JP4244988B2 - 磁気抵抗効果素子、該素子を備えた薄膜磁気ヘッド及びその製造方法 - Google Patents
磁気抵抗効果素子、該素子を備えた薄膜磁気ヘッド及びその製造方法 Download PDFInfo
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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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- 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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- 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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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T29/49—Method of mechanical manufacture
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- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49043—Depositing magnetic layer or coating
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49043—Depositing magnetic layer or coating
- Y10T29/49046—Depositing magnetic layer or coating with etching or machining of magnetic material
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
- Y10T29/49052—Machining magnetic material [e.g., grinding, etching, polishing] by etching
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- Crystallography & Structural Chemistry (AREA)
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- Magnetic Heads (AREA)
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Description
この本発明による薄膜磁気ヘッドウエハの製造方法においては、磁化自由層の上面の後端から窪みの凹面までの前後方向における絶縁層の厚さDIが、
3≦DI≦50(但し、DIの単位はnmである)
の関係を満たすように、絶縁層を形成することが好ましい。また、MR効果積層体として、垂直通電型巨大磁気抵抗(CPP−GMR)効果積層体又はトンネル磁気抵抗(TMR)効果積層体を形成することも好ましい。
11 スピンドルモータ
12 アセンブリキャリッジ装置
13 記録再生回路
14 駆動アーム
15 ボイスコイルモータ(VCM)
16 ピボットベアリング軸
17 ヘッドジンバルアセンブリ(HGA)
20 サスペンション
21 スライダ
210 スライダ基板
22 ロードビーム
23 フレクシャ
24 ベースプレート
25 配線部材
30 浮上面(ABS)
300 ヘッド端面
31 素子形成面
32 磁気ヘッド素子
33 MR効果素子
330、1500 下部電極層
332、1503 MR効果積層体
333、333′、333″、80、1200、1203、1501 絶縁層
333a、1200a、1203a 窪み
334、1502 上部電極層
34 電磁コイル素子
340 下部磁極層
340a、340a′345a、3450a′ 端部
3400′ 主磁極主要層
3401′ 主磁極補助層
341、341′ ギャップ層
343、343′ コイル層
344、344′ コイル絶縁層
345 上部磁極層
3450 上部磁極
3451 バックコンタクト磁極
3452 ヨーク層
345′ 補助磁極層
3450′ トレーリングシールド部
35、36 信号端子電極
40、75 絶縁層
41 非磁性層
44 素子間シールド層
42 被覆層
46 バッキングコイル部
460 バッキングコイル層
461 バッキングコイル絶縁層
50 下部金属層
51 下地層
52 反強磁性層
53 磁化固定層
53a 第1の強磁性膜
53b 非磁性膜
53c 第2の強磁性膜
54 トンネルバリア層
55、1201,1204、1504 磁化自由層
55a 高分極率膜
55b 軟磁性膜
56 上部金属層
70、71、72、74、78 平坦化層
73 バックギャップ部
760 上部磁極−ヨーク接合部
761 バックコンタクト磁極−ヨーク接合部
762 コイル引き出し部
77 コイルリード層
81 硬磁性層
82 フォトレジストパターン
83 ウエハ
84 中心線
85 ターゲット面
86 法線
87 MRハイト端
88 ABS側のヘッド端面
1202 底面
Claims (7)
- 磁気シールドとしての役割をも果たす下部電極層上に、非磁性中間層と該非磁性中間層を挟むように形成された磁化固定層及び磁化自由層とを有する磁気抵抗効果積層体を、レジストパターンをマスクとしてエッチングを行うことによって形成し、
前記レジストパターンを残留させた状態で、ウエハの素子形成面の法線をスパッタリング用のターゲット面の法線から所定の角度だけ傾けて、該素子形成面の法線方向の軸の回りで該ウエハを自転させながら、前記下部電極層上及び前記磁気抵抗効果積層体の側面上に、該側面上における膜面が該素子形成面に対して傾斜した絶縁膜をスパッタリング法によって成膜し、
前記絶縁膜の傾斜した膜面におけるエッチングレートが該絶縁膜の他の膜面におけるエッチングレートよりも大きくなるイオンビームエッチング法を含む処理によって該絶縁膜をエッチングすることによって、前記磁気抵抗効果積層体の側面の近傍に位置した、自身の凹面内の最低点が前記磁化自由層の上面と同等の高さ又は該上面よりも下方となる窪みを有する絶縁層であって、底面から該窪みの凹面内の最低点までの厚さDBが18nm以上である絶縁層を形成し、
前記窪み上を含む前記絶縁層上及び前記磁気抵抗効果積層体上に、磁気シールドとしての役割をも果たす上部電極層を形成する
ことを特徴とする薄膜磁気ヘッドウエハの製造方法。 - 前記所定の角度が、20度以上であって60度以下であることを特徴とする請求項1に記載の製造方法。
- 前記磁化自由層の上面の後端から前記窪みの凹面までの前後方向における前記絶縁層の厚さDIが、
3≦DI≦50(但し、DIの単位はnmである)
の関係を満たすように、該絶縁層を形成することを特徴とする請求項1又は2に記載の製造方法。 - 前記磁気抵抗効果積層体として、垂直通電型巨大磁気抵抗効果積層体又はトンネル磁気抵抗効果積層体を形成することを特徴とする請求項1から3のいずれか1項に記載の製造方法。
- 磁気シールドとしての役割をも果たす下部電極層上に、非磁性中間層と該非磁性中間層を挟むように形成された磁化固定層及び磁化自由層とを有する磁気抵抗効果積層体を、レジストパターンをマスクとしてエッチングを行うことによって形成し、
前記下部電極層上及び前記磁気抵抗効果積層体の側面上に、該側面上における膜面が該素子形成面に対して傾斜した絶縁膜を化学気相成長法によって成膜し、
