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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：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：JP2006107625A
公开(公告)日：2006-04-20
申请号：JP2004292953
申请日：2004-10-05
Applicant: Akita Prefecture , Japan Science & Technology Agency , 独立行政法人科学技術振興機構 , 秋田県
Inventor： CHIBA TAKASHI , ARIAKE JUN , HONDA NAOKI
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording medium capable of developing a high vertical coercive force by decreasing the magnetic coupling between magnetic particles.
SOLUTION: The magnetic recording medium is characterized in to include a recording layer comprising a ferromagnetic body expressed in general formula: [(Co
1-m Pt
m )
1-n Cr
n ]
100-x-y Ta
x O
y , wherein m, n are atomic ratios, m is ≥0.2 and ≤0.4, n is ≥0 and ≤0.1, y is ≥16 at.% and ≤26 at.%, and y/x ≥1.7 and ≤2.3.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：提供能够通过减小磁性颗粒之间的磁耦合而产生高垂直矫顽力的磁记录介质。 解决方案：磁记录介质的特征在于包括由通式表示的铁磁体的记录层：[（Co
1-m Pt m SB> 1-n 其中m ，n为原子比，m为≥0.2，≤0.4，n为≥0，≤0.1，y为≥16原子％，≤26原子％，y /x≥1.7，≤2.3。 版权所有（C）2006，JPO＆NCIPI -
公开(公告)号：JP2001250204A
公开(公告)日：2001-09-14
申请号：JP2000060293
申请日：2000-03-06
Applicant: AKITA PREFECTURE
Inventor： ISE KAZUYUKI , YAMAKAWA KIYOSHI , HONDA NAOKI , OUCHI KAZUHIRO , NAKAMURA YOSHIHISA , SUGITA KEN , MURAOKA HIROAKI
IPC: G11B5/31
Abstract: PROBLEM TO BE SOLVED: To provide a thin film signal magnetic pole magnetic recording head high in recording sensitivity and easy in production. SOLUTION: This thin film signal magnetic pole magnetic recording head is composed of a main pole thin film 5 of a soft magnetic thin film, thin film conductor coils 3 and 6, and a magnetic core (2 and 7) of prescribed soft magnetic materials, and has at least two or more sets of the loop-shaped spiral shape thin film conductor coil whose number of turns >=1 ternes. These thin film conductors coils 3 and 6 are disposed on both sides in the film thickness direction of the main pole thin film 5, and are formed so that two thin film conductor coils 3 and 6 disposed between the both sides in the film thickness direction of the main pole thin film 5 are connected or not connected to each other at one place by using the conventional technique. Consequently, the front end of the main pole film is excited, then the magnetic head excellent in recording sensitivity and hardly being affected by the external magnetic field is easily manufactured.
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公开(公告)号：JP2000182802A
公开(公告)日：2000-06-30
申请号：JP35149698
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 enable making temperature coefficient of resistance(TCR) approach zero over a wide temperature range. SOLUTION: A resistance member is formed of a Ni-Cr based alloy, which contains one or at least two elements selected from among a group of Al, Si, Be, Mg, Ti and Mn and one or at least two elements selected from among a group of Mn, Fe, Co, Ti and V. In a resistance material, resistance value change rate of base metal is approximated by a quadratic formula for the temperature change, a primary element contributing to a primary coefficient αand a secondary element contributing to a secondary coefficient β are found. Doping quantity of the primary element and the secondary element are so decided that the coefficients α, β fall within prescribed ranges.
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Patent Agency Ranking
公开(公告)号：JPH11120523A
公开(公告)日：1999-04-30
申请号：JP28549497
申请日：1997-10-17
Applicant: AKITA PREFECTURE
Inventor： YAMAKAWA KIYOSHI , HONDA NAOKI , OUCHI KAZUHIRO
IPC: G11B5/39
Abstract: PROBLEM TO BE SOLVED: To provide a magnetoresistive effect head embodying multitracking with which recording and reproducing operation under a low flying height or sliding with high sensitivity and low noise is possible and higher density and higher speed are possible. SOLUTION: The magneto-resistive head of a yoke structure comprises a set of magnetic yokes (2, 7f, 7r) having gaps (4, 5) with which a prescribed reproduction resolution is obtainable, an anisotropic magnetoresistive effect element (AMR) 8 or giant magneto-resistive effect element (GMR) which is installed near the thinly formed part of these magnetic yokes, leading-out conductors (9, 10) for energizing either of these magneto-resistive effect elements (MRs) and a conductive 6 for bias magnetic field application to the magneto- resistive effect element 8 according to need. At this point, the magneto-resistive effect element 8 is arranged in contact with the magnetic yokes (7f, 7r) or in sufficient proximity to the distance below 100 nm. The plural magnetic heads are so arrayed in such a manner that the distance between the adjacent tracks attains
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公开(公告)号：JP2006107626A
公开(公告)日：2006-04-20
申请号：JP2004292954
申请日：2004-10-05
Applicant: Akita Prefecture , Japan Science & Technology Agency , 独立行政法人科学技術振興機構 , 秋田県
Inventor： CHIBA TAKASHI , ARIAKE JUN , HONDA NAOKI
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording medium capable of developing a high vertical coercive force by decreasing the magnetic coupling between magnetic particles.
