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    Magnetic head with improved core bonding
    3.
    发明授权
    Magnetic head with improved core bonding 失效
    磁头与改进的核心结合

    公开(公告)号：US5162960A

    公开(公告)日：1992-11-10

    申请号：US613691

    申请日：1990-11-20

    Applicant: Katsumi Sakata ,  Ikuko Sato ,  Tatsuo Kumura ,  Toshito Ikeda ,  Hiroya Eguchi ,  Hideaki Matsuyama ,  Hideaki Karamon

    Inventor： Katsumi Sakata ,  Ikuko Sato ,  Tatsuo Kumura ,  Toshito Ikeda ,  Hiroya Eguchi ,  Hideaki Matsuyama ,  Hideaki Karamon

    IPC: G11B5/127 ,  G11B5/187 ,  G11B5/23 ,  G11B5/235

    CPC classification number: G11B5/1878 ,  G11B5/1276 ,  Y10T29/49039

    Abstract: The formation of a gap in a magnetic head core or the junction of a thin magnetic film of a metal with an oxide substrate of a magnetic head made of a composite of a thin magnetic film of a metal with an oxide material are conducted by the thermal diffusion between gold layers themselves at a low temperature. Then, chromium or titanium is provided between the gold layer and the junction surface to prevent deterioration of magnetic characteristics and generation of a false gap and, at the same time, to heighten the junction strength. The thermal diffusion between the gold layers themselves is effected at a temperature lower than that of glass fusion to suppress the deterioration of magnetic characteristics, distortion caused by thermal expansion, and diffusion reaction on the interface. The chromium or titanium layer works to maintain function strength between the thin magnetic layer or the oxide substrate and the gold layer.

    Abstract translation: PCT No.PCT / JP90 / 00368 Sec。 371日期1990年11月20日 102（e）1990年11月20日日期PCT 1990年3月19日PCT PCT。 出版物WO90 / 11595 日期1990年10月4日。磁头芯中的间隙或金属的薄磁性膜与磁头的氧化物衬底的接合部的形成，所述磁头由金属的薄磁性膜与 氧化物材料通过金层本身之间的热扩散在低温下进行。 然后，在金层和接合面之间设置铬或钛，以防止磁特性的恶化和假间隙的产生，同时提高结合强度。 金层本身之间的热扩散在比玻璃熔融温度低的温度下进行，以抑制磁特性的劣化，由热膨胀引起的变形和界面上的扩散反应。 铬或钛层用于保持薄磁层或氧化物衬底与金层之间的功能强度。

    Magnetic head
    5.
    发明授权
    Magnetic head 失效
    磁头

    公开(公告)号：US5663857A

    公开(公告)日：1997-09-02

    申请号：US695757

    申请日：1996-08-08

    Applicant: Tatsuo Kumura ,  Fusashige Tokutake ,  Akira Urai ,  Junichi Honda ,  Hideaki Ojima

    Inventor： Tatsuo Kumura ,  Fusashige Tokutake ,  Akira Urai ,  Junichi Honda ,  Hideaki Ojima

    IPC: G11B5/31

    CPC classification number: G11B5/313

    Abstract: A magnetic head comprising a pair of magnetic core halves each having a magnetic core film sandwiched between a pair of non-magnetic substrates, said magnetic core halves being abutted to each other with the end faces of the magnetic core films facing each other, with a magnetic gap being defined in an interface of abutment of said magnetic core films, wherein the magnetic core film is of a laminated magnetic film structure comprising a plurality of laminated magnetic film units laminated with insulating films in-between. Each laminated magnetic film unit in turn comprises a plurality of magnetic films with non-magnetic films in-between, with the magnetic films being magnetostatically connected to one another at film ends. By employing the laminated magnetic film unit for the magnetic core film, it becomes possible to markedly increase the magnetic permeability in a direction normal to the gap depth when anisotropy is applied in the gap depth direction. With the above magnetic head, a plurality of the magnetic film units are laminated with insulating films in-between for suppressing eddy current losses in the high frequency region. As a result, excellent electro-magnetic transducing characteristics may be obtained in the high frequency range.

