JP4818720B2 - Cpp−gmrデバイスおよびその製造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000010949 copper Substances 0.000 claims description 48
- 229910052707 ruthenium Inorganic materials 0.000 claims description 42
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 41
- 230000005415 magnetization Effects 0.000 claims description 41
- 229910052715 tantalum Inorganic materials 0.000 claims description 39
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 38
- 229910052802 copper Inorganic materials 0.000 claims description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 32
- 230000005294 ferromagnetic effect Effects 0.000 claims description 28
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- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910000531 Co alloy Inorganic materials 0.000 claims description 6
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 claims description 6
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 5
- SHMWNGFNWYELHA-UHFFFAOYSA-N iridium manganese Chemical compound [Mn].[Ir] SHMWNGFNWYELHA-UHFFFAOYSA-N 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 3
- 150000001879 copper Chemical class 0.000 claims 2
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- 230000005290 antiferromagnetic effect Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000001747 exhibiting effect Effects 0.000 description 4
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- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
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- 229910052786 argon Inorganic materials 0.000 description 2
- 239000002772 conduction electron Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
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- 238000001514 detection method Methods 0.000 description 2
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- 230000035945 sensitivity Effects 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910019041 PtMn Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910001362 Ta alloys Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- 239000002885 antiferromagnetic material Substances 0.000 description 1
- 230000005303 antiferromagnetism Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
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Description
最初に、図1を参照して、本発明における第1の実施の形態としてのCPP−GMRヘッドの構成について以下に説明する。本実施の形態のCPP−GMRヘッドは、例えばハードディスク装置などに搭載され、磁気記録媒体(ハードディスク)に記録された磁気情報を磁気抵抗効果を利用して読み出す磁気デバイスとして使用されるものである。
続いて、本発明における第2の実施の形態としてのCPP−GMRヘッドの構成について以下に説明する。
Claims (9)
- 基体上に、2.0nm以上7.0nm以下の厚みを有するタンタル(Ta)層と、1.0nm以上5.0nm以下の厚みを有するルテニウム(Ru)層とを順に積層することによりシード層を形成する工程と、
前記ルテニウム(Ru)層の上に、イリジウムマンガン合金(IrMn)からなるピンニング層を形成する工程と、
前記ピンニング層の上にピンド層を形成する工程と、
前記ピンド層の上に非磁性スペーサ層を形成する工程と、
前記非磁性スペーサ層の上にフリー層を形成する工程と、
前記フリー層の上に、銅(Cu)層と、ルテニウム(Ru)層と、タンタル(Ta)層と、ルテニウム(Ru)層とを順に積層し、3.5nm以上17.0nm以下の厚みをなすようにキャップ層を形成する工程と
