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    Process for Producing Ferrite Sintered Body
    12.
    发明申请
    Process for Producing Ferrite Sintered Body 审中-公开
    生产铁氧体烧结体的工艺

    公开(公告)号：US20080292538A1

    公开(公告)日：2008-11-27

    申请号：US10597498

    申请日：2005-01-18

    申请人： Yoshihiko Minachi ,  Junichi Nagaoka ,  Taku Murase ,  Noburo Ito ,  Shunsuke Kurasawa ,  Hidenobu Umeda

    发明人： Yoshihiko Minachi ,  Junichi Nagaoka ,  Taku Murase ,  Noburo Ito ,  Shunsuke Kurasawa ,  Hidenobu Umeda

    IPC分类号： C01D1/02

    CPC分类号： C04B35/2683 ,  C04B35/6261 ,  C04B35/62625 ,  C04B35/6265 ,  C04B35/62675 ,  C04B35/6268 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3241 ,  C04B2235/3272 ,  C04B2235/3418 ,  C04B2235/422 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/605 ,  C04B2235/83 ,  H01F1/11 ,  H01F41/0273

    摘要： There is provided a process for producing W-type ferrite having high magnetic properties by reducing compacting defects during wet compacting. Specifically, there is a provided a process for producing a ferrite sintered body having a main composition of the following formula (1): AFe2+aFe3+bO27 . . . (1) wherein 1.5≦a≦2.1, 14≦a+b≦18.5, and A is at least one element selected from Sr, Ba and Pb, the process comprising:a calcining step of obtaining a calcined body from a raw material compound; a first milling step of milling the calcined body to a predetermined size; a heat treatment step of holding fine powder obtained from the first milling step for a predetermined time in a predetermined temperature range in an atmosphere having an oxygen concentration of 10% by volume or less; a second milling step of milling the fine powder which has undergone the heat treatment step to a predetermined size; a step of wet compacting the fine powder which has undergone the second milling step in a magnetic field; and a sintering step of sintering the compacted body obtained by the wet compacting.

    摘要翻译： 提供了通过在湿式压实中减少压实缺陷来制造具有高磁特性的W型铁氧体的方法。 具体地说，提供了一种具有下式（1）的主要组成的铁氧体烧结体的方法：AFe2 + aFe3 + bO27。 。 。 （1）其中1.5 <= a <= 2.1,14 <= a + b <= 18.5，A是选自Sr，Ba和Pb中的至少一种元素，该方法包括：煅烧步骤，从 原料化合物; 将煅烧体研磨成预定尺寸的第一研磨步骤; 在氧浓度为10体积％以下的气氛中，将从第一研磨工序得到的细粉保持规定时间的规定温度范围的热处理工序; 将经过热处理步骤的细粉末研磨成预定尺寸的第二研磨步骤; 在磁场中湿式压实经过第二研磨步骤的细粉末的步骤; 以及烧结通过湿式压实获得的压实体的烧结步骤。

    Soft Magnetic Member and Magnetic Device Including the Same
    15.
    发明申请
    Soft Magnetic Member and Magnetic Device Including the Same 审中-公开
    软磁构件及其磁性装置

    公开(公告)号：US20080292876A1

    公开(公告)日：2008-11-27

    申请号：US10543863

    申请日：2003-12-16

    申请人： Kyung-Ku Choi ,  Taku Murase

    发明人： Kyung-Ku Choi ,  Taku Murase

    IPC分类号： B32B5/00 ,  B32B15/18

    CPC分类号： H01F10/131 ,  H01F10/132 ,  H01F10/265 ,  H01F17/0006 ,  H01F2017/0066 ,  H01L23/5227 ,  H01L2924/0002 ,  Y10T428/265 ,  Y10T428/31678 ,  H01L2924/00

    摘要： There is provided a soft magnetic member comprising a resin film 11 and a soft magnetic layer formed on the resin film 11, the soft magnetic layer comprising a T-L composition layer 7, wherein T is Fe or FeCO, and L is at least one element selected from the group consisting of C, B and N, and a Co based amorphous alloy layer 3 formed on either of the surfaces of the T-L composition layer 7. The Co based amorphous alloy layer 3 is combined with the T-L composition layer 7 to give a magnetic thin film for high frequency simultaneously exhibiting a high permeability and a high saturated magnetization. The magnetic thin film for high frequency can be formed on the resin film 11 because the magnetic thin film can exhibit excellent properties without a high-temperature heat treatment.

    摘要翻译： 提供了一种软磁性构件，其包括树脂膜11和形成在树脂膜11上的软磁性层，软磁性层包括TL组成层7，其中T是Fe或FeCO，L是选择的至少一种元素 来自由C，B和N组成的组，以及形成在TL组合物层7的任一表面上的Co基非晶合金层3.将Co基非晶合金层3与TL组合物层7组合，得到 同时表现出高磁导率和高饱和磁化强度的高频磁性薄膜。 可以在树脂膜11上形成用于高频的磁性薄膜，因为磁性薄膜可以在没有高温热处理的情况下表现出优异的性能。

    Magnetic thin film for high frequency, method of manufacturing the same, and magnetic device
    16.
    发明申请
    Magnetic thin film for high frequency, method of manufacturing the same, and magnetic device 审中-公开
    磁性薄膜用于高频，制造方法和磁性器件

