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公开(公告)号：JP2005100520A
公开(公告)日：2005-04-14
申请号：JP2003332010
申请日：2003-09-24
Applicant: Akita Prefecture , 秋田県
Inventor： YAMAKAWA KIYOSHI , ISE KAZUYUKI , HONDA NAOKI , OUCHI KAZUHIRO , NAKAMURA YOSHIHISA , MURAOKA HIROAKI , AOI MOTOI
IPC: G11B5/31
Abstract: PROBLEM TO BE SOLVED: To provide a thin-film single magnetic pole magnetic head which can make a recorded magnetic field sharp and secure sufficient recording magnetic field intensity. SOLUTION: The thin-film single magnetic pole magnetic head 10 is formed by laminating on a substrate 1 a main magnetic pole 4 formed in a thin film form by a soft magnetic body, a coil 3 formed in a thin film form by a conductive body and an auxiliary yoke 5 formed in a thin film form by the soft magnetic body via an insulating layer 6. At least a part of the coil 3 is arranged on the downstream side of the main magnetic pole 4 in the rotational direction of a magnetic disk, and the auxiliary york 5 is arranged on the further downstream side to form the magnetic head 10. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种薄膜单磁极磁头，其可以使记录的磁场清晰并且确保足够的记录磁场强度。 解决方案：薄膜单磁极磁头10通过在基板1上层叠由软磁体形成的薄膜形式的主磁极4，以薄膜形式形成的线圈3由 由软磁体通过绝缘层6以薄膜形式形成的导电体和辅助磁轭5.线圈3的至少一部分沿着主磁极4的旋转方向配置在主磁极4的下游侧 一个磁盘和一个辅助键5设置在更下游侧，以形成磁头10.版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004362652A
公开(公告)日：2004-12-24
申请号：JP2003158425
申请日：2003-06-03
Applicant: Akita Prefecture , 秋田県
Inventor： TAGUCHI KO , TAKAHASHI SHINGO , YAMAKAWA KIYOSHI , OUCHI KAZUHIRO
IPC: G11B5/09
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording device capable of adjusting the position of the transition of recording magnetization by a system different from a general compensation processing before recording.
SOLUTION: This magnetic recording device is provided with a recording current generation device 12 for supplying a recording current RC to which a bias adjusted by a bias adjusting device 14 is added to a recording head during a recording operation.
COPYRIGHT: (C)2005,JPO&NCIPI-
公开(公告)号：JP2000182803A
公开(公告)日：2000-06-30
申请号：JP35149798
申请日：1998-12-10
Applicant: AKITA PREFECTURE , ALPHA ELECTRONICS
Inventor： OUCHI KAZUHIRO , HONDA NAOKI , YAMAKAWA KIYOSHI , SATO MAKIO , OISHI AKIRA , SASAKI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To simplify structure and manufacturing process and increase stability in a thin-film resistor, wherein a resistance thin film is formed on the surface of an insulating substrate. SOLUTION: A resistive thin film is formed of resistance material, wherein at least a predetermined quantity of Al is added to Ni-Cr alloy. Al contained in the resistance material is subjected to auto-oxidation, and an aluminum oxide film 14 is formed on the surface of a resistance thin film 12. When a resistance pattern is formed on the resistance thin film 12, it is preferable that the aluminum oxide film 14 be formed on the surface of the resistance pattern after formation and the side surface of the pattern. For the resistive thin film 12 used is, it is preferable that at% for Ni/Cr be 83/17 to 60/40, Doping quantity of Al be at least 3 at%, and other elements may be included for characteristics adjustment.
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公开(公告)号：JP2008123638A
公开(公告)日：2008-05-29
申请号：JP2006308907
申请日：2006-11-15
Applicant: Akita Prefecture , 秋田県
Inventor： HONDA NAOKI , YAMAKAWA KIYOSHI , KONDO YUJI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a bit pattern magnetic recording medium which effectively suppresses an increase in mutual static magnetic action between magnetic dots even in the case of high-density arrangement while it is necessary that a means for suppressing an increase in mutual static magnetic action between magnetic dots is introduced without reducing a magnetic dot size to realize a surface recording density of 1Tbit/in
2 or more in a bit pattern magnetic recording medium.