を含むことを特徴とするCPP−GMRデバイスの製造方法。 - 基体上に、2.0nm以上7.0nm以下の厚みを有するタンタル(Ta)層と、1.0nm以上5.0nm以下の厚みを有する銅(Cu)層とを順に積層することによりシード層を形成する工程と、
前記銅(Cu)層の上に、イリジウムマンガン合金(IrMn)からなるピンニング層を形成する工程と、
前記ピンニング層の上にピンド層を形成する工程と、
前記ピンド層の上に非磁性スペーサ層を形成する工程と、
前記非磁性スペーサ層の上にフリー層を形成する工程と、
前記フリー層の上に、銅(Cu)層と、ルテニウム(Ru)層と、タンタル(Ta)層と、ルテニウム(Ru)層とを順に積層し、3.5nm以上17.0nm以下の厚みをなすようにキャップ層を形成する工程と
を含むことを特徴とするCPP−GMRデバイスの製造方法。 - 5.0nm以上10.0nm以下の厚みをなすように前記ピンニング層を形成する
ことを特徴とする請求項1または請求項2に記載のCPP−GMRデバイスの製造方法。 - 前記ピンド層を形成する工程では、
前記ピンニング層の上に、鉄含有率が20原子パーセント以上30原子パーセント以下の鉄コバルト合金(FeXCo1-X,0.2≦X≦0.3)を含む第1の強磁性層を2.0nm以上5.0nm以下の厚みとなるように形成する工程と、
前記第1の強磁性層の上に結合層を0.4nm以上1.0nm以下の厚みとなるように形成する工程と、
前記結合層の上に、前記第1の強磁性層における磁化方向と逆平行の磁化方向を有する第2の強磁性層を2.0nm以上5.0nm以下の厚みとなるように形成する工程と
を含むようにする
ことを特徴とする請求項1または請求項2に記載のCPP−GMRデバイスの製造方法。 - 前記ピンド層を形成する工程では、
前記ピンニング層の上に、鉄含有率が10原子パーセントのコバルト鉄合金(Co0.9Fe0.1)からなり0.6nm以上1.0nm以下の厚みをなす第1のコバルト鉄合金層と、鉄含有率が70原子パーセントの鉄コバルト合金(Fe0.7Co0.3)からなり0.6nm以上2.0nm以下の厚みをなす鉄コバルト合金層と、鉄含有率が10原子パーセントのコバルト鉄合金(Co0.9Fe0.1)からなり0.8nm以上2.0nm以下の厚みをなす第2のコバルト鉄合金層とを順に有する第1の強磁性層を、全体として2.0nm以上5.0nm以下の厚みとなるように形成する工程と、
前記第1の強磁性層の上に結合層を0.4nm以上1.0nm以下の厚みとなるように形成する工程と、
前記結合層の上に、前記第1の強磁性層における磁化方向と逆平行の磁化方向を有する第2の強磁性層を2.0nm以上5.0nm以下の厚みとなるように形成する工程と
を含むようにする
ことを特徴とする請求項1または請求項2に記載のCPP−GMRデバイスの製造方法。 - コバルト鉄合金(CoFe)層とニッケル鉄合金(NiFe)層との積層構造をなし、かつ、全体として3.0nm以上7.0nm以下の厚みとなるように前記フリー層を形成する
ことを特徴とする請求項1または請求項2に記載のCPP−GMRデバイスの製造方法。 - 前記基体として下部リード層を用いる
ことを特徴とする請求項1または請求項2に記載のCPP−GMRデバイスの製造方法。 - 基体上に2.0nm以上7.0nm以下の厚みを有するタンタル(Ta)層と1.0nm以上5.0nm以下の厚みを有するルテニウム(Ru)層とが順に積層されてなるシード層と、
前記ルテニウム(Ru)層の上に設けられた、イリジウムマンガン合金(IrMn)からなるピンニング層と、
前記ピンニング層の上に設けられたピンド層と、
前記ピンド層の上に設けられた非磁性スペーサ層と、
前記非磁性スペーサ層の上に設けられたフリー層と、
前記フリー層の上に設けられ、銅(Cu)層とルテニウム(Ru)層とタンタル(Ta)層とルテニウム(Ru)層との積層構造を有すると共に3.5nm以上17.0nm以下の厚みを有するキャップ層と
を含むことを特徴とするCPP−GMRデバイス。 - 基体上に2.0nm以上7.0nm以下の厚みを有するタンタル(Ta)層と、1.0nm以上5.0nm以下の厚みを有する銅(Cu)層とが順に積層されてなるシード層と、
前記銅(Cu)層の上に設けられた、イリジウムマンガン合金(IrMn)からなるピンニング層と、
前記ピンニング層の上に設けられたピンド層と、
前記ピンド層の上に設けられた非磁性スペーサ層と、
前記非磁性スペーサ層の上に設けられたフリー層と、
前記フリー層の上に設けられ、銅(Cu)層とルテニウム(Ru)層とタンタル(Ta)層とルテニウム(Ru)層との積層構造を有すると共に3.5nm以上17.0nm以下の厚みを有するキャップ層と
を含むことを特徴とするCPP−GMRデバイス。
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US11/043,839 US7355823B2 (en) | 2005-01-26 | 2005-01-26 | Ta based bilayer seed for IrMn CPP spin valve |
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US8068315B2 (en) * | 2007-09-26 | 2011-11-29 | Hitachi Global Storage Technologies Netherlands B.V. | Current perpendicular to plane GMR and TMR sensors with improved magnetic properties using Ru/Si seed layers |
US20090161268A1 (en) * | 2007-12-22 | 2009-06-25 | Tsann Lin | Current-perpendicular-to-plane read sensor with amorphous ferromagnetic and polycrystalline nonmagnetic seed layers |
US7961441B2 (en) * | 2008-01-28 | 2011-06-14 | Tdk Corporation | Exchange coupled film including hafnium and amorphous layers usable in a magnetoresistive element in a thin-film magnetic head |
US8611055B1 (en) | 2009-07-31 | 2013-12-17 | Western Digital (Fremont), Llc | Magnetic etch-stop layer for magnetoresistive read heads |