    公开(公告)号：US20070072005A1

    公开(公告)日：2007-03-29

    申请号：US10571000

    申请日：2004-09-10

    申请人： Kyung-Ku Choi ,  Yohtaro Yamakazi ,  Taku Murase

    发明人： Kyung-Ku Choi ,  Yohtaro Yamakazi ,  Taku Murase

    IPC分类号： B32B15/00 ,  G11B5/33 ,  B05D5/12

    CPC分类号： B82Y25/00 ,  B82Y40/00 ,  H01F10/007 ,  H01F10/132 ,  H01F10/265 ,  H01F41/301 ,  Y10T428/115 ,  Y10T428/32

    摘要： By using a DM (discontinuous multilayer) structure formed of ferromagnetic metal in amorphous state and amorphous metal different from the ferromagnetic metal, a magnetic thin film for high frequencies is realized that has a high magnetic permeability in a high-frequency region of a GHz band and that has a high saturated magnetization. This magnetic thin film for high frequencies is preferably provided so that: (i) the ferromagnetic metal is predominantly composed of Fe or FeCo and contains one or more elements selected from the group of C, B, and N and the amorphous metal is a Co-base amorphous alloy; and (ii) the amorphous metal is CoZrNb.

    摘要翻译： 通过使用由非铁磁金属形成的DM（不连续多层）结构和与强磁性金属不同的非晶态金属，实现了在GHz频带的高频区域具有高磁导率的高频磁性薄膜 并且具有高饱和磁化强度。 这种高频用磁性薄膜优选地设置为：（i）强磁性金属主要由Fe或FeCo组成，并且含有选自C，B和N中的一种或多种元素，并且非晶态金属是Co 碱性非晶态合金; 和（ii）非晶态金属是CoZrNb。

    Radio wave absorbent
    18.
    发明授权
    Radio wave absorbent 失效
    无线电波吸收剂

    公开(公告)号：US6146545A

    公开(公告)日：2000-11-14

    申请号：US453074

    申请日：1999-12-02

    申请人： Taku Murase

    发明人： Taku Murase

    IPC分类号： H01F1/00 ,  C04B35/26 ,  C04B35/30 ,  C04B35/38 ,  H01F1/34 ,  H01Q17/00 ,  H05K9/00 ,  C04B35/01

    CPC分类号： H01Q17/004

    摘要： A radio wave absorbent which comprises, as a main component, a manganese-nickel-copper-zinc system ferrite comprising 2.0 to 14.5 mol % of nickel oxide, 3.5 to 17.0 mol % of copper oxide, 30.0 to 33.0 mol % of zinc oxide, 0.5 to 10.0 mol % of manganese oxide, and 40.0 to 50.5 mol % of iron oxide. By virtue of the above-mentioned composition, the radio wave absorbent of the present invention is advantageous not only in that the reflectivity in a wide frequency band of from a low frequency is -20 dB or less, but also in that the matching thickness is small, thus enabling lowering of the production cost.

    摘要翻译： 一种无线电波吸收剂，其以包含2.0至14.5mol％的氧化镍，3.5至17.0mol％的氧化铜，30.0至33.0mol％的氧化锌的锰 - 镍 - 铜 - 锌系铁素体为主要成分， 氧化锰为0.5〜10.0摩尔％，氧化铁为40.0〜50.5摩尔％。 由于上述组成，本发明的无线电波吸收体的优点在于，从低频的宽频带的反射率为-20dB以下，而且匹配厚度为 小，从而降低生产成本。

    High frequency magnetic thin film, composite magnetic thin film and magnetic device using them
    20.
    发明授权
    High frequency magnetic thin film, composite magnetic thin film and magnetic device using them 有权
    高频磁性薄膜，复合磁性薄膜和磁性装置使用它们

    公开(公告)号：US07369027B2

    公开(公告)日：2008-05-06

    申请号：US11696622

    申请日：2007-04-04

    申请人： Kyung-Ku Choi ,  Taku Murase ,  Yohtaro Yamazaki

    发明人： Kyung-Ku Choi ,  Taku Murase ,  Yohtaro Yamazaki

    IPC分类号： H01F5/00

    CPC分类号： H01L27/08 ,  B82Y25/00 ,  H01F1/15358 ,  H01F5/00 ,  H01F10/132 ,  H01F10/14 ,  H01F10/3204 ,  H01F17/0006 ,  H01F17/0013 ,  H01F17/04 ,  H01F41/0226 ,  H01F41/046

    摘要： A high frequency magnetic thin film characterized by comprising a first layer made of a T-L composition (here, T is Fe or FeCo, and L is one or more of C, B, and N) and a second layer comprising a Co-based amorphous alloy arranged on either of the surfaces of the first layer. The high frequency magnetic thin film is a multilayer film of a plurality of the first layers and a plurality of the second layers or desirably is a multilayer film of alternately laminated first and second layers. The high frequency magnetic thin film of the present invention exhibits the properties such that the real part (μ′) of the complex permeability is 400 or more at 1 GHz, a quality factor Q (Q=μ′/μ″) is 4 or more, and a saturation magnetization is 14 kG (1.4 T) or more.

    摘要翻译： 一种高频磁性薄膜，其特征在于包括由TL组合物制成的第一层（这里，T是Fe或FeCo，L是C，B和N中的一种或多种），第二层包含Co基非晶 合金布置在第一层的任一表面上。 高频磁性薄膜是多个第一层和多个第二层的多层膜，或期望地是交替层叠的第一层和第二层的多层膜。 本发明的高频磁性薄膜的特征在于，1GHz时的复磁导率的实数（μ'）为400以上，品质因数Q（Q = mu'/ mu“）为4 以上，饱和磁化强度为14kG（1.4T）以上。