前記絶縁膜の傾斜した膜面におけるエッチングレートが該絶縁膜の他の膜面におけるエッチングレートよりも大きくなるイオンビームエッチング法を含む処理によって該絶縁膜をエッチングすることによって、前記磁気抵抗効果積層体の側面の近傍に位置した、自身の凹面内の最低点が前記磁化自由層の上面と同等の高さ又は該上面よりも下方となる窪みを有する絶縁層であって、底面から該窪みの凹面内の最低点までの厚さDBが18nm以上である絶縁層を形成し、
前記窪み上を含む前記絶縁層上及び前記磁気抵抗効果積層体上に、磁気シールドとしての役割をも果たす上部電極層を形成する
ことを特徴とする薄膜磁気ヘッドウエハの製造方法。 - 前記絶縁膜が、Al2O3又はSiO2であることを特徴とする請求項1から5のいずれか1項に記載の製造方法。
- 請求項1から6のいずれか1項に記載の方法によって製造された薄膜磁気ヘッドウエハを、複数の薄膜磁気ヘッドが列状に並ぶ複数のバーに分離し、該複数のバーの各々を研磨することによってハイト加工を施し、該ハイト加工が施された該複数のバーの各々を個々の薄膜磁気ヘッドに分離することを特徴とする薄膜磁気ヘッドの製造方法。
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JP2005349359A JP4244988B2 (ja) | 2005-12-02 | 2005-12-02 | 磁気抵抗効果素子、該素子を備えた薄膜磁気ヘッド及びその製造方法 |
US11/563,086 US7779535B2 (en) | 2005-12-02 | 2006-11-24 | Method of manufacturing a thin-film magnetic head with a magnetoresistive effect element |
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JP2005349359A JP4244988B2 (ja) | 2005-12-02 | 2005-12-02 | 磁気抵抗効果素子、該素子を備えた薄膜磁気ヘッド及びその製造方法 |
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US7911744B2 (en) | 2007-06-26 | 2011-03-22 | Tdk Corporation | Magneto-resistive effect device and magnetic disk system with refilled insulation layer in contact with a read end face of a cap layer |
JP2010103224A (ja) * | 2008-10-22 | 2010-05-06 | Toshiba Corp | 磁気抵抗素子、及び磁気メモリ |
US8240024B2 (en) * | 2009-08-25 | 2012-08-14 | International Business Machines Corporation | Methods for fabricating magnetic transducers using post-deposition tilting |
US8351152B2 (en) * | 2009-08-25 | 2013-01-08 | International Business Machines Corporation | Magnetic writer structures formed using post-deposition tilting |
US8416537B2 (en) * | 2009-11-06 | 2013-04-09 | International Business Machines Corporation | Recording head with tilted orientation |
US8422177B2 (en) | 2010-04-30 | 2013-04-16 | Seagate Technology Llc | Reader shield with tilted magnetization |
US8902548B2 (en) | 2010-04-30 | 2014-12-02 | Seagate Technology Llc | Head with high readback resolution |
US8432645B2 (en) | 2011-01-31 | 2013-04-30 | Tdk Corporation | Magneto-resistive effect element, magnetic head, magnetic head slider, head gimbal assembly and hard disk drive apparatus |
JP2012173206A (ja) | 2011-02-23 | 2012-09-10 | Yamanashi Nippon Denki Kk | 磁気センサ及びその製造方法 |
CN105762275A (zh) * | 2016-03-14 | 2016-07-13 | 唐山市盛泰建筑安装有限公司 | 多铁/压电复合结构及其存储器件、制备方法 |
JP6823392B2 (ja) | 2016-07-05 | 2021-02-03 | 東京エレクトロン株式会社 | 絶縁膜を形成する方法 |
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JPH05275769A (ja) | 1992-03-25 | 1993-10-22 | Hitachi Maxell Ltd | 磁界センサ |
JP2000020937A (ja) * | 1998-07-03 | 2000-01-21 | Hitachi Ltd | 磁気記録媒体およびこれを用いた磁気記憶装置 |
JP2000182223A (ja) * | 1998-10-08 | 2000-06-30 | Alps Electric Co Ltd | 薄膜磁気ヘッド及びその製造方法 |
JP2001006130A (ja) | 1999-06-24 | 2001-01-12 | Tdk Corp | トンネル磁気抵抗効果型ヘッド |
US6783635B2 (en) * | 1999-12-09 | 2004-08-31 | International Business Machines Corporation | Spin valve sensor free layer structure with a cobalt based layer that promotes magnetic stability and high magnetoresistance |
DE10059585A1 (de) * | 2000-11-30 | 2002-06-06 | Valeo Schalter & Sensoren Gmbh | Elektrische Schaltung und Verfahren zur Pulsmodulation eines Trägersignals |
JP2004265517A (ja) | 2003-02-28 | 2004-09-24 | Toshiba Corp | 磁気ヘッド、磁気ヘッドアセンブリおよび磁気記録再生装置 |
JP2005050418A (ja) | 2003-07-31 | 2005-02-24 | Toshiba Corp | 垂直通電型磁気ヘッドおよびそれを用いた磁気記録装置 |
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JP2007157221A (ja) | 2007-06-21 |
US7779535B2 (en) | 2010-08-24 |
US20070127165A1 (en) | 2007-06-07 |
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