US8493693B1 (en) | 2012-03-30 | 2013-07-23 | Western Digital (Fremont), Llc | Perpendicular magnetic recording transducer with AFM insertion layer |
JP2014103172A (ja) * | 2012-11-16 | 2014-06-05 | Toshiba Corp | 磁性薄膜、その製造方法、磁性薄膜を用いた、高周波発振素子、磁気ヘッド、磁気記録媒体、及び磁気記録再生装置 |
US9361913B1 (en) | 2013-06-03 | 2016-06-07 | Western Digital (Fremont), Llc | Recording read heads with a multi-layer AFM layer methods and apparatuses |
US9165571B2 (en) | 2013-11-11 | 2015-10-20 | Seagate Technology Llc | Magnetic stack coupling buffer layer |
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US5841611A (en) * | 1994-05-02 | 1998-11-24 | Matsushita Electric Industrial Co., Ltd. | Magnetoresistance effect device and magnetoresistance effect type head, memory device, and amplifying device using the same |
US5627704A (en) | 1996-02-12 | 1997-05-06 | Read-Rite Corporation | Thin film giant magnetoresistive CPP transducer with flux guide yoke structure |
US5668688A (en) | 1996-05-24 | 1997-09-16 | Quantum Peripherals Colorado, Inc. | Current perpendicular-to-the-plane spin valve type magnetoresistive transducer |
JP2000173025A (ja) * | 1998-09-30 | 2000-06-23 | Toshiba Corp | 磁気抵抗効果素子、磁気ヘッド、及び磁気ディスク装置 |
JP4177954B2 (ja) * | 2000-06-30 | 2008-11-05 | 株式会社日立グローバルストレージテクノロジーズ | 磁気トンネル接合積層型ヘッド及びその製法 |
US20020051330A1 (en) | 2000-11-01 | 2002-05-02 | Seagate Technology Llc | High resistance CPP transducer in a read/write head |
US6781801B2 (en) | 2001-08-10 | 2004-08-24 | Seagate Technology Llc | Tunneling magnetoresistive sensor with spin polarized current injection |
JP2003124541A (ja) * | 2001-10-12 | 2003-04-25 | Nec Corp | 交換結合膜、磁気抵抗効果素子、磁気ヘッド及び磁気ランダムアクセスメモリ |
US6624985B1 (en) | 2002-01-07 | 2003-09-23 | International Business Machines Corporation | Pinning layer seeds for CPP geometry spin valve sensors |
US7218484B2 (en) * | 2002-09-11 | 2007-05-15 | Kabushiki Kaisha Toshiba | Magnetoresistance effect element, magnetic head, and magnetic reproducing apparatus |
JP4435521B2 (ja) * | 2002-09-11 | 2010-03-17 | 株式会社東芝 | 磁気抵抗効果素子の製造方法 |
JP2004289100A (ja) * | 2003-01-31 | 2004-10-14 | Japan Science & Technology Agency | Cpp型巨大磁気抵抗素子及びそれを用いた磁気部品並びに磁気装置 |
US6998150B2 (en) | 2003-03-12 | 2006-02-14 | Headway Technologies, Inc. | Method of adjusting CoFe free layer magnetostriction |
US7130166B2 (en) * | 2003-07-02 | 2006-10-31 | Hitachi Global Storage Technologies Netherlands B.V. | CPP GMR with improved synthetic free layer |
US7145755B2 (en) * | 2003-09-30 | 2006-12-05 | Hitachi Global Storage Technologies Netherlands B.V. | Spin valve sensor having one of two AP pinned layers made of cobalt |
US7397637B2 (en) * | 2004-08-30 | 2008-07-08 | Hitachi Global Storage Technologies Netherlands B.V. | Sensor with in-stack bias structure providing enhanced magnetostatic stabilization |
-
2005
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