KR100558883B1 - 반강자성으로 안정화된 메모리 응용을 위한 슈도 스핀 밸브 - Google Patents
반강자성으로 안정화된 메모리 응용을 위한 슈도 스핀 밸브 Download PDFInfo
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- KR100558883B1 KR100558883B1 KR1020047011544A KR20047011544A KR100558883B1 KR 100558883 B1 KR100558883 B1 KR 100558883B1 KR 1020047011544 A KR1020047011544 A KR 1020047011544A KR 20047011544 A KR20047011544 A KR 20047011544A KR 100558883 B1 KR100558883 B1 KR 100558883B1
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- 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
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- 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
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- 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
- G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
- G11C11/15—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements using multiple magnetic layers
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- 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
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- 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
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- 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
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- 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
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- 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
-
- 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
- H01F10/3281—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 only by use of asymmetry of the magnetic film pair itself, i.e. so-called pseudospin valve [PSV] structure, e.g. NiFe/Cu/Co
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B61/00—Magnetic memory devices, e.g. magnetoresistive RAM [MRAM] devices
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- 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
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Nanotechnology (AREA)
- Hall/Mr Elements (AREA)
- Semiconductor Memories (AREA)
- Mram Or Spin Memory Techniques (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Taps Or Cocks (AREA)
- Sliding Valves (AREA)
Abstract
Description
Claims (17)
- 강자성 재료의 경질층과,강자성 재료의 연질층과,상기 경질층과 상기 연질층 사이에 위치하는 비-강자성 재료의 스페이서 층과,상기 연질층에 인접하여 위치하되, 상기 경질층에 대해 대향하고 있는 상기 연질층측 상에 위치하는 반강자성 층을 포함하는, 엠램에서 반강자성으로 안정화된 슈도 스핀 밸브.
- 제 1 항에 있어서,상기 반강자성 층은 적어도 하나의 망간 합금을 포함하는 슈도 스핀 밸브.
- 제 1 항에 있어서,상기 반강자성 층은 철-망간(FeMn)을 포함하는 슈도 스핀 밸브.
- 제 1 항에 있어서,상기 반강자성 층의 두께는 약 10Å 내지 70Å인 슈도 스핀 밸브.
- 제 1 항에 있어서,상기 경질층 및 상기 연질층에서 사용된 강자성 재료는 동일하고, 상기 연질층의 두께는 상기 경질층 두께의 약 20% 내지 80%인 슈도 스핀 밸브.
- 자화방향으로 데이터를 저장하도록 되어 있는 강자성 재료의 경질층과,상기 경질층으로부터 데이터가 판독되는 것을 허용하기 위해 자화방향을 스위칭하도록 되어 있는 강자성 재료의 연질층과,상기 경질층과 상기 연질층 사이에 위치하는 비-강자성 재료의 스페이서층과,상기 경질층에 대해 대향하고 있는 상기 연질층측 상에 위치하는 반강자성층과,상기 연질층과 상기 반강자성층 사이에 위치하고 반강자성 재료로 형성되지 않는 AFM 층간층을 포함하는, 엠램에서 반강자성으로 안정화된 슈도 스핀 밸브.
- 제 6 항에 있어서,상기 AFM 층간층의 두께는 약 1Å 내지 5Å인 슈도 스핀 밸브.
- 제 6 항에 있어서,상기 AFM 층간층은 두께에 있어서 대략 단층(單層)인 슈도 스핀 밸브.
- 제 6 항에 있어서,상기 AFM 층간층은 두께에 있어서 단층(單層) 보다 얇은 슈도 스핀 밸브.
- 제 6 항에 있어서,상기 반강자성 층은 망간 합금을 포함하는 슈도 스핀 밸브.
- 제 6 항에 있어서,상기 반강자성 층은 산화 니켈(NiO) 및 산화 니켈 코발트(NiCoO) 중 적어도 하나를 포함하는 슈도 스핀 밸브.
- 제 6 항에 있어서,상기 AFM 층간층은 이리듐(Ir)을 포함하는 슈도 스핀 밸브.
- 제 6 항에 있어서,상기 AFM 층간층은 구리(Cu), 루테늄(Ru), 크롬(Cr) 및 알루미늄(Al) 중 적어도 하나를 포함하는 슈도 스핀 밸브.
- 연질층과 경질층을 포함하는 자기저항의 샌드위치구조를 제공하는 단계와,상기 자기저항의 샌드위치구조 상에 반강자성층을 형성하되, 상기 연질층의 근처에서 그리고 상기 경질층에 대해 대향하고 있는 상기 연질층측 상에 반강자성층을 형성하는 단계를 포함하는 슈도 스핀 밸브를 안정화시키는 방법.
- 제 14 항에 있어서,상기 연질층에 인접하여 상기 반강자성층을 형성하는 단계를 더 포함하는 슈도 스핀 밸브를 안정화시키는 방법.
