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31. 发明专利

JPH10255234A MAGNETIC HEAD 失效
公开(公告)号：JPH10255234A
公开(公告)日：1998-09-25
申请号：JP6262497
申请日：1997-03-17
申请人： TOSHIBA CORP
发明人： OSAWA YUICHI , YODA HIROAKI , HORI AKIO , YOSHIKAWA MASAHISA , SAHASHI MASASHI
IPC分类号： G11B5/265 , G11B5/31 , G11B5/33 , G11B5/39 , G11B5/48
摘要： PROBLEM TO BE SOLVED: To inhibit the decrease of the reproducing sensitivity of a reproducing MR head caused by noise, and the generation of recording fringe of a recording head. SOLUTION: A magnetic head has a recording magnetic yokes 14 and 15 with a recording magnetic gap film 18 interposed on a medium facing side S, and similarly, has a reproducing magnetic yokes 26 and 27 with a reproducing magnetic gap film 30 interposed on the medium facing surface S. The magnetic yokes may be used combinedly for recording/reproducing. A recording coil 21, which supplies recording magnetic flux to recording medium through the recording magnetic yokes 14 and 15, is arranged on one main surface of the magnetic yokes 14 and 15. An MR element, to which signal magnetic flux is introduced from the recording medium through the reproducing magnetic yokes 26 and 27, is arranged on a main surface opposite to the recording coil 21 of the magnetic yokes 26 and 27. Alternatingly, a ferromagnetic layer is arranged on the extended surface of the magnetic gap film so that a film surface is almost orthogonal with respect to the film.

32. 发明专利

JPH10255226A THIN FILM MAGNETIC HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JPH10255226A
公开(公告)日：1998-09-25
申请号：JP6147997
申请日：1997-03-14
申请人： TOSHIBA CORP
发明人： HASHIMOTO SUSUMU , HARA MICHIKO , YODA HIROAKI
IPC分类号： G11B5/31
摘要： PROBLEM TO BE SOLVED: To enable the formation of a pole tip of an upper magnetic pole and a coil more closely to each other, and smooth an underlying surface of the upper magnetic pole, by improving the precision of a coil forming position in a thin film magnetic head. SOLUTION: A thin film magnetic head has a lower magnetic pole 17 and an upper magnetic pole 25 which are formed via a magnetic gap 21, and a coil 24 provided between these poles. The lower magnetic pole 17 has protrusions 20 to be forming positions for an upper magnetic pole tip 25a and the coil 24. In addition, a first non-magnetic insulating material layer 21a to be a part of the magnetic gap 21 and a recess forming insulating layer 22 are sequentially provided on the lower magnetic pole 17, and the recess forming insulating layer 22 has recesses 23 corresponding to the positions of the protrusions 20. In these recesses 23, the upper magnetic pole tip 25a and the coil 24 are formed in a buried state. The coil 24 and the upper magnetic pole 25 are insulated from each other by a second non-magnetic insulating material layer 21b to be a part of the magnetic gap 21.

33. 发明专利

JPH09305930A MAGNETIC RECORDING/REPRODUCING HEAD AND MANUFACTURE OF THE SAME 失效
公开(公告)号：JPH09305930A
公开(公告)日：1997-11-28
申请号：JP5867397
申请日：1997-03-13
申请人： TOSHIBA CORP
发明人： YODA HIROAKI , HORI AKIO , HARA MICHIKO , INOUE NAOYUKI , OHSAWA YUICHI , HASHIMOTO SUSUMU , SAKAKUBO TAKEO , OZAWA NORIO , SASHO TERUO
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To improve forming accuracy of the recording coil and recording track width of a recording coil located at the upper position in a magnetic recording/reproducing head structured by stacking a shield type MR head and an induction type magnetic recording head. SOLUTION: An MR film 34 having a pair of leads 35 is formed on a lower side shield layer 32 via a lower side reproducing magnetic gap film 33, an upper side shield layer 37 is formed on this MR film 34 via the upper side reproducing magnetic gap film 36 and a reproducing head 30 consisting of the shield type MR head is also formed. A recording head 40 consisting of an induction type magnetic head is structured by forming an upper side magnetic pole 42 on the lower side magnetic pole consisting of a magnetic material layer working as an upper side shield layer 37 via a recording magnetic gap film 41 and also forming a recording coil 43 to supply a recording magnetic flux to these magnetic poles 37, 42. The lower side magnetic pole 37 working as the upper side shield layer is provided with a hole 46 to lead out the electrode to guide the lead 35 of MR element.

