JP4514721B2 - 磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気抵抗効果ヘッド、磁気記録再生装置及び磁気記憶装置 - Google Patents
磁気抵抗効果素子の製造方法、磁気抵抗効果素子、磁気抵抗効果ヘッド、磁気記録再生装置及び磁気記憶装置 Download PDFInfo
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- 230000005291 magnetic effect Effects 0.000 title claims description 47
- 238000004519 manufacturing process Methods 0.000 title claims description 46
- 238000003860 storage Methods 0.000 title description 2
- 239000010410 layer Substances 0.000 claims description 309
- 230000005415 magnetization Effects 0.000 claims description 172
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- 238000000034 method Methods 0.000 claims description 114
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- 238000010884 ion-beam technique Methods 0.000 claims description 24
- 150000004767 nitrides Chemical class 0.000 claims description 14
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 13
- 239000012212 insulator Substances 0.000 claims description 4
- 239000010409 thin film Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 3
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims 1
- 230000008569 process Effects 0.000 description 101
- 239000010408 film Substances 0.000 description 41
- 230000003647 oxidation Effects 0.000 description 37
- 238000007254 oxidation reaction Methods 0.000 description 37
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- 229910052751 metal Inorganic materials 0.000 description 22
- 239000002184 metal Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 18
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- 239000011241 protective layer Substances 0.000 description 15
- 230000005290 antiferromagnetic effect Effects 0.000 description 12
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
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- 238000001914 filtration Methods 0.000 description 8
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- 150000002500 ions Chemical class 0.000 description 6
- 229910052741 iridium Inorganic materials 0.000 description 6
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- 229910052750 molybdenum Inorganic materials 0.000 description 6
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- 229910052703 rhodium Inorganic materials 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
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- 229910017076 Fe Zr Inorganic materials 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
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- 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
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- G11B5/3909—Arrangements using a magnetic tunnel junction
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- B82—NANOTECHNOLOGY
- 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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- 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
- G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- 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
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- 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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- 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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- H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
- H01F41/30—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates for applying nanostructures, e.g. by molecular beam epitaxy [MBE]
- H01F41/302—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates for applying nanostructures, e.g. by molecular beam epitaxy [MBE] for applying spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F41/303—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates for applying nanostructures, e.g. by molecular beam epitaxy [MBE] for applying spin-exchange-coupled multilayers, e.g. nanostructured superlattices with exchange coupling adjustment of magnetic film pairs, e.g. interface modifications by reduction, oxidation
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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