- 제 14 항에 있어서,상기 반강자성층과 상기 연질층 사이에 AFM 층간층을 형성하는 단계를 더 포함하는 슈도 스핀 밸브를 안정화시키는 방법.
- 제 16 항에 있어서,상기 반강자성 층은 망간 합금을 포함하고, 상기 AFM 층간층은 이리듐을 포함하는 것을 특징으로 하는 슈도 스핀 밸브를 안정화시키는 방법.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US35462302P | 2002-02-06 | 2002-02-06 | |
US60/354,623 | 2002-02-06 | ||
US10/193,458 | 2002-07-10 | ||
US10/193,458 US6707084B2 (en) | 2002-02-06 | 2002-07-10 | Antiferromagnetically stabilized pseudo spin valve for memory applications |
PCT/US2003/003298 WO2003067600A2 (en) | 2002-02-06 | 2003-02-04 | Antiferromagnetically stabilized pseudo spin valve for memory applications |
Publications (2)
Publication Number | Publication Date |
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KR20040077804A KR20040077804A (ko) | 2004-09-06 |
KR100558883B1 true KR100558883B1 (ko) | 2006-03-10 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020047011544A KR100558883B1 (ko) | 2002-02-06 | 2003-02-04 | 반강자성으로 안정화된 메모리 응용을 위한 슈도 스핀 밸브 |
Country Status (9)
Country | Link |
---|---|
US (4) | US6707084B2 (ko) |
EP (1) | EP1474806B1 (ko) |
JP (1) | JP2005517294A (ko) |
KR (1) | KR100558883B1 (ko) |
AT (1) | ATE315825T1 (ko) |
AU (1) | AU2003212917A1 (ko) |
DE (1) | DE60303194T2 (ko) |
TW (1) | TW578311B (ko) |
WO (1) | WO2003067600A2 (ko) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6707084B2 (en) * | 2002-02-06 | 2004-03-16 | Micron Technology, Inc. | Antiferromagnetically stabilized pseudo spin valve for memory applications |
US6724652B2 (en) * | 2002-05-02 | 2004-04-20 | Micron Technology, Inc. | Low remanence flux concentrator for MRAM devices |
US6806523B2 (en) * | 2002-07-15 | 2004-10-19 | Micron Technology, Inc. | Magnetoresistive memory devices |
US20040012802A1 (en) * | 2002-07-17 | 2004-01-22 | Allen Kram H. | System and method for printing a data file |
JP2004071881A (ja) * | 2002-08-07 | 2004-03-04 | Toshiba Corp | 半導体集積回路装置及びその製造方法 |
US6881993B2 (en) * | 2002-08-28 | 2005-04-19 | Micron Technology, Inc. | Device having reduced diffusion through ferromagnetic materials |
JP4146202B2 (ja) * | 2002-09-24 | 2008-09-10 | 株式会社東芝 | スピントンネルトランジスタ、磁気再生ヘッド、磁気情報再生システム、及び磁気記憶装置 |
US7183120B2 (en) | 2002-10-31 | 2007-02-27 | Honeywell International Inc. | Etch-stop material for improved manufacture of magnetic devices |
US7002228B2 (en) | 2003-02-18 | 2006-02-21 | Micron Technology, Inc. | Diffusion barrier for improving the thermal stability of MRAM devices |
JP2005079487A (ja) * | 2003-09-03 | 2005-03-24 | Fujitsu Ltd | 磁気抵抗効果膜並びにこれを用いた磁気抵抗効果ヘッドおよび固体メモリ |
US6984529B2 (en) * | 2003-09-10 | 2006-01-10 | Infineon Technologies Ag | Fabrication process for a magnetic tunnel junction device |
US7083988B2 (en) * | 2004-01-26 | 2006-08-01 | Micron Technology, Inc. | Magnetic annealing sequences for patterned MRAM synthetic antiferromagnetic pinned layers |
US7149105B2 (en) * | 2004-02-24 | 2006-12-12 | Infineon Technologies Ag | Magnetic tunnel junctions for MRAM devices |
US7102920B2 (en) * | 2004-03-23 | 2006-09-05 | Hewlett-Packard Development Company, L.P. | Soft-reference three conductor magnetic memory storage device |
US7045368B2 (en) * | 2004-05-19 | 2006-05-16 | Headway Technologies, Inc. | MRAM cell structure and method of fabrication |
US20070279971A1 (en) * | 2004-06-04 | 2007-12-06 | Micron Technology, Inc. | Modified pseudo-spin valve (psv) for memory applications |
US7251110B2 (en) * | 2005-01-18 | 2007-07-31 | Hitachi Global Storage Technologies Netherlands B.V. | GMR sensor having layers treated with nitrogen for increased magnetoresistance |
US7777215B2 (en) * | 2007-07-20 | 2010-08-17 | Macronix International Co., Ltd. | Resistive memory structure with buffer layer |
FR2930385B1 (fr) * | 2008-04-16 | 2011-10-14 | Commissariat Energie Atomique | Disositif magnetique pour la realisation d'une "fonction logique". |
US8743511B2 (en) | 2011-08-31 | 2014-06-03 | HGST Netherlands B.V. | CPP-GMR sensor with corrosion resistent spacer layer and higher signal/noise ratio |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US5477482A (en) * | 1993-10-01 | 1995-12-19 | The United States Of America As Represented By The Secretary Of The Navy | Ultra high density, non-volatile ferromagnetic random access memory |
DE69511145T2 (de) * | 1994-03-09 | 2000-02-03 | Eastman Kodak Co | Magnetoresistiver Wiedergabekopf mit doppeltem Spin-Ventilelement |
US5541868A (en) | 1995-02-21 | 1996-07-30 | The United States Of America As Represented By The Secretary Of The Navy | Annular GMR-based memory element |
US6590750B2 (en) * | 1996-03-18 | 2003-07-08 | International Business Machines Corporation | Limiting magnetoresistive electrical interaction to a preferred portion of a magnetic region in magnetic devices |
US6215695B1 (en) | 1998-12-08 | 2001-04-10 | Canon Kabushiki Kaisha | Magnetoresistance element and magnetic memory device employing the same |
US6134138A (en) * | 1999-07-30 | 2000-10-17 | Honeywell Inc. | Method and apparatus for reading a magnetoresistive memory |
US6326637B1 (en) * | 1999-10-18 | 2001-12-04 | International Business Machines Corporation | Antiferromagnetically exchange-coupled structure for magnetic tunnel junction device |
US20010030839A1 (en) * | 2000-01-13 | 2001-10-18 | Lieping Zhong | Dual spin-valve magnetoresistive sensor |
US6731473B2 (en) * | 2000-04-12 | 2004-05-04 | Seagate Technology Llc | Dual pseudo spin valve heads |
US6744086B2 (en) * | 2001-05-15 | 2004-06-01 | Nve Corporation | Current switched magnetoresistive memory cell |
US6650562B2 (en) * | 2002-01-23 | 2003-11-18 | Hewlett-Packard Development Company, L.P. | System and method for determining the logic state of a memory cell in a magnetic tunnel junction memory device |
US6707084B2 (en) * | 2002-02-06 | 2004-03-16 | Micron Technology, Inc. | Antiferromagnetically stabilized pseudo spin valve for memory applications |
-
2002
- 2002-07-10 US US10/193,458 patent/US6707084B2/en not_active Expired - Lifetime
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2003
- 2003-01-30 TW TW092102229A patent/TW578311B/zh not_active IP Right Cessation
- 2003-02-04 DE DE60303194T patent/DE60303194T2/de not_active Expired - Lifetime
- 2003-02-04 AU AU2003212917A patent/AU2003212917A1/en not_active Abandoned
- 2003-02-04 KR KR1020047011544A patent/KR100558883B1/ko active IP Right Grant
- 2003-02-04 WO PCT/US2003/003298 patent/WO2003067600A2/en active IP Right Grant
- 2003-02-04 EP EP03708960A patent/EP1474806B1/en not_active Expired - Lifetime
- 2003-02-04 JP JP2003566859A patent/JP2005517294A/ja active Pending
- 2003-02-04 AT AT03708960T patent/ATE315825T1/de not_active IP Right Cessation
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2004
- 2004-01-16 US US10/760,127 patent/US6903399B2/en not_active Expired - Lifetime
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2005
- 2005-04-11 US US11/103,347 patent/US7161201B2/en not_active Expired - Lifetime
- 2005-06-07 US US11/146,431 patent/US7170123B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU2003212917A8 (en) | 2003-09-02 |
KR20040077804A (ko) | 2004-09-06 |
ATE315825T1 (de) | 2006-02-15 |
EP1474806A2 (en) | 2004-11-10 |
EP1474806B1 (en) | 2006-01-11 |
US6707084B2 (en) | 2004-03-16 |
US20050237790A1 (en) | 2005-10-27 |
US20060018150A1 (en) | 2006-01-26 |
DE60303194T2 (de) | 2006-08-31 |
AU2003212917A1 (en) | 2003-09-02 |
US6903399B2 (en) | 2005-06-07 |
WO2003067600A3 (en) | 2003-11-13 |
US20040183099A1 (en) | 2004-09-23 |
TW578311B (en) | 2004-03-01 |
DE60303194D1 (de) | 2006-04-06 |
US7170123B2 (en) | 2007-01-30 |
WO2003067600A2 (en) | 2003-08-14 |
US7161201B2 (en) | 2007-01-09 |
TW200303095A (en) | 2003-08-16 |
JP2005517294A (ja) | 2005-06-09 |
US20030146459A1 (en) | 2003-08-07 |
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