JP2009199712A - 垂直磁気記録ヘッドおよびその製造方法 - Google Patents
垂直磁気記録ヘッドおよびその製造方法 Download PDFInfo
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- JP2009199712A JP2009199712A JP2009042467A JP2009042467A JP2009199712A JP 2009199712 A JP2009199712 A JP 2009199712A JP 2009042467 A JP2009042467 A JP 2009042467A JP 2009042467 A JP2009042467 A JP 2009042467A JP 2009199712 A JP2009199712 A JP 2009199712A
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- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 230000004907 flux Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 59
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 23
- 238000000926 separation method Methods 0.000 claims description 23
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 claims description 9
- 238000000231 atomic layer deposition Methods 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 8
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 7
- 238000009713 electroplating Methods 0.000 claims description 7
- 229920002120 photoresistant polymer Polymers 0.000 claims description 7
- 229910052707 ruthenium Inorganic materials 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- 238000001020 plasma etching Methods 0.000 claims description 6
- 238000005240 physical vapour deposition Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 229910000531 Co alloy Inorganic materials 0.000 claims description 4
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 claims description 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 238000001039 wet etching Methods 0.000 claims description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims 1
- 229910002546 FeCo Inorganic materials 0.000 claims 1
- 229910002555 FeNi Inorganic materials 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 239000000696 magnetic material Substances 0.000 description 5
- 238000007747 plating Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010884 ion-beam technique Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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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
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
-
- 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
- G11B5/3109—Details
- G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
-
- 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
- G11B5/3109—Details
- G11B5/313—Disposition of layers
- G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
- G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
-
- 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
- G11B5/3109—Details
- G11B5/313—Disposition of layers
- G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
- G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
- G11B5/315—Shield layers on both sides of the main pole, e.g. in perpendicular magnetic heads
-
- 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
-
- 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
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49039—Fabricating head structure or component thereof including measuring or testing with dual gap materials
-
- 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
- Y10T29/49036—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
- 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
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49043—Depositing magnetic layer or coating
- Y10T29/49044—Plural magnetic deposition layers
-
- 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
- Y10T29/49036—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]
-
- 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
Abstract
【解決手段】磁極先端部16Aを三方向から囲む磁気シールド30を備えており、その磁気シールド30は一対のサイドシールド30Aとトレーリングシールド30Bとを一体化したものである。サイドシールド30Aとトレーリングシールド30Bとの間に接合面が生じないため、それらの間における磁束の流れが阻害されない。フリンジ磁界の強度が減少するため、隣接トラック消去の発生が抑制される。
【選択図】図2
Description
Claims (20)
- 基体の上に形成され、逆台形の断面形状を有する磁極先端部を含む主磁極と、
トラック幅方向における両側およびトレーリング側の三方向から前記磁極先端部を囲むように形成され、前記磁極先端部の両側に位置する一対のサイドシールドと前記磁極先端部のトレーリング側に位置するトレーリングシールドとが一体化された磁気シールドと、
前記主磁極と前記磁気シールドとの間に形成されたギャップ層と、を備えた
ことを特徴とする垂直磁気記録ヘッド。 - エアベアリング面において前記磁極先端部から垂直磁界を発生させるために磁束を発生させるスパイラル状の導電コイルを備えたことを特徴とする請求項1記載の垂直磁気記録ヘッド。
- 前記磁気シールドはニッケル鉄合金(NiFe)を含み、その厚さは300nm以上400nm以下であることを特徴とする請求項1記載の垂直磁気記録ヘッド。
- 前記主磁極は鉄ニッケル合金(FeNi)、コバルトニッケル鉄合金(CoNiFe)、鉄コバルト合金(FeCo)またはニッケル鉄合金を含み、その厚さは2μmであることを特徴とする請求項1記載の垂直磁気記録ヘッド。
- 前記ギャップ層はルテニウム(Ru)を含み、その厚さは30nm以上50nm以下であることを特徴とする請求項1記載の垂直磁気記録ヘッド。
- 前記磁極先端部のトレーリングエッジの幅は50nm以上500nm以下であることを特徴とする請求項1記載の垂直磁気記録ヘッド。
- 基体の上に分離層を形成する工程と、
前記分離層に前記基体まで達する溝を形成する工程と、
前記分離層の上および前記溝の内部に第1シード層を形成する工程と、
