KR20020007157A - 폭이 좁은 기록 트랙폭을 갖는 박막 유도성 판독 기록헤드와, 그 제조 방법 및 사용 방법 - Google Patents
폭이 좁은 기록 트랙폭을 갖는 박막 유도성 판독 기록헤드와, 그 제조 방법 및 사용 방법 Download PDFInfo
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- KR20020007157A KR20020007157A KR1020010038224A KR20010038224A KR20020007157A KR 20020007157 A KR20020007157 A KR 20020007157A KR 1020010038224 A KR1020010038224 A KR 1020010038224A KR 20010038224 A KR20010038224 A KR 20010038224A KR 20020007157 A KR20020007157 A KR 20020007157A
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- head
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 239000010409 thin film Substances 0.000 title claims abstract description 32
- 230000001939 inductive effect Effects 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000010884 ion-beam technique Methods 0.000 claims description 31
- 238000009966 trimming Methods 0.000 claims description 8
- 229920002120 photoresistant polymer Polymers 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 6
- 210000001364 upper extremity Anatomy 0.000 claims 2
- 238000000992 sputter etching Methods 0.000 abstract 2
- 238000003801 milling Methods 0.000 description 38
- 239000000463 material Substances 0.000 description 15
- 235000012431 wafers Nutrition 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 7
- 238000000206 photolithography Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000007737 ion beam deposition Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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
- G11B5/33—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
-
- 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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- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
Claims (21)
- 폭이 현저하게 좁은 기록 트랙폭을 갖는 디스크 드라이브용의 적어도 하나의 박막 유도성 헤드를 제조하기 위한 고처리량 방법에 있어서,상부에 증착되는 적어도 하나의 제1 자성층과, 상기 제1 자성층의 상부에 증착되며 베이스 및 측벽을 가진 적어도 하나의 제2 자성층으로 구성된 웨이퍼를 제공하는 단계와;상기 제2 자성층의 측벽을 향해서 웨이퍼 법선에 대해서 소정의 각도로 실질적으로 지향되는 이온빔에 의해 상기 제2 자성층의 베이스를 트리밍하는 단계를 포함하는 박막 유도성 헤드를 제조하기 위한 고처리량 방법.
- 제1항에 있어서, 상기 트리밍 단계에 후속해서 상기 제1 자성층을 노칭하는 단계를 더 포함하는 것인 박막 유도성 헤드를 제조하기 위한 고처리량 방법.
- 제1항에 있어서, 상기 각도는 약 45°에서 약 85°까지의 범위 내에 있는 것인 박막 유도성 헤드를 제조하기 위한 고처리량 방법.
- 제3항에 있어서, 상기 각도는 약 70°의 범위인 것인 박막 유도성 헤드를 제조하기 위한 고처리량 방법.
- 제1항에 있어서, 상기 제2 자성층의 베이스는 0.8 ㎛ 미만의 베이스 기록 트랙폭으로 트리밍되는 것인 박막 유도성 헤드를 제조하기 위한 고처리량 방법.
- 제5항에 있어서, 상기 베이스 기록 트랙폭은 0.4 ㎛ 이하인 것인 박막 유도성 헤드를 제조하기 위한 고처리량 방법.
- 폭이 현저하게 좁은 기록 트랙폭을 갖는 통합된 MR 헤드를 제조하기 위한 고처리량 방법에 있어서,적어도 하나의 자성층을 웨이퍼 상에 증착하여 MR 헤드의 제2 차폐층 및 하부 극편을 형성하는 단계와;적어도 하나의 다른 자성층을 증착하여 상기 하부 극편 위에 상부 극편을 형성하는 단계를 포함하는데, 상기 상부 극편은 규정된 상부 극선단 소자를 가지며, 상기 상부 극선단 소자는 상기 기록 트랙폭을 규정하는 베이스 및 제1 세트의 측벽을 가지며;웨이퍼 법선에 대해서 소정의 각도로 상기 측벽으로 적어도 하나의 이온빔을 지향시켜서 상기 베이스를 트리밍하여 상기 기록 트랙폭을 저감하는 단계를 포함하는 통합된 MR 헤드를 제조하기 위한 고처리량 방법.
- 제7항에 있어서, 상기 각도는 적어도 약 45°의 범위이고 약 85°이하의 범위 내에 있는 것인 통합된 MR 헤드를 제조하기 위한 고처리량 방법.
- 제7항에 있어서, 상기 기록 트랙폭을 약 0.8 ㎛ 미만으로 저감하는 단계를 더 포함하는 것인 통합된 MR 헤드를 제조하기 위한 고처리량 방법.
- 제9항에 있어서, P1 노칭 공정을 수행하여 상기 상부 극편을 노칭하는 단계를 더 포함하고,상기 P1 노칭 공정은 상기 상부 극선단의 제1 세트의 측벽과 실질적으로 정렬된 제2 세트의 수직 측벽을 갖는 하부 극선단을 제공하는 것인 통합된 MR 헤드를 제조하기 위한 고처리량 방법.