SOLUTION: The bit pattern magnetic recording medium having magnetic anisotropy in a vertical direction and including a magnetic film patterned into a dot shape is characterized in that some dots are coupled together in a track longitudinal direction. A coupled part cross section between the magnetic dots is equal to or less than 30% of the track width direction maximum cross section of a dot.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供一种位图形磁记录介质，即使在高密度排列的情况下也有效地抑制磁点之间的相互静磁作用的增加，同时需要抑制增加的装置 引入磁点之间的相互静磁作用而不减小磁点尺寸，以实现位图案磁记录介质中的1Tbit / in
2 以上的表面记录密度。 解决方案：具有在垂直方向上具有磁各向异性并且包括图案化为点状的磁性膜的位图形磁记录介质的特征在于，一些点在轨道纵向方向上耦合在一起。 磁点之间的耦合部分横截面等于或小于点的轨道宽度方向最大横截面的30％。 版权所有（C）2008，JPO＆INPIT -
公开(公告)号：JP2003332125A
公开(公告)日：2003-11-21
申请号：JP2002136065
申请日：2002-05-10
Applicant: Akita Prefecture , 秋田県
Inventor： SHINTAKU KAZUHIKO , YAMAKAWA KIYOSHI , OUCHI KAZUHIRO
CPC classification number: H01F10/16 , G11B5/3109 , Y10T428/32
Abstract: PROBLEM TO BE SOLVED: To provide a soft magnetic film with highly saturated magnetic flux density that has a highly saturated magnetic flux density, a small coercive force, and a large anisotropic magnetic field. SOLUTION: The soft magnetic film with highly saturated magnetic flux density contains Al 2 O 3 of 3% or less to Fe x Co 1-x (0.65≤x≤0.75). COPYRIGHT: (C)2004,JPO
Abstract translation: 要解决的问题：提供具有高饱和磁通密度，小矫顽力和大的各向异性磁场的具有高饱和磁通密度的软磁膜。
解决方案：具有高饱和磁通密度的软磁性膜含有Fe 3 SB 3的3％以下的Al
2 3 1-x （0.65≤x≤0.75）。 版权所有（C）2004，JPO -
Patent Agency Ranking
公开(公告)号：JP2002123920A
公开(公告)日：2002-04-26
申请号：JP2000311019
申请日：2000-10-11
Applicant: AKITA PREFECTURE
Inventor： SUZUKI YOSHIO , HONDA NAOKI , OUCHI KAZUHIRO
IPC: C23C14/06 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/667 , G11B5/73 , G11B5/738 , H01F10/16 , H01F10/30
Abstract: PROBLEM TO BE SOLVED: To provide a recording medium which realizes high-density information recording, particularly high recording resolution for magnetic recording. SOLUTION: An information recording layer made of a mixture of a L10 regular alloy selected from the following group (A) and MgO is used for a perpendicular magnetic recording medium. The group (A) includes FePt regular alloy, CoPt regular alloy, FePd regular alloy and alloys of these. The information recording layer has a fine magnetic domain structure and makes high- density recording possible as indicated by the reproduction output spectrum showing the result of the evaluation of recording and reproducing in one example of the magnetic recording medium. The medium can be produced at a lower film forming temperature compared to a L10 regular alloy mixture thin film by conventional techniques.
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公开(公告)号：JP2001101645A
公开(公告)日：2001-04-13
申请号：JP27641499
申请日：1999-09-29
Applicant: AKITA PREFECTURE
Inventor： SUZUKI YOSHIO , HONDA NAOKI , OUCHI KAZUHIRO
IPC: G11B5/667 , C23C14/18 , C23C14/34 , G11B5/00 , G11B5/64 , G11B5/66 , G11B5/73 , G11B5/851 , H01F10/12
Abstract: PROBLEM TO BE SOLVED: To provide an information recording medium achieving high reproducing output and high resolution in high density information recording, especially in magnetic recording. SOLUTION: An information recording medium having a layer 30 consisting of a soft magnetic material, a layer 20 consisting of a non-magnetic material and a L10 regular alloy information recording layer 10 selected from a group A which are formed successively, is manufactured by a specified method. The group A consists of a FePt regular alloy, a CoPt regular alloy or a FePd regular alloy and an alloy consisting thereof.