34. 发明专利

JPH09251613A MAGNETIC HEAD 失效
公开(公告)号：JPH09251613A
公开(公告)日：1997-09-22
申请号：JP5865796
申请日：1996-03-15
申请人： TOSHIBA CORP
发明人： OSAWA YUICHI , YODA HIROAKI , IWASAKI HITOSHI
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To suppress the lowering of the charactristic of a magnetoresistive(MR) film, to improve a magnetic recording efficiency and to suppress the flowing in of noise into an MR head in the magnetic recording and reproducing head using a yoke type MR head. SOLUTION: On the upper part of the magnetoresistive effect element 4 formed on the substrate 2, a magnetic gap 10 formed in the direction almost perpendicular to the surface of the substrate 2 is interposed at the side of a medium counter surface S and also first and second magnetic cores 8, 9 respectively magnetically coupled with both ends of the magnetoresistive element 4 are formed. A recording coil 12 supplying a magnetic flux to magnetic cores 8, 9 is formed at the upper surface side of the cores 8, 9. Moreover, one parts of cores 8, 9 constituting a yoke part are arranged at a side nearer to the medium counter surface S than the magnetoresistive element 4 so as to cover the magnetoresistive element 4 when it is seen from the medium counter surface S.

35. 发明专利

JPH09245317A MAGNETORESISTIVE EFFECT HEAD 失效
公开(公告)号：JPH09245317A
公开(公告)日：1997-09-19
申请号：JP5061996
申请日：1996-03-07
申请人： TOSHIBA CORP
发明人： OSAWA YUICHI , YODA HIROAKI
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To attain the improving of a reproduced output by both satisfying the increase of the electric resistance and the decrease of a magnetoresistance of an MR film in a york type magnetoresistive effect(MR) head. SOLUTION: On first and second magnetic cores 4, 5 disposed to face oppositely by interposing magnetic gaps 6, 7 in the advancing direction of a recording medium. an MR film 8 is formed so that the longitudinal direction of the film becomes almost parallel with the magnetic gap 7 at a position retreating by a prescribed distance from the surface S opposite to the medium. The MR film is magnetically coupled with the first and second magnetic cores 4, 5 at its both sides. First and second leads 9, 10 are formed so as to make a sense current flow in a direction almost parallel with the magnetic gap 7 with respect to the MR head 8. Or, plural MR films are serially formed by straddling the magnetic gap 7 and also they are connected in series and the sense current is made to flow into them in the direction of this serial connection.

36. 发明专利

JPH08138216A MAGNETIC HEAD 失效
公开(公告)号：JPH08138216A
公开(公告)日：1996-05-31
申请号：JP23639395
申请日：1995-09-14
申请人： TOSHIBA CORP
发明人： KONDO REIKO , YODA HIROAKI , OSAWA YUICHI , IWASAKI HITOSHI , KAMIGUCHI YUZO , HASHIMOTO SUSUMU , SAHASHI MASASHI
IPC分类号： G11B5/39
摘要： PURPOSE: To make it possible to shift an operation point and to obtain a magnetic head dealing with a higher sensitivity and high frequency by inclining the magnetization direction of a magnetization fixing film by

37. 发明专利

JPH07307012A MAGNETO-RESISTIVE HEAD AND RECORDING AND REPRODUCING SEPARATION TYPE MAGNETIC HEAD 失效
公开(公告)号：JPH07307012A
公开(公告)日：1995-11-21
申请号：JP21737994
申请日：1994-09-12
申请人： TOSHIBA CORP
发明人： YODA HIROAKI , SAWABE ATSUHITO , HORI AKIO , IWASAKI HITOSHI , INOUE NAOYUKI
IPC分类号： G11B5/39
摘要： PURPOSE:To obtain a magneto-resistive head of a shielding type capable of dealing with such a high recording density system of a surface recording density exceeding, for example, Gb/inch . CONSTITUTION:This magneto-resistive magnetic head 21 is formed by clamping a magneto-resistance effect film 14 connected with a pair of leads 16 and having a magnetic field response part 14a by a pair of upper and lower shielding layers 12, 20 via insulating films 13, 18 for forming a magnetic gap. The head is so formed as to satisfy Ws