- 제10항에 있어서, 상기 P1 노칭 공정을 수행하기 전에 상기 상부 극선단의 상부에 포토레지스트 마스크를 증착하는 단계를 더 포함하는 것인 통합된 MR 헤드를 제조하기 위한 고처리량 방법.
- 통합된 MR 헤드용 극선단을 형성하는 방법에 있어서,베이스, 상부, 제1 측벽 및 제2 측벽을 가지며, 상기 제1 측벽과 제2 측벽의 사이의 수평 거리에 의해 규정된 폭을 갖는 자성 상부 극선단을 웨이퍼 상에 증착하는 단계와;웨이퍼 법선에 대해서 소정의 각도로 상기 상부 극선단의 측벽으로 적어도 하나의 이온빔을 지향시켜서 상기 상부 극선단을 트리밍하여 상기 폭을 저감하는단계를 포함하는 통합된 MR 헤드용 극선단을 형성하는 방법.
- 제12항에 있어서, 상기 폭을 대략 0.8 ㎛ 미만으로 저감하는 단계를 더 포함하는 것인 통합된 MR 헤드용 극선단을 형성하는 방법.
- 제12항에 있어서, 상기 각도는 적어도 약 45°의 범위이고 약 85°이하의 범위 내에 있는 것인 통합된 MR 헤드용 극선단을 형성하는 방법.
- 적어도 2 개의 벽을 가지며, 상기 벽과 벽의 사이의 수평 거리를 0.8 ㎛ 미만인 기록 트랙폭을 규정하는 본체부를 구비한 박막 유도성 헤드.
- 제15항에 있어서, 0.4 ㎛ 이하의 기록 트랙폭을 갖는 것인 박막 유도성 헤드.
- 제1 극편 및 베이스, 상부, 제1 측벽 및 제2 측벽에 의해 경계 범위가 규정되는 제2 극편과;상기 제1 극편으로부터 연장하는 제1 극선단 및 상기 제2 극편으로부터 연장하는 제2 극선단과;상기 제1 측벽과 제2 측벽과의 사이의 수평 거리에 의해 규정된 기록 트랙폭을 포함하고,상기 기록 트랙폭은 실질적으로 약 0.8 ㎛ 미만인 것인 박막 유도성 판독 기록 헤드.
- 제17항에 있어서, 상기 박막 유도성 판독 기록 헤드는 통합된 MR 센서인 것인 박막 유도성 판독 기록 헤드.
- 제17항에 있어서, 상기 박막 유도성 판독 기록 헤드는 통합된 GMR 센서인 것인 박막 유도성 판독 기록 헤드.
- 자기 디스크와;청구항 제1항에 기재된 박막 유도성 헤드를 제조하기 위한 고처리량 방법을 통해 제조된 GMR 헤드와;상기 GMR 헤드를 지지하기 위한 액츄에이터 아암을 포함하는 디스크 드라이브.
- 자기 디스크와;청구항 제17항에 기재된 박막 유도성 판독 기록 헤드를 구비한 GMR 헤드와;상기 GMR 헤드를 지지하기 위한 액츄에이터 아암을 포함하는 디스크 드라이브.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/616,838 | 2000-07-14 | ||
US09/616,838 US6539610B1 (en) | 2000-07-14 | 2000-07-14 | Method for manufacturing a magnetic write head |
Publications (1)
Publication Number | Publication Date |
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KR20020007157A true KR20020007157A (ko) | 2002-01-26 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020010038224A Ceased KR20020007157A (ko) | 2000-07-14 | 2001-06-29 | 폭이 좁은 기록 트랙폭을 갖는 박막 유도성 판독 기록헤드와, 그 제조 방법 및 사용 방법 |
Country Status (3)
Country | Link |
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US (1) | US6539610B1 (ko) |
KR (1) | KR20020007157A (ko) |
SG (1) | SG99907A1 (ko) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4176322B2 (ja) * | 2001-03-26 | 2008-11-05 | Tdk株式会社 | 薄膜形成方法、及び薄膜磁気ヘッドの製造方法 |
US6947255B2 (en) * | 2002-03-22 | 2005-09-20 | International Business Machines Corporation | Magnetic head having a notched pole piece structure and method of making the same |
US7265941B2 (en) * | 2004-02-27 | 2007-09-04 | Hitachi Global Storage Technologies Netherlands B.V. | Self-aligned, notched trailing shield for perpendicular recording |
US7480983B2 (en) * | 2004-05-28 | 2009-01-27 | Hitachi Global Storage Technologies Netherlands B.V. | Method for making magnetic write head |
US7593186B2 (en) * | 2005-01-31 | 2009-09-22 | Hitachi Global Storage Technologies Netherlands B.V. | P1 write pole with shoulder formation |
US7536774B2 (en) | 2006-04-07 | 2009-05-26 | Hitachi Global Storage Technologies B.V. | Method and apparatus for integrating a stair notch and a gap bump at a pole tip in a write head |
US7675709B2 (en) * | 2006-09-21 | 2010-03-09 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic write head having a stair notched, steep shouldered pole and a write gap bump |
US8171618B1 (en) | 2009-06-17 | 2012-05-08 | Western Digital (Fremont), Llc | Tunable pole trim processes for fabricating trapezoidal perpendicular magnetic recording (PMR) write poles |
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US5438747A (en) * | 1994-03-09 | 1995-08-08 | International Business Machines Corporation | Method of making a thin film merged MR head with aligned pole tips |
JPH08167131A (ja) * | 1994-12-14 | 1996-06-25 | Hitachi Ltd | 薄膜磁気ヘッドの浮上面レールの形成方法並びに薄膜磁気ヘッド及び磁気ディスク装置 |