- 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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- 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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
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- H—ELECTRICITY
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- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
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- 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]
- H01F10/3259—Spin-exchange-coupled multilayers comprising at least a nanooxide layer [NOL], e.g. with a NOL spacer
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- H01F41/32—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying conductive, insulating or magnetic material on a magnetic film, specially adapted for a thin magnetic film
- H01F41/325—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying conductive, insulating or magnetic material on a magnetic film, specially adapted for a thin magnetic film applying a noble metal capping on a spin-exchange-coupled multilayer, e.g. spin filter deposition
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Description
Phys. Rev., B45, 806 (1992), J. Appl. Phys., 69, 4774 (1981)
層と、非磁性中間層と、磁化自由層とが順次積層された磁気抵抗効果素子の製造方法にお
いて、前記磁化固着層または前記磁化自由層となる磁性層の少なくとも一部を形成後、前
記磁性層上に酸化物、窒化物、またはフッ化物を含む機能層を形成した後、イオンビーム
照射を行うことで、この機能層を膜厚均一な層のまま薄膜化することを特徴とする。
、磁化自由層とが順次積層された磁気抵抗効果素子の製造方法において、前記磁化固着層
または前記磁化自由層となる磁性層の少なくとも一部を形成後、前記磁性層上に酸化物、
窒化物、またはフッ化物を含む機能層を形成した後、プラズマ照射を行うことで、この機
能層を膜厚均一な層のまま薄膜化することを特徴とする。
層と、磁化自由層とが順次積層された磁気抵抗効果素子の製造方法において、前記磁化固
着層となる磁性層の少なくとも一部を形成後、前記磁性層上に酸化物、窒化物、またはフ
ッ化物から成る前記非磁性絶縁中間層を形成した後、イオンビーム照射を行うことでこの
非磁性絶縁中間層を膜厚均一な層のまま薄膜化することを特徴とする。
層と、磁化自由層とが順次積層された磁気抵抗効果素子の製造方法において、前記磁化固
着層となる磁性層の少なくとも一部を形成した後、前記磁性層上に酸化物、窒化物、また
はフッ化物から成る前記非磁性絶縁中間層を形成後、プラズマ照射を行うことでこの非磁
性絶縁中間層を膜厚均一な層のまま薄膜化することを特徴とする。
図4に、図1に示される実施例1の変形例として磁化固着層が3層構造(シンセティック構造)ではなく、単層である磁気抵抗効果素子を示す。
図5に、図1に示される実施例1の変形例としてスペーサ層を介して実施例1と磁化固着層、磁化自由層の位置が実施例1と逆になっている磁気抵抗効果素子を示す。
なお、本発明は上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合わせにより、種々の発明を形成できる。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。さらに、異なる実施形態にわたる構成要素を適宜組み合わせてもよい。
2、2´、2´´、102、202、302 … 下地層
3、3´、3´´、103、203、303 … 反強磁性層
4、4´、4´´、14、14´、104、204、304 … 磁化固着層
5、5´、5´´、15、15´、105、305 … スペーサ層
6、6´、6´´、16、16´、106、206、306 … 磁化自由層
7、7´、107、207、307 … 第1保護層
8、8´、8´´、108、208、308 … 第2保護層
9、9´、9´´、109、209、309 … 第2電極
17、17´ … センス電流
Claims (13)
- 磁化固着層と、非磁性中間層と、磁化自由層とが順次積層された磁気抵抗効果素子の製
造方法において、前記磁化固着層または前記磁化自由層となる磁性層の少なくとも一部を
形成後、前記磁性層上に酸化物、窒化物、またはフッ化物を含む機能層を形成した後、イ
オンビーム照射を行うことで、この機能層を膜厚均一な層のまま薄膜化することを特徴と
する磁気抵抗効果素子の製造方法。 - 前記イオンビーム照射は、イオンビームの電圧を110V以下として行われることを特
徴とする請求項1記載の磁気抵抗効果素子の製造方法。 - 磁化固着層と、非磁性中間層と、磁化自由層とが順次積層された磁気抵抗効果素子の製
造方法において、前記磁化固着層または前記磁化自由層となる磁性層の少なくとも一部を
形成後、前記磁性層上に酸化物、窒化物、またはフッ化物を含む機能層を形成した後、プ
ラズマ照射を行うことで、この機能層を膜厚均一な層のまま薄膜化することを特徴とする
磁気抵抗効果素子の製造方法。 - 前記プラズマ照射は、プラズマ出力を15W以上30W以下として行われることを特徴
とする請求項3記載の磁気抵抗効果素子の製造方法。 - 前記非磁性中間層は導電体からなることを特徴とする請求項1ないし4のいずれかに記
載の磁気抵抗効果素子の製造方法。 - 前記非磁性中間層は絶縁体と導電体とから構成され、前記導電体は前記非磁性中間層を
貫通していることを特徴とする請求項1ないし4のいずれかに記載の磁気抵抗効果素子の
製造方法。 - 前記非磁性中間層は絶縁体からなることを特徴とする請求項1ないし4のいずれかに記
載の磁気抵抗効果素子の製造方法。 - 磁化固着層と、非磁性絶縁中間層と、磁化自由層とが順次積層された磁気抵抗効果素子
の製造方法において、前記磁化固着層となる磁性層の少なくとも一部を形成後、前記磁性
層上に酸化物、窒化物、またはフッ化物から成る前記非磁性絶縁中間層を形成した後、イ
オンビーム照射を行うことでこの非磁性絶縁中間層を膜厚均一な層のまま薄膜化すること
を特徴とする磁気抵抗効果素子の製造方法。 - 磁化固着層と、非磁性絶縁中間層と、磁化自由層とが順次積層された磁気抵抗効果素子
の製造方法において、前記磁化固着層となる磁性層の少なくとも一部を形成後、前記磁性
層上に酸化物、窒化物、またはフッ化物から成る前記非磁性絶縁中間層を形成した後、プ
ラズマ照射を行うことでこの非磁性絶縁中間層を膜厚均一な層のまま薄膜化することを特
徴とする磁気抵抗効果素子の製造方法。 - 請求項1ないし9のいずれかに記載の磁気抵抗効果素子の製造方法により形成されるこ
とを特徴とする磁気抵抗効果素子。 - 請求項10に記載の磁気抵抗効果素子を具備することを特徴とする磁気抵抗効果ヘッド
。 - 請求項11に記載の磁気抵抗効果ヘッドを具備することを特徴とする磁気記録再生装置
。 - 請求項10に記載の磁気抵抗効果素子を具備することを特徴とする磁気記憶装置。
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US11/703,830 US7897201B2 (en) | 2006-02-09 | 2007-02-08 | Method for manufacturing magnetoresistance effect element |
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US20070202249A1 (en) | 2007-08-30 |
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KR100912154B1 (ko) | 2009-08-14 |
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