    Abstract translation: 一种磁头，包括一对磁芯半部，每个磁芯半部具有夹在一对非磁性基板之间的磁芯膜，所述磁芯半体彼此抵接，磁芯膜的端面彼此面对， 磁隙限定在所述磁芯膜的邻接界面中，其中所述磁芯膜是层叠的磁膜结构，其包括在其间层叠有绝缘膜的多个层压磁膜单元。 每个层压磁膜单元又包括在其间具有非磁性膜的多个磁性膜，磁膜在膜端彼此静磁连接。 通过采用层叠磁性膜单元作为磁芯膜，当在间隙深度方向上施加各向异性时，可以使垂直于间隙深度的方向显着增加导磁率。 利用上述磁头，多个磁性膜单元在其间层叠有绝缘膜，以抑制高频区域中的涡流损耗。 结果，可以在高频范围内获得优异的电磁转换特性。

    Magnetic transducer head having an alloy thin film of high saturation magnetic flux density slantly provided with respect to an operating magnetic gap formed therein
    8.
    发明授权
    Magnetic transducer head having an alloy thin film of high saturation magnetic flux density slantly provided with respect to an operating magnetic gap formed therein 失效
    具有相对于其中形成的工作磁隙倾斜地提供高饱和磁通密度的合金薄膜的磁性换能器头

    公开(公告)号：US4755899A

    公开(公告)日：1988-07-05

    申请号：US686540

    申请日：1984-12-26

    Applicant: Tomio Kobayashi ,  Heikichi Sato ,  Makoto Kubota ,  Shoichi Kano ,  Tatsuo Kumura ,  Kazushi Yamauchi ,  Yoshimi Takahashi ,  Junichi Saito

    Inventor： Tomio Kobayashi ,  Heikichi Sato ,  Makoto Kubota ,  Shoichi Kano ,  Tatsuo Kumura ,  Kazushi Yamauchi ,  Yoshimi Takahashi ,  Junichi Saito

    IPC: G11B5/147 ,  G11B5/127 ,  G11B5/187 ,  G11B5/23 ,  G11B5/245 ,  G11B5/31

    CPC classification number: G11B5/1871 ,  G11B5/127 ,  G11B5/187 ,  G11B5/3116 ,  G11B5/3163

    Abstract: A magnetic transducer head comprising a first magnetic core element and a second magnetic core element, each of the first and second core elements comprising a magnetic ferrite block and a magnetic metal thin film integrated with the magnetic ferrite block. These core elements having a first planar surface and a second planar surface. The magnetic metal thin film being provided on the second planar surface and having an edge thereof facing to the first planar surface, and the second planar surface being slantly provided with respect to said first planar surface. These core elements being bonded together to form an operating magnetic gap between the edge of the magnetic metal thin film on the first core element and the edge of the magnetic metal thin film on the second core element. The magnetic metal thin film on the first core element or the magnetic thin film on the second core element is formed in one common plane.The magnetic metal thin film may be formed of the ferromagnetic metals including Fe--Al--Si alloys, amorphous metal alloys or permalloy. And the magnetic metal thin film having substantially uniform columnar grain structure or uniform magnetic anisotropy, over entire area of the film.

    Abstract translation: 一种磁传感器头，包括第一磁芯元件和第二磁芯元件，所述第一和第二芯元件中的每一个包括磁性铁氧体块和与所述磁性铁氧体块集成的磁性金属薄膜。 这些芯元件具有第一平面和第二平面。 所述磁性金属薄膜设置在所述第二平坦表面上并且具有面向所述第一平面的边缘，并且所述第二平面相对于所述第一平面倾斜地设置。 这些芯元件结合在一起，以在第一芯元件上的磁性金属薄膜的边缘与第二芯元件上的磁性金属薄膜的边缘之间形成工作磁隙。 第一芯体上的磁性金属薄膜或第二芯体上的磁性薄膜形成在一个公共平面中。 磁性金属薄膜可以由包括Fe-Al-Si合金，非晶态金属合金或坡莫合金的铁磁性金属形成。 并且在膜的整个区域上具有基本均匀的柱状晶粒结构或均匀磁各向异性的磁性金属薄膜。