JPH10255233A (ja) * | 1997-03-14 | 1998-09-25 | Toshiba Corp | 磁気抵抗効果ヘッドの製造方法 |
JPH11273041A (ja) * | 1998-03-20 | 1999-10-08 | Tdk Corp | 磁気ディスク装置および記録再生方法 |
JP2000011320A (ja) * | 1998-06-23 | 2000-01-14 | Fujitsu Ltd | 薄膜磁気ヘッドの製造方法 |
JP2000105906A (ja) * | 1998-09-29 | 2000-04-11 | Tdk Corp | 薄膜磁気ヘッドの製造方法 |
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US5157570A (en) * | 1990-06-29 | 1992-10-20 | Digital Equipment Corporation | Magnetic pole configuration for high density thin film recording head |
KR0178238B1 (ko) * | 1995-09-30 | 1999-04-15 | 배순훈 | 박막 자기 헤드의 하부 자성층 패턴 형성 방법 |
US5912790A (en) * | 1996-03-15 | 1999-06-15 | Kabushiki Kaisha Toshiba | Thin film magnetic recording-reproducing head having a high recording density and high fidelity |
US5726841A (en) | 1996-06-11 | 1998-03-10 | Read-Rite Corporation | Thin film magnetic head with trimmed pole tips etched by focused ion beam for undershoot reduction |
US5874010A (en) | 1996-07-17 | 1999-02-23 | Headway Technologies, Inc. | Pole trimming technique for high data rate thin film heads |
US6034847A (en) * | 1996-12-25 | 2000-03-07 | Hitachi, Ltd. | Apparatus and thin film magnetic head with magnetic membrane layers of different resistivity |
US5804085A (en) | 1997-01-30 | 1998-09-08 | Quantum Corporation | Process for producing a pole-trimmed writer in a magnetoresistive read/write head and a data transducer made thereby |
JPH10228607A (ja) * | 1997-02-14 | 1998-08-25 | Fujitsu Ltd | 磁気ヘッドとその製造方法及び磁気記憶装置 |
US6064552A (en) * | 1997-03-18 | 2000-05-16 | Kabushiki Kaisha Toshiba | Magnetoresistive head having magnetic yoke and giant magnetoresistive element such that a first electrode is formed on the giant magnetoresistive element which in turn is formed on the magnetic yoke which acts as a second electrode |
US5916423A (en) | 1997-05-06 | 1999-06-29 | International Business Machines Corporation | P1 notched write head with minimum overmilled p1 and p2 |
US6031695A (en) * | 1997-09-05 | 2000-02-29 | International Business Machines Corporation | Combined read head and write head with non-magnetic electrically conductive layer on upper pole tip thereof |
US5996213A (en) * | 1998-01-30 | 1999-12-07 | Read-Rite Corporation | Thin film MR head and method of making wherein pole trim takes place at the wafer level |
-
2000
- 2000-07-14 US US09/616,838 patent/US6539610B1/en not_active Expired - Fee Related
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2001
- 2001-06-28 SG SG200103941A patent/SG99907A1/en unknown
- 2001-06-29 KR KR1020010038224A patent/KR20020007157A/ko not_active Ceased
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US5438747A (en) * | 1994-03-09 | 1995-08-08 | International Business Machines Corporation | Method of making a thin film merged MR head with aligned pole tips |
JPH08167131A (ja) * | 1994-12-14 | 1996-06-25 | Hitachi Ltd | 薄膜磁気ヘッドの浮上面レールの形成方法並びに薄膜磁気ヘッド及び磁気ディスク装置 |
JPH10255233A (ja) * | 1997-03-14 | 1998-09-25 | Toshiba Corp | 磁気抵抗効果ヘッドの製造方法 |
JPH11273041A (ja) * | 1998-03-20 | 1999-10-08 | Tdk Corp | 磁気ディスク装置および記録再生方法 |
JP2000011320A (ja) * | 1998-06-23 | 2000-01-14 | Fujitsu Ltd | 薄膜磁気ヘッドの製造方法 |
JP2000105906A (ja) * | 1998-09-29 | 2000-04-11 | Tdk Corp | 薄膜磁気ヘッドの製造方法 |
Also Published As
Publication number | Publication date |
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US6539610B1 (en) | 2003-04-01 |
SG99907A1 (en) | 2003-11-27 |
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