DE69132614T2 - Dünnfilmmagnetkopf für eine magneto-optische Platteneinheit - Google Patents
Dünnfilmmagnetkopf für eine magneto-optische PlatteneinheitInfo
- Publication number
- DE69132614T2 DE69132614T2 DE69132614T DE69132614T DE69132614T2 DE 69132614 T2 DE69132614 T2 DE 69132614T2 DE 69132614 T DE69132614 T DE 69132614T DE 69132614 T DE69132614 T DE 69132614T DE 69132614 T2 DE69132614 T2 DE 69132614T2
- Authority
- DE
- Germany
- Prior art keywords
- thin film
- magnetic
- pole piece
- coil
- coils
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000010409 thin film Substances 0.000 title claims description 73
- 239000000758 substrate Substances 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 22
- 239000004020 conductor Substances 0.000 claims description 12
- 239000011810 insulating material Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 3
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 2
- 238000005530 etching Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 description 8
- 229920002120 photoresistant polymer Polymers 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229910018605 Ni—Zn Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
- G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/634,484 US5402293A (en) | 1990-12-27 | 1990-12-27 | Magneto-optical head having a thin film coil recessed into a magnetic substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69132614D1 DE69132614D1 (de) | 2001-06-21 |
| DE69132614T2 true DE69132614T2 (de) | 2001-11-29 |
Family
ID=24543993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69132614T Expired - Lifetime DE69132614T2 (de) | 1990-12-27 | 1991-12-11 | Dünnfilmmagnetkopf für eine magneto-optische Platteneinheit |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5402293A (OSRAM) |
| EP (2) | EP0492888A3 (OSRAM) |
| JP (1) | JPH04360049A (OSRAM) |
| DE (1) | DE69132614T2 (OSRAM) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392263A (en) * | 1990-01-31 | 1995-02-21 | Sony Corporation | Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens |
| FR2676303B1 (fr) * | 1991-05-07 | 1993-07-16 | Commissariat Energie Atomique | Tete magneto-optique integree de lecture et d'ecriture et procede de realisation. |
| JP3153947B2 (ja) * | 1993-04-28 | 2001-04-09 | ソニー株式会社 | 磁気ヘッド及び光磁気記録装置 |
| FR2705488B1 (fr) * | 1993-05-14 | 1995-06-23 | Commissariat Energie Atomique | Tête magnétique d'écriture pour enregistrement magnéto-optique. |
| JPH0863824A (ja) * | 1994-06-14 | 1996-03-08 | Canon Inc | 光磁気記録用磁気ヘッド、及びその製造方法、及び光磁気記録装置 |
| US6270696B1 (en) * | 1996-06-03 | 2001-08-07 | Terastor Corporation | Method of fabricating and integrating an optical assembly into a flying head |
| US5903525A (en) * | 1997-04-18 | 1999-05-11 | Read-Rite Corporation | Coil for use with magneto-optical head |
| US5886959A (en) * | 1997-04-18 | 1999-03-23 | Read-Rite Corporation | Thin-film electro-magnetic coil design for use in a flying magneto-optical head |
| US6922376B1 (en) | 1997-10-17 | 2005-07-26 | Sony Corportion | Sil magneto-optic transducer having thin film magnetic coil and holded magnetic core |
| US5978319A (en) * | 1997-11-06 | 1999-11-02 | Read-Rite Corporation | Thin electro-magnetic coil assembly for attachment to a slider |
| JPH11353603A (ja) | 1998-06-09 | 1999-12-24 | Alps Electric Co Ltd | 磁気ヘッド |
| US6191918B1 (en) * | 1998-10-23 | 2001-02-20 | International Business Machines Corporation | Embedded dual coil planar structure |