    Magnetic thin film
    9.
    发明授权
    Magnetic thin film 失效
    磁性薄膜

    公开(公告)号：US4683012A

    公开(公告)日：1987-07-28

    申请号：US720342

    申请日：1985-04-05

    Applicant: Kazushi Yamauchi ,  Muneyuki Ogata ,  Tomio Kobayashi ,  Makoto Kubota ,  Tatsuo Kumura

    Inventor： Kazushi Yamauchi ,  Muneyuki Ogata ,  Tomio Kobayashi ,  Makoto Kubota ,  Tatsuo Kumura

    IPC: C22C38/00 ,  G11B5/147 ,  G11B5/31 ,  H01F10/14 ,  H01F41/20 ,  C04B35/00

    CPC classification number: H01F10/147 ,  G11B5/147 ,  H01F41/20 ,  G11B5/3109 ,  Y10T428/12431

    Abstract: A magnetic thin film consisting essentially of Fe, Al and Si and further containing nitrogen has high magnetic permeability and high hardness without lowering the magnetic properties such as saturation magnetic flux density or coercive force.The magnetic thin film has an increased specific resistivity and a lowered eddy current loss in the high frequency region and is suitable for a core material of magnetic transducer heads used in a high frequency region.The magnetic thin film is prepared by, for example, physical vapor deposition or ion implantation.

    Abstract translation: 基本上由Fe，Al和Si组成并且进一步含有氮的磁性薄膜具有高磁导率和高硬度，而不降低诸如饱和磁通密度或矫顽力之类的磁性能。 磁性薄膜在高频区域具有增加的电阻率和降低的涡流损耗，并且适用于在高频区域中使用的磁性换能器头的芯材料。 磁性薄膜通过例如物理气相沉积或离子注入来制备。

    Amorphous soft magnetic material
    10.
    发明授权
    Amorphous soft magnetic material 失效
    无定形软磁材料

    公开(公告)号：US06132891A

    公开(公告)日：2000-10-17

    申请号：US854626

    申请日：1992-07-06

    Applicant: Tatsuo Kumura ,  Yukari Utsumi ,  Hideaki Karamon

    Inventor： Tatsuo Kumura ,  Yukari Utsumi ,  Hideaki Karamon

    IPC: C22C45/04 ,  G11B5/21 ,  G11B5/667 ,  H01F1/153 ,  G11B5/66

    CPC classification number: H01F1/15316 ,  C22C45/04 ,  G11B5/21 ,  Y10S428/90 ,  Y10T428/115 ,  Y10T428/12431 ,  Y10T428/12465

    Abstract: There is disclosed an amorphous soft magnetic material represented by a composition formula:Co.sub.x Zr.sub.y Pd.sub.z M.sub.a wherein M denotes at least one element selected from a group consisting of niobium, chromium, vanadium, tantalum, tungsten, molybdenum; and0.82.ltoreq.x.ltoreq.0.940.04.ltoreq.y.ltoreq.0.100.01.ltoreq.z.ltoreq.0.080.01.ltoreq.a.ltoreq.0.10.The amorphous soft magnetic material, which has a high saturated magnetic flux density, a low coercive force, a high magnetic permeability and excellent wear and corrosion resistances, can be obtained by adding at least one or more of the elements of the Va and VIa groups to a Co--Zr--Pd amorphous soft magnetic material.

    Abstract translation: PCT No.PCT / JP91 / 01458 Sec。 371日期：1992年7月6日 102（e）日期1992年7月6日PCT 1991年10月25日PCT PCT。 第WO92 / 09091号公报。 日期：1992年5月29日公开了由组成式：CoxZryPdzMa表示的无定形软磁性材料，其中M表示选自铌，铬，钒，钽，钨，钼中的至少一种元素; 和0.82

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