JP5247766B2 - 磁気抵抗装置およびその製造方法 - Google Patents
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- 238000000034 method Methods 0.000 claims description 37
- 125000006850 spacer group Chemical group 0.000 claims description 36
- 230000005291 magnetic effect Effects 0.000 claims description 27
- 229910052802 copper Inorganic materials 0.000 claims description 22
- 229910052749 magnesium Inorganic materials 0.000 claims description 22
- 238000000151 deposition Methods 0.000 claims description 17
- 230000003647 oxidation Effects 0.000 claims description 12
- 238000007254 oxidation reaction Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 229910019236 CoFeB Inorganic materials 0.000 claims description 8
- 229910003321 CoFe Inorganic materials 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 5
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
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- 239000000203 mixture Substances 0.000 claims 5
- 229910017818 Cu—Mg Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 178
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 34
- 239000000395 magnesium oxide Substances 0.000 description 34
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 34
- 239000010949 copper Substances 0.000 description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 26
- 239000011777 magnesium Substances 0.000 description 22
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 20
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- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000005751 Copper oxide Substances 0.000 description 6
- 229910000431 copper oxide Inorganic materials 0.000 description 6
- 230000005294 ferromagnetic effect Effects 0.000 description 6
- 230000005415 magnetization Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- 238000001552 radio frequency sputter deposition Methods 0.000 description 4
- 230000005290 antiferromagnetic effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000003302 ferromagnetic material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002885 antiferromagnetic material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229910003289 NiMn Inorganic materials 0.000 description 1
- 229910019041 PtMn Inorganic materials 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- OWXLRKWPEIAGAT-UHFFFAOYSA-N [Mg].[Cu] Chemical compound [Mg].[Cu] OWXLRKWPEIAGAT-UHFFFAOYSA-N 0.000 description 1
- NPTHYUZKKQLDRK-UHFFFAOYSA-N [O--].[O--].[Mg++].[Cu++] Chemical compound [O--].[O--].[Mg++].[Cu++] NPTHYUZKKQLDRK-UHFFFAOYSA-N 0.000 description 1
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- 239000002889 diamagnetic material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001291 heusler alloy Inorganic materials 0.000 description 1
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- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3909—Arrangements using a magnetic tunnel junction
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
- G01R33/098—Magnetoresistive devices comprising tunnel junctions, e.g. tunnel magnetoresistance sensors
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10N50/00—Galvanomagnetic devices
- H10N50/01—Manufacture or treatment
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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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- 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
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B2005/3996—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects large or giant magnetoresistive effects [GMR], e.g. as generated in spin-valve [SV] devices
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/11—Magnetic recording head
- Y10T428/1107—Magnetoresistive
- Y10T428/1114—Magnetoresistive having tunnel junction effect
