公开(公告)号：US06351204B1

公开(公告)日：2002-02-26

申请号：US09565285

申请日：2000-05-02

申请人： Kiyohito Yamasawa ,  Yasuo Hayakawa ,  Takashi Hatanai ,  Akihiro Makino ,  Yutaka Naito ,  Naoya Hasegawa

发明人： Kiyohito Yamasawa ,  Yasuo Hayakawa ,  Takashi Hatanai ,  Akihiro Makino ,  Yutaka Naito ,  Naoya Hasegawa

IPC分类号： H01F500

CPC分类号： H01F10/187 ,  H01F17/0006 ,  H01F2017/0066

摘要： A thin magnetic element comprising a coil pattern formed on at least one side of a substrate and a thin magnetic film formed on the coil pattern, wherein, assuming that the thickness and width of a coil conductor constituting the coil pattern are t and a, respectively, an aspect ratio t/a of the coil conductor satisfies the relationship 0.035≦t/a≦0.35, and the thin magnetic film has a resistivity of 400 &mgr;&OHgr;cm or more.

摘要翻译： 一种薄磁性元件，包括形成在衬底的至少一侧的线圈图案和形成在线圈图案上的薄磁膜，其中，假定构成线圈图案的线圈导体的厚度和宽度分别为t和a ，线圈导体的纵横比t / a满足关系0.035 <= t / a <= 0.35，薄磁膜的电阻​​率为400μΩEG·cm以上。

公开(公告)号：US6140902A

公开(公告)日：2000-10-31

申请号：US904058

申请日：1997-07-31

申请人： Kiyohito Yamasawa ,  Yasuo Hayakawa ,  Takashi Hatanai ,  Akihiro Makino ,  Yutaka Naito ,  Naoya Hasegawa

发明人： Kiyohito Yamasawa ,  Yasuo Hayakawa ,  Takashi Hatanai ,  Akihiro Makino ,  Yutaka Naito ,  Naoya Hasegawa

IPC分类号： H01F10/14 ,  H01F10/187 ,  H01F17/00 ,  H01F27/30

CPC分类号： H01F10/187 ,  H01F17/0006 ,  H01F2017/0066

摘要： A thin magnetic element which comprises a coil pattern formed on at least one side of a substrate and a thin magnetic film formed on the coil pattern, wherein:said thin magnetic film is for++med to a thickness of 0.5 .mu.m or greater but 8 .mu.m or smaller;and at least one of the following conditions, that is, assuming that the thickness and width of a coil conductor constituting the coil pattern are t and a, respectively, an aspect ratio t/a of the coil conductor satisfies the following relationship: 0.035.ltoreq.t/a.ltoreq.0.35;and assuming that the width of the conductor constituting the coil pattern is a and the distance between the mutually adjacent coil conductors in the coil pattern is b, the following relationship: 0.2.ltoreq.a/(a+b) is satisfied.

摘要翻译： 一种薄磁性元件，其包括形成在基板的至少一侧的线圈图案和形成在线圈图案上的薄磁膜，其中：所述薄磁膜用于++ med至0.5μm或更大的厚度，但是 8亩以下; 以及以下条件中的至少一个，即构成线圈图案的线圈导体的厚度和宽度分别为t和a，线圈导体的纵横比t / a满足以下关系：0.035 < /=t/a

公开(公告)号：US6083325A

公开(公告)日：2000-07-04

申请号：US893768

申请日：1997-07-11

申请人： Teruo Bitoh ,  Yasuo Hayakawa ,  Takashi Hatanai ,  Akihiro Makino ,  Akihisa Inoue ,  Tsuyoshi Masumoto

发明人： Teruo Bitoh ,  Yasuo Hayakawa ,  Takashi Hatanai ,  Akihiro Makino ,  Akihisa Inoue ,  Tsuyoshi Masumoto

IPC分类号： H01F1/153 ,  H01F1/147

CPC分类号： H01F1/15308 ,  H01F1/15341

摘要： A method for making a Fe-based soft magnetic alloy where an alloy melt is injected onto a moving cooling unit to form an amorphous alloy ribbon. The alloy melt contains Fe as a main component, B and at least one metallic element M selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo and W, the composition of the alloy melt being selected such that the resulting amorphous alloy ribbon is characterized by a first crystallization temperature at which fine grain bcc Fe crystallites precipitate, and a second crystallization temperature at which a compound phase containing Fe--B and/or Fe--M precipitates. The amorphous alloy ribbon is then annealed at a temperature which is higher that the first crystallization temperature and less than the second crystallization temperature for an annealing time in the range of 0 minutes to 20 minutes.