| JP2001236670A (ja) * | 2000-02-18 | 2001-08-31 | Sony Corp | 光学ヘッド用スライダ及びその製造方法並びに記録再生装置 |
| JP4019615B2 (ja) * | 2000-03-10 | 2007-12-12 | 富士ゼロックス株式会社 | 光磁気素子、光磁気ヘッドおよび磁気ディスク装置 |
| CN1327425C (zh) * | 2000-04-19 | 2007-07-18 | 皇家菲利浦电子有限公司 | 具有磁线圈的磁头 |
| JP3668112B2 (ja) * | 2000-09-07 | 2005-07-06 | 富士通株式会社 | 光磁気ヘッドおよび光磁気ヘッドのコイルの製造方法 |
| JP4070983B2 (ja) * | 2000-12-19 | 2008-04-02 | シャープ株式会社 | 磁気記録ヘッドおよび磁気記録装置 |
| US7289285B2 (en) * | 2002-10-24 | 2007-10-30 | Charles Frederick James Barnes | Information storage systems |
| JP4317470B2 (ja) * | 2004-02-25 | 2009-08-19 | Ｔｄｋ株式会社 | コイル部品及びその製造方法 |
| US8934189B2 (en) | 2013-05-07 | 2015-01-13 | International Business Machines Corporation | Magnetic write head having electrically biasable structures |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029904A (ja) * | 1983-07-28 | 1985-02-15 | Seiko Instr & Electronics Ltd | 光磁気記録用ヘッド |
| FR2559292A1 (fr) * | 1984-02-03 | 1985-08-09 | Commissariat Energie Atomique | Bobinage pour tete magnetique d'enregistrement en couche mince et son procede de realisation |
| JPS60214438A (ja) * | 1984-04-11 | 1985-10-26 | Seiko Epson Corp | 光磁気ヘツド |
| US4652954A (en) * | 1985-10-24 | 1987-03-24 | International Business Machines | Method for making a thin film magnetic head |
| JP2559372B2 (ja) * | 1986-07-09 | 1996-12-04 | 株式会社日立製作所 | 光ディスク装置及び光情報記録方法 |
| JPS6355704A (ja) * | 1986-08-26 | 1988-03-10 | Olympus Optical Co Ltd | 光磁気記録装置用磁界印加装置 |
| JPS63217547A (ja) * | 1987-03-04 | 1988-09-09 | Fujitsu Ltd | 光磁気情報記録装置 |
| JPS63249905A (ja) * | 1987-04-06 | 1988-10-17 | Nippon Telegr & Teleph Corp <Ntt> | 光磁気記録用磁界発生回路 |
| JPH0810481B2 (ja) * | 1987-04-24 | 1996-01-31 | 松下電器産業株式会社 | 薄膜磁気ヘツドの製造方法 |
| US5051970A (en) * | 1987-05-08 | 1991-09-24 | Nippon Telegraph And Telephone Corporation | Magneto-optic recording system with overwrite capability |
| JPH01137419A (ja) * | 1987-11-24 | 1989-05-30 | Fuji Photo Film Co Ltd | 薄膜磁気ヘッド |
| JPH0250302A (ja) * | 1988-08-12 | 1990-02-20 | Olympus Optical Co Ltd | 光磁気記録装置 |
| DE3836125A1 (de) * | 1988-10-22 | 1990-05-03 | Thomson Brandt Gmbh | Schaltungsanordnung zur umkehrung eines magnetfeldes |
| JPH02122410A (ja) * | 1988-10-31 | 1990-05-10 | Yamaha Corp | 薄膜磁気ヘッド |
| JPH02154348A (ja) * | 1988-12-07 | 1990-06-13 | Nippon Telegr & Teleph Corp <Ntt> | 光磁気記憶装置 |
| JPH02158942A (ja) * | 1988-12-12 | 1990-06-19 | Fuji Electric Co Ltd | 光磁気ヘッド |
| JP2813195B2 (ja) * | 1989-04-07 | 1998-10-22 | シャープ株式会社 | オーバライト用電磁石 |
| JP2677415B2 (ja) * | 1989-05-17 | 1997-11-17 | ティーディーケイ株式会社 | 薄膜磁気ヘッド |
| JP2847564B2 (ja) * | 1990-04-26 | 1999-01-20 | コニカ株式会社 | 光磁気記録装置 |
| JPH0413212A (ja) * | 1990-05-07 | 1992-01-17 | Mitsubishi Electric Corp | 薄膜磁気ヘッド |
| JPH1137419A (ja) * | 1997-07-18 | 1999-02-12 | Chugai Ro Co Ltd | ラインバーナ |
-
1990
- 1990-12-27 US US07/634,484 patent/US5402293A/en not_active Expired - Lifetime
-
1991
- 1991-12-11 EP EP19910311494 patent/EP0492888A3/en not_active Ceased
- 1991-12-11 EP EP96109404A patent/EP0742557B1/en not_active Expired - Lifetime
- 1991-12-11 DE DE69132614T patent/DE69132614T2/de not_active Expired - Lifetime
- 1991-12-13 JP JP3330472A patent/JPH04360049A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US5402293A (en) | 1995-03-28 |
| EP0742557A3 (OSRAM) | 1996-11-27 |
| DE69132614D1 (de) | 2001-06-21 |
| EP0492888A2 (en) | 1992-07-01 |
| EP0742557A2 (en) | 1996-11-13 |
| EP0742557B1 (en) | 2001-05-16 |
| JPH04360049A (ja) | 1992-12-14 |
| EP0492888A3 (en) | 1993-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |