory, Inc. | Multi terminal device stack formation methods |
US11621293B2 (en) | 2018-10-01 | 2023-04-04 | Integrated Silicon Solution, (Cayman) Inc. | Multi terminal device stack systems and methods |
US10580827B1 (en) | 2018-11-16 | 2020-03-03 | Spin Memory, Inc. | Adjustable stabilizer/polarizer method for MRAM with enhanced stability and efficient switching |
US11107979B2 (en) | 2018-12-28 | 2021-08-31 | Spin Memory, Inc. | Patterned silicide structures and methods of manufacture |
US11500042B2 (en) | 2020-02-28 | 2022-11-15 | Brown University | Magnetic sensing devices based on interlayer exchange-coupled magnetic thin films |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5648885A (en) * | 1995-08-31 | 1997-07-15 | Hitachi, Ltd. | Giant magnetoresistive effect sensor, particularly having a multilayered magnetic thin film layer |
US5668688A (en) * | 1996-05-24 | 1997-09-16 | Quantum Peripherals Colorado, Inc. | Current perpendicular-to-the-plane spin valve type magnetoresistive transducer |
US5801984A (en) * | 1996-11-27 | 1998-09-01 | International Business Machines Corporation | Magnetic tunnel junction device with ferromagnetic multilayer having fixed magnetic moment |
US5898612A (en) * | 1997-05-22 | 1999-04-27 | Motorola, Inc. | Magnetic memory cell with increased GMR ratio |
US5828598A (en) * | 1997-05-23 | 1998-10-27 | Motorola, Inc. | MRAM with high GMR ratio |
US5959880A (en) * | 1997-12-18 | 1999-09-28 | Motorola, Inc. | Low aspect ratio magnetoresistive tunneling junction |
JP3831573B2 (ja) * | 1998-07-21 | 2006-10-11 | アルプス電気株式会社 | スピンバルブ型薄膜素子の製造方法及びこのスピンバルブ型薄膜素子を用いた薄膜磁気ヘッドの製造方法 |
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DE60013079D1 (de) | 2004-09-23 |
CN1591675B (zh) | 2011-11-09 |
EP1109168B1 (en) | 2004-08-18 |
JP4969725B2 (ja) | 2012-07-04 |
JP2001250999A (ja) | 2001-09-14 |
CN1309301A (zh) | 2001-08-22 |
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