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/11—Magnetic recording head
- Y10T428/1107—Magnetoresistive
- Y10T428/1121—Multilayer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
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Description
巨大磁気抵抗(Giant magnetoresistive:GMR)装置およびトンネル磁気抵抗(tunneling magnetoresistive:TMR)装置は、高密度データ記憶用途のために開発された。GMR装置およびTMR装置は、両方とも、非磁性スペーサ層を2つの強磁性層間に含んだ多数の層のリーダ積層を特徴としている。典型的に、強磁性層の一方は、固定磁化を有するリファレンスまたはピンド層として働き、フリー層と称される他方の強磁性層は、外部磁場に反応して回転する磁化を有する。GMR装置において、非磁性スペーサ層は、導電性である。TMR装置において、スペーサ層は、トンネル障壁をフリー層とリファレンス層との間に形成する非常に薄い電気絶縁層である。
高い巨大磁気抵抗(GMR)値と中程度に低い抵抗と面積との積(RA)とを有する磁気抵抗装置は、第1の磁性層と、第2の磁性層と、第1の磁性層と第2の磁性層との間に位置する電流狭窄(CCP)スペーサ層とを含む。スペーサ層は、第1の磁性層と第2の磁性層との間に延在する銅電流狭窄を酸化マグネシウムの母材中に含む。
図1は、磁気抵抗積層10のレイヤー図であり、この積層は、面直電流(CPP)電流狭窄(CCP)巨大磁気抵抗(GMR)装置である。磁気抵抗積層10は、シード層12と、反強磁性(antiferromagnetic:AFM)ピニング層14と、強磁性ピンド層16と、結合層18と、リファレンス層20と、電流狭窄型(CCP)スペーサ層22と、第1の強磁性フリー層24と、第2の強磁性フリー層26と、キャップ層28とを含む。
Claims (18)
- 磁気抵抗装置の製造方法であって、
第1の磁性層を形成するステップと、
前記第1の磁性層の上に、約0.5Åから約5Åの厚みのMgシード層を堆積するステップと、
前記Mgシード層の上にCuとMgOとの混合層を形成するステップと、
前記混合層の上に第2の磁性層を堆積するステップと、
Cu電流狭窄をMgO母材中に含むCCP層を形成するために前記混合層を熱処理するステップとを備える、方法。 - 前記第2の磁性層を堆積するステップの前に前記混合層の上にMgシード層を堆積させるステップをさらに備える、請求項1に記載の方法。
- 堆積された前記Mgシード層の厚みは、約0.5Å〜約5Åである、請求項2に記載の方法。
- 前記混合層を形成するステップは、
CuとMgとの混合物を堆積するステップと、
CuとMgOとの混合物を形成するためにMgを酸化させるステップとを含む、請求項1に記載の方法。 - 前記CuとMgとの混合物は、別個のターゲットからまたはCu−Mg混合単一ターゲットからスパッタリング堆積される、請求項4に記載の方法。
- 前記酸化させるステップは、プラズマ酸化、ラジカルシャワー酸化、および自然酸化のうち少なくとも1つによる、請求項4に記載の方法。
- 前記混合層を形成するステップは、CuとMgOとの混合物を堆積するステップを含む、請求項1に記載の方法。
- 前記混合物は、別個のCuターゲットおよびMgOターゲットからまたは混合Cu−MgO単一ターゲットからスパッタリング堆積される、請求項7に記載の方法。
- 前記第1の磁性層を形成するステップは、FeCoB、CoFe、およびCo2MnX
のうち1つ以上を堆積させるステップを含み、式中Xは、Ge、Si、Al、Ga、およびSnからなる群からのものであり、前記第2の磁性層を堆積するステップは、FeCoB、CoFe、およびNiFeのうち1つ以上を堆積するステップを含む、請求項1に記載の方法。 - 形成された前記混合層は、約1原子パーセントから約60原子パーセントのCuを含む、請求項1に記載の方法。
- 形成された前記混合層は、約5原子パーセントから約30原子パーセントのCuを含む、請求項10に記載の方法。
- 形成された前記混合層の厚みは、約0.5Åから約15Åである、請求項1に記載の方法。
- 形成された前記混合層の厚みは、約4Åから約8Åである、請求項12に記載の方法。
- 請求項1〜13のいずれか1項に記載の方法で製造される磁気抵抗装置であって、
CoFeB、CoFe、およびCo2MnXのうち1つ以上を含む第1の磁性層を備え
、式中XはGe、Si、Al、Ga、およびSnからなる群からのものであり、
CoFeB、CoFe、およびNiFeのうち1つ以上を含む第2の磁性層と、
前記第1の磁性層と前記第2の磁性層との間に位置するスペーサ層とをさらに備え、前記スペーサ層は、前記第1および第2の磁性層間に延在するCu電流狭窄をMgOの母材中に含む、磁気抵抗装置。 - 前記スペーサ層は、約1原子パーセントから約60原子パーセントのCuを含む、請求項14に記載の磁気抵抗装置。
- 前記スペーサ層は、約5原子パーセントから約30原子パーセントのCuを含む、請求項14に記載の磁気抵抗装置。
- 前記スペーサ層の厚みは、約0.5Åから約15Åである、請求項14に記載の磁気抵抗装置。
- 前記スペーサ層の厚みは、約4Åから約8Åである、請求項17に記載の磁気抵抗装置。
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US12/491,936 US8551626B2 (en) | 2009-06-25 | 2009-06-25 | CCP-CPP magnetoresistive reader with high GMR value |
US12/491,936 | 2009-06-25 |
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JP2009164182A (ja) * | 2007-12-28 | 2009-07-23 | Hitachi Global Storage Technologies Netherlands Bv | 磁気抵抗効果素子、磁気ヘッド及び磁気記録再生装置 |
JP2013197345A (ja) | 2012-03-21 | 2013-09-30 | Toshiba Corp | 磁気抵抗効果素子及び磁気メモリ |
JP6137744B2 (ja) | 2013-03-14 | 2017-05-31 | 株式会社東芝 | 磁気抵抗素子及び磁気メモリ |
US9236564B2 (en) | 2013-12-11 | 2016-01-12 | Samsung Electronics Co., Ltd. | Method and system for providing an engineered magnetic layer including Heusler layers and an amorphous insertion layer |
JP7066222B2 (ja) * | 2018-04-04 | 2022-05-13 | 国立研究開発法人物質・材料研究機構 | 面直電流巨大磁気抵抗素子、その前駆体、及びその製造方法 |
US12040115B1 (en) * | 2023-02-07 | 2024-07-16 | Tdk Corporation | Magnetoresistance effect element |
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-
2009
- 2009-06-25 US US12/491,936 patent/US8551626B2/en active Active
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2010
- 2010-06-22 MY MYPI2010002975A patent/MY161080A/en unknown
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CN101937968A (zh) | 2011-01-05 |
US8551626B2 (en) | 2013-10-08 |
JP2011009748A (ja) | 2011-01-13 |
US20100330394A1 (en) | 2010-12-30 |
MY161080A (en) | 2017-04-14 |
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