38. 发明专利

JPH0790558A FORMATION OF THIN FILM 失效
公开(公告)号：JPH0790558A
公开(公告)日：1995-04-04
申请号：JP22931393
申请日：1993-09-14
申请人： TOSHIBA CORP
发明人： SAWABE ATSUHITO , YODA HIROAKI
IPC分类号： C23C14/32 , H01L21/203
摘要： PURPOSE:To form films to fill the narrow grooves on a substrate at a high speed and to obtain the high-quality thin films by applying an electric field of a prescribed direction to ionized raw material particles to move these particles in parallel with the electric field direction and allowing the particles to progress in parallel with the flanks of the narrow grooves. CONSTITUTION:Inert gaseous ions are brought into collision against a target 7 arranged in a discharge chamber 3 to release the raw material particles. The particles are irradiated with electrons from an electron source 11, by which the raw material particles are ionized. The particle flow is then changed and moved in a direction perpendicular to the surface of the substrate 9 by the electric field generated by an acceleration electrode 13. The particle flow is made to arrive perpendicularly at the thin film forming surface of the substrate 9. The films to fill the narrow grooves are thus formed at a high speed by the particle flow having the unified directivity.

39. 发明专利

JPS61153811A MAGNETIC HEAD OF THIN-FILM MAGNETIC HEAD 失效
公开(公告)号：JPS61153811A
公开(公告)日：1986-07-12
申请号：JP27404084
申请日：1984-12-27
申请人： TOSHIBA CORP
发明人： OTA TOSHIHIKO , YODA HIROAKI
IPC分类号： G11B5/31
摘要： PURPOSE:To improve the efficiency of a head by forming a gap of an insulating film on a magnetic film, forming a gas protective film of a nonmagnetic conductor film thereupon, and reproducing the thin-film magnetic head by a specific subsequent process. CONSTITUTION:The work strain of the polished surface of a magnetic substrate 21 is removed and then the magnetic gap 22 is formed of the insulating of SiO2, etc., over the entire surface by vapor deposition to gap length. Then, the nonmagnetic conductor film as the gap protective film 23 is formed to an about 1mum thickness and then a conductor film 25 for a coil is formed over the entire surface of an insulating film 24 of oxide. Then, a coil pattern is formed by using photoresist 26 and the conductor film 25 for the coil is etched in a coil pattern; and an insulating film 27 is formed between the conductor film 25 for the coil and a coil lead-out wire after the resist 26 is removed, and front and back gap parts 121 and 122 and the insulating film of a coil lead-out wire hole 123 are etched. Then, the exposed part of the gap protective film 23 is removed by chemical etching and a magnetic core 28 and the coil lead-out wire are formed after the gap 22 of the back gap part 122' is removed.

40. 发明专利

JP2020092144A 磁気記憶装置及びその製造方法审中-公开
公开(公告)号：JP2020092144A
公开(公告)日：2020-06-11
申请号：JP2018227466
申请日：2018-12-04
申请人： TOSHIBA CORP
发明人： OSAWA YUICHI , SHIMIZU MARIKO , SHIRATORI SATOSHI , SUGIYAMA HIDEYUKI , ALTANSARGAI BUYANDALAI , YODA HIROAKI
IPC分类号： H01L21/8239 , H01L27/105 , H01L29/82 , H01L43/08
摘要：【課題】安定した動作が得られる磁気記憶装置及びその製造方法を提供する。【解決手段】実施形態に係る磁気記憶装置は、第1導電層と、第1磁性層と、第1対向磁性層と、第1非磁性層と、非磁性の第1金属層と、第1絶縁部と、第1絶縁層と、を含む。第1導電層は、第1領域と、第2領域と、第1領域と第2領域との間の第3領域と、を含む。第1対向磁性層は、第1領域から第2領域への第2方向と交差する第1方向において第3領域と第1磁性層との間に設けられる。第1磁性層は、第1磁性層と第1対向磁性層との間に設けられる。第1対向磁性層から第1金属層の少なくとも一部への方向は、第2方向に沿う。第1金属層から第1絶縁部への方向は、第1方向に沿う。第1磁性層の少なくとも一部から第1絶縁部への方向は、第2方向に沿う。第1絶縁層は、第2方向において第1金属層と第1対向磁性層との間に設けられる。【選択図】図1

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