SOLUTION: The magnetic recording medium is characterized in to include a recording layer comprising a ferromagnetic body expressed in general formula: [(Co
1-m Pt
m )
1-n Cr
n ]
100-x-y Ta
x O
y , wherein m, n are atomic ratios, m is ≥0.2 and ≤0.4, n is ≥0 and ≤0.1, y is ≥9 at.% and ≤13 at.%, and y/x is ≥1.8 and ≤2.3.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：提供能够通过减小磁性颗粒之间的磁耦合而产生高垂直矫顽力的磁记录介质。 解决方案：磁记录介质的特征在于包括由通式表示的铁磁体的记录层：[（Co
1-m Pt m SB> 1-n 其中m ，n为原子比，m为≥0.2，≤0.4，n为≥0，≤0.1，y为≥9at。％，≤13at。％，y / x为≥1.8，≤2.3。 版权所有（C）2006，JPO＆NCIPI -
公开(公告)号：JP2002008906A
公开(公告)日：2002-01-11
申请号：JP2000185306
申请日：2000-06-20
Applicant: ALPHA ELECTRONICS , AKITA PREFECTURE
Inventor： OUCHI KAZUHIRO , HONDA NAOKI , YAMAKAWA KIYOSHI , SATO MAKIO , OISHI AKIRA , SASAKI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To improve a resistor provided with a resistive laminate, composed of a plurality of resistors laminated on the surface of an insulating board to be improved in long-term stability, by reducing its temperature coefficient of resistance TCR to zero over a wide range of temperature. SOLUTION: When the rote of change of a resistance with temperature [Δt] for eaching resistor layer of the resistive laminate is approximated by the quadratic formula, [αΔt+β(Δt)2], or the formula of higher order, at least the signs of the linear temperature coefficient α and quadratic temperature coefficient β of a certain resistor layer are set opposite to those of the other resistor layer. A resistor layer of superior long-term reliability, how ever, is used as the uppermost layer of the resistive laminate. At least, α and β may be both set positive for one of the resistor layers, and α and β be both set negative for the other of the resistor layers. At least, one of the resistor layers may be formed of Ni-Cr alloy.
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公开(公告)号：JP2001273627A
公开(公告)日：2001-10-05
申请号：JP2000086979
申请日：2000-03-27
Applicant: KYOCERA CORP , AKITA PREFECTURE
Inventor： NAKAYAMA MASAHITO , SUGAWARA MAKOTO , ARIMUNE HISAO , ARIAKE JUN , HONDA NAOKI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a magnetic recording medium suppressing that the magnetic recording medium is affected by the crystal orientation of a substrate to easily have crystal anisotropy, having extremely reduced coercive force anisotropy and suitable for smoothly dealing with a trend toward the higher recording density, in the magnetic recording medium using a single crystal substrate. SOLUTION: The magnetic recording medium 8 is formed by successively laminating a growth control film 10, a seed layer 3, a base layer 4, a magnetic layer 5 consisting of a Co alloy layer having uniaxial crystal magnetic anisotropy and a non-magnetic protective layer 6 consisting of C, SiO and the like on the single crystal substrate 9.
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公开(公告)号：JP2001004728A
公开(公告)日：2001-01-12
申请号：JP24838799
申请日：1999-09-02
Applicant: MICRO MAGUNE KK , AKITA PREFECTURE
Inventor： MIURA YOSHINORI , YAMADA HIDETAKA , SHOJI SHINICHI , KITAGAWA YUTAKA , TAKAHASHI SHINGO , YAMAKAWA KIYOSHI , HONDA NAOKI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a magnetism detecting apparatus by which information on magnetism can be read out with high sensitivity from a magnetic medium whose residual magnetism is faint by a method wherein a magnet is attached to the intrusion side of the magnetic medium at a thin filmy magnetic sensor in such a way that the direction of a magnetic pole is at right angles to the advance direction of the magnetic medium, a return magnetic path is formed between the magnet and the magnetic sensor and a magnetic flux leakage is reduced. SOLUTION: A thin filmy magnetic sensor 1 is attached, by using a soft magnetic material 6, to the surface of the horizontal part 7a of a support base 7 which is formed in an H-shape. In addition, a permanent magnet 13 is attached to the intrusion side of a sheetlike magnetic medium 8 in such a way that the direction of a magnetic pole is at right angles to the advance direction of the magnetic medium 8. The permanent magnet 13 is constituted integrally in such a way that a U-shaped yoke 14 is assembled by the soft magnetic material 6 and that a spacer 15 is installed between the yoke 14 and the vertical part 7b of the support base 7, it is magnetically shielded by excluding a plane on which the magnet 13 faces the magnetic medium 8 so that a magnetic flux which is leaked to the side of the magnetic sensor 1 is reduced. Then, when the magnetic medium 8 is moved in parallel so as to come close to the magnetic sensor 1, an external-signal magnetic field 12 from the magnetic medium 8 is detected by the magnetic sensor 1 in a noncontact manner.
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