前記第1シード層の上に磁極先端部および磁極本体部を含む主磁極を形成する工程と、
前記第1シード層のうち、前記溝の外部に形成されている部分を除去する工程と、
前記分離層のうち、前記磁極先端部のトラック幅方向における両側に位置している部分を除去して空洞を形成する工程と、
前記主磁極の上および前記空洞の内部に第2シード層を形成する工程と、
前記第2シード層の上に前記磁極先端部の両側に位置する一対のサイドシールドと前記磁極先端部のトレーリング側に位置するトレーリングシールドとが一体化された磁気シールドを形成する工程と、を含む
ことを特徴とする垂直磁気記録ヘッドの製造方法。 - 物理蒸着法を用いて酸化アルミニウム(Al2 O3 )を含むと共に200nm以上400nm以下の厚さとなるように前記分離層を形成することを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。
- 逆台形の断面形状を有するように前記溝を形成することを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。
- 原子層堆積法を用いてルテニウムを含むと共に30nm以上80nm以下の厚さとなるように前記第1シード層を形成することを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。
- 前記主磁極を形成する工程は、
前記第1シード層の上に電気鍍金法を用いて主磁極を形成する工程と、
前記第1シード層をストップ層として用いて、その第1シード層が露出するまで前記主磁極を平坦化する工程と、を含む
ことを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。 - 鉄ニッケル合金、コバルトニッケル鉄合金、鉄コバルト合金またはニッケル鉄合金を含むと共に0.5μm以上1μm以下の厚さとなるように前記主磁極を形成することを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。
- 前記第1シード層を除去する工程において、前記分離層が露出するまで前記第1シード層をエッチングすることを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。
- 前記分離層を除去して前記空洞を形成する工程は、
前記分離層および前記磁極本体部の上にフォトレジストマスクを形成する工程と、
反応性イオンエッチング法またはアルカリ性溶液によるウェットエッチング法を用いて、前記分離層のうち、前記フォトレジストマスクにより覆われていない部分を前記基体が露出するまでエッチングする工程と、
前記フォトレジストマスクを除去する工程と、を含む
ことを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。 - 原子層堆積法を用いてルテニウムを含むように前記第2シード層を形成することを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。
- ルテニウムを含むと共に30nm以上50nm以下の総厚となるように前記第1および第2シード層を形成することを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。
- 前記磁気シールドを形成する工程は、
前記第2シード層の上に電気鍍金法を用いて磁気シールドを形成する工程と、
前記第2シード層のうち、前記磁気シールドにより覆われていない部分を除去する工程と、
原子層堆積法または物理蒸着法を用いて前記磁気シールドの上に酸化アルミニウム層を形成する工程と、
前記酸化アルミニウム層が消失すると共に前記磁極先端部の上側に位置する部分の厚さが0.6μmとなるまで前記磁気シールドを平坦化する工程と、を含む
ことを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。 - 鉄ニッケル合金、コバルトニッケル鉄合金、鉄コバルトニッケル合金またはニッケル鉄合金を含むと共に2μmの厚さとなるように前記磁気シールドを形成することを特徴とする請求項17記載の垂直磁気記録ヘッドの製造方法。
- 前記第2シード層を除去して前記磁極本体部を露出させる開口を形成する工程と、
前記開口の周囲にマスクパターンを形成する工程と、を含み、
前記磁気シールドを形成するための電気鍍金法を用いて、その磁気シールドと一緒に前記開口に上部ヨークを形成する
ことを特徴とする請求項17記載の垂直磁気記録ヘッドの製造方法。 - エアベアリング面において前記磁極先端部から垂直磁界を発生させるために磁束を発生させるスパイラル状の導電コイルを形成する工程を含むことを特徴とする請求項7記載の垂直磁気記録ヘッドの製造方法。
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US12/072,272 | 2008-02-25 | ||
US12/072,272 US8056213B2 (en) | 2007-10-03 | 2008-02-25 | Method to make PMR head with integrated side shield (ISS) |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US20110097601A1 (en) * | 2009-10-26 | 2011-04-28 | Headway Technologies, Inc. | Wrap-around shielded writer with highly homogeneous shield material |
JP2011222111A (ja) * | 2010-04-07 | 2011-11-04 | Headway Technologies Inc | 磁気的ホットスポットの形成の防止方法、垂直磁気記録ヘッドにおける第1および第2トレーリングシールドの形成方法、ならびに垂直磁気記録ヘッド |
JP2012028001A (ja) * | 2010-07-27 | 2012-02-09 | Hitachi Global Storage Technologies Netherlands Bv | クロストラック方向に磁気的にバイアスした、巻き付け式トレーリング磁気シールドを有する垂直磁気書き込みヘッド |
US8274757B2 (en) | 2011-01-18 | 2012-09-25 | Kabushiki Kaisha Toshiba | Recording head and disk drive with the same |
US8400733B2 (en) | 2010-11-24 | 2013-03-19 | HGST Netherlands B.V. | Process to make PMR writer with leading edge shield (LES) and leading edge taper (LET) |
US8470186B2 (en) | 2010-11-24 | 2013-06-25 | HGST Netherlands B.V. | Perpendicular write head with wrap around shield and conformal side gap |
US8524095B2 (en) | 2010-11-24 | 2013-09-03 | HGST Netherlands B.V. | Process to make PMR writer with leading edge shield (LES) and leading edge taper (LET) |
US8553371B2 (en) | 2010-11-24 | 2013-10-08 | HGST Netherlands B.V. | TMR reader without DLC capping structure |
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JP2009277314A (ja) * | 2008-05-16 | 2009-11-26 | Fujitsu Ltd | 薄膜磁気ヘッドの製造方法 |
US8031433B2 (en) | 2008-09-05 | 2011-10-04 | Headway Technologies, Inc. | Method to make an integrated side shield PMR head with non conformal side gap |
US8262918B1 (en) * | 2009-03-25 | 2012-09-11 | Western Digital (Fremont), Llc | Methods of producing damascene main pole for perpendicular magnetic recording head |
US8310786B2 (en) | 2009-09-09 | 2012-11-13 | Hitachi Global Storage Technologies Netherlands B.V. | Asymmetric writer for shingled magnetic recording |
US8085498B2 (en) * | 2009-09-17 | 2011-12-27 | Headway Technologies, Inc. | PMR write with flux choking area |
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Also Published As
Publication number | Publication date |
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US8614860B2 (en) | 2013-12-24 |
US20120069470A1 (en) | 2012-03-22 |
JP5719100B2 (ja) | 2015-05-13 |
US20090091862A1 (en) | 2009-04-09 |
US8056213B2 (en) | 2011-11-15 |
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