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公开(公告)号：JPH11120509A
公开(公告)日：1999-04-30
申请号：JP28549597
申请日：1997-10-17
Applicant: AKITA PREFECTURE
Inventor： ISE KAZUYUKI , YAMAKAWA KIYOSHI , HONDA NAOKI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a multitrack horizontal type thin film magnetic head for which positioning between a recording head and a reproducing head in manufacturing is unncessitated, by which simultaneous recording of plural tracks is performed without providing a gap between adjacent tracks and signals on plural tracks are collectively reproduced. SOLUTION: Plural pieces of single magnetic pole heads constituted of a pattern formed with a magnetic pole 6b, magnetic yokes 4b, 5b and conductive coils 2a, 2b consisting of a thin film through an insulation layer are formed similarly as the recording heads, and similarly, the reproducing heads are formed also adding prescribed magneto-resistive effect elements, and when they are made the horizontal type thin film magnetic heads accessible to face to e.g. a magnetic recording medium, the magnetic poles 6a, 6b, 6c, 6d of respective recording heads are arranged in the direction orthogonally intersecting with the track width direction, e.g. alternately so as to respectively answer to prescribed tracks, and are arranged efficiently so as to narrowly bring the gap between adjacent tracks in the track width direction close or to completely eliminate the spacing.
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公开(公告)号：JP2009181678A
公开(公告)日：2009-08-13
申请号：JP2008022052
申请日：2008-01-31
Applicant: Akita Prefecture , 秋田県
Inventor： HONDA NAOKI , YAMAKAWA KIYOSHI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a bit pattern magnetic recording medium, which substantially prevents an increase of a magnetostatic interaction between dense magnetic dots, so as to achieve a recording density of 1 Tbit/in
2 or higher.
SOLUTION: The bit pattern magnetic recording medium is provided with a soft-magnetic backing layer and magnetic dots patterned and formed on the soft-magnetic backing layer. In this case, the directions of the magnetic anisotropies of the magnetic dots incline in the track length direction. The directions of the magnetic anisotropies of the magnetic dots form angles of 10 to 80 degree or -10 to -80 degree to the surface of a film in a vertical film surface including the track length direction.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：提供一种位图形磁记录介质，其基本上防止了致密磁点之间的静磁相互作用的增加，从而实现1Tbit / in
2 或更高。 解决方案：位图形磁记录介质设置有软磁背衬层和图形化并形成在软磁背衬层上的磁点。 在这种情况下，磁点的磁各向异性的方向在轨道长度方向上倾斜。 磁性点的磁各向异性的方向在包括轨道长度方向的垂直膜表面中的膜表面形成10至80度或-10至-80度的角度。 版权所有（C）2009，JPO＆INPIT -
公开(公告)号：JP2002082151A
公开(公告)日：2002-03-22
申请号：JP2000275313
申请日：2000-09-11
Applicant: AKITA PREFECTURE
Inventor： TAN KENJI , YAMAKAWA KIYOSHI , HONDA NAOKI , OUCHI KAZUHIRO , YAMAGUCHI MASAHIRO , ARAI KENICHI , SHIMADA HIROSHI
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic field sensor whose sensitivity is high in the high-frequency region, indluding GHz band. SOLUTION: The magnetic field sensor is a magnetic field sensor, which is composed of a thin-film magnetic impedance effect element using a magnetic thin film from among magnetic impedance elements as magnetic field sensors, using a magnetic impedance effect. Especially regarding the size shape of the element for the magnetic field sensor, when a current frequency to be energized is 1 GHz or higher, the size (width) of a magnetism-sensitive part magnetic material in a direction nearly perpendicular to a magnetic field sensing direction is formed be small (e.g. 1 μm) and slender with reference to a magnetic field, in such a way that the change in an impedance reflecting a change in the magnetization of the magnetism-sensitive part magnetic material (a soft magnetic material or the like) is generated or that the most noticeable magnetic field of the magnetic resonance of the magnetism-sensitive part magnetic material is lowered. Thereby, the high sensitivity of a magnetism-sensitive part can be realized, as compared with the conventional element (width of 100 μm), as shown in the graph.
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