摘要翻译： 一种制造Fe基软磁合金的方法，其中将合金熔体注入到移动的冷却单元上以形成非晶合金带。 合金熔体含有Fe作为主要成分，B和选自Ti，Zr，Hf，V，Nb，Ta，Mo和W中的至少一种金属元素M，选择合金熔体的组成使得 所得到的非晶合金带的特征在于细晶粒bcc Fe微晶析出的第一结晶温度和含有Fe-B和/或Fe-M的化合物相析出的第二结晶温度。 然后在0分钟至20分钟的范围内，在比第一结晶温度高且低于第二结晶温度的退火时间的温度下退火非晶态合金带。

公开(公告)号：US5833770A

公开(公告)日：1998-11-10

申请号：US802040

申请日：1997-02-18

申请人： Kumiko Ominato ,  Naoya Hasegawa ,  Yasuo Hayakawa ,  Akihiro Makino

发明人： Kumiko Ominato ,  Naoya Hasegawa ,  Yasuo Hayakawa ,  Akihiro Makino

IPC分类号： C23C14/18 ,  H01F1/153 ,  H01Q7/08 ,  H01Q17/00 ,  H01F1/147

CPC分类号： H01Q7/08 ,  C23C14/185 ,  H01F1/15316 ,  H01Q17/00

摘要： A soft magnetic alloy used as a radio frequency magnetic material and having high resistivity and high magnetic permeability in a high frequency band, and an inductor, a wave absorber and antenna each comprising the soft magnetic alloy. The soft magnetic alloy has a crystal phase containing Co as a main component and at least one element T selected as a primary component from Fe, Ni, Pd, Mn and Al, and having a face-centered cubic structure, a body-centered cubic structure or a mixture thereof having an average crystal grain size of 30 nm or less; and a ferromagnetic amorphous phase surrounding the crystal phase and containing at least one element M selected from Ti, Zr, Hf, Nb, Ta, Mo, W, Y and rare earth elements, O, N, C, B, at least one oxide of element M, Fe and element T.

摘要翻译： 用作射频磁性材料并在高频带中具有高电阻率和高磁导率的软磁合金，以及每个包含该软磁合金的电感器，波吸收器和天线。 该软磁性合金具有含有Co作为主要成分和从Fe，Ni，Pd，Mn和Al中选择为主要成分的至少一种元素T的晶相，并且具有面心立方结构，体心立方体 结构或其平均晶粒尺寸为30nm以下的混合物; 以及包含结晶相并含有选自Ti，Zr，Hf，Nb，Ta，Mo，W，Y和稀土元素，O，N，C，B中的至少一种元素M的铁磁非晶相，至少一种氧化物 元素M，Fe和元素T.

公开(公告)号：US5896078A

公开(公告)日：1999-04-20

申请号：US545295

申请日：1995-10-19

申请人： Yasuo Hayakawa ,  Akihiro Makino

发明人： Yasuo Hayakawa ,  Akihiro Makino

IPC分类号： C23C14/14 ,  C22C38/00 ,  C22C45/02 ,  H01F10/00 ,  H01F10/13 ,  H01F10/14 ,  H01F17/00 ,  H01F41/04 ,  H01F27/30

CPC分类号： B82Y25/00 ,  H01F10/007 ,  H01F10/131 ,  H01F10/136 ,  H01F10/147 ,  H01F17/0013 ,  H01F41/046

摘要： A soft magnetic alloy thin film includes a fine crystalline phase and an amorphous phase. The fine crystalline phase includes an average crystalline grain size of 10 nm or less in diameter and has body-centered cubic structure mainly composed of Fe. The amorphous phase has a nitrogen (N) compound as the main composition and occupies at least 50% of the structure of the thin film. An element M is incorporated at least in the amorphous phase, and includes at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, W, and rare earth metal elements. A plane-type magnetic device is made using this thin film.

摘要翻译： 软磁性合金薄膜包括细晶相和非晶相。 细结晶相的直径平均晶粒尺寸为10nm以下，主要由Fe构成的体心立方结构。 非晶相具有氮（N）化合物作为主要成分，占薄膜结构的至少50％。 元素M至少包含在非晶相中，并且包括选自Ti，Zr，Hf，V，Nb，Ta，W和稀土金属元素中的至少一种元素。 使用该薄膜制造平面型磁性装置。

公开(公告)号：US07599155B2

公开(公告)日：2009-10-06

申请号：US10823474

申请日：2004-04-13

申请人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

发明人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

IPC分类号： G11B5/39

CPC分类号： G11B5/3903 ,  G11B5/3163 ,  G11B5/398

摘要： A CPP giant magnetoresistive head includes lower and upper shield layers, and a giant magnetoresistive element disposed between the upper and lower shield layers and including a pinned magnetic layer, a free magnetic layer and a nonmagnetic layer disposed between the pinned magnetic layer and the free magnetic layer. In the CPP giant magnetoresistive head, the pinned magnetic layer extends to the rear of the nonmagnetic layer and the free magnetic layer in the height direction, and the dimension of the pinned magnetic layer in the height direction is larger than that in the track width direction. Also, the pinned magnetic layer comprises a magnetic material having a positive magnetostriction constant or a magnetic material having high coercive force, and the end of the pinned magnetic layer is exposed at a surface facing a recording medium.

摘要翻译： CPP巨磁阻头包括下屏蔽层和上屏蔽层，以及设置在上屏蔽层和下屏蔽层之间的巨磁阻元件，包括固定磁性层，自由磁性层和设置在被钉扎的磁性层和自由磁性层之间的非磁性层 层。 在CPP巨磁阻磁头中，被钉扎的磁性层在高度方向上延伸到非磁性层的后部和自由磁性层，并且被钉扎的磁性层在高度方向上的尺寸大于轨道宽度方向上的尺寸 。 此外，钉扎磁性层包括具有正的磁致伸缩常数的磁性材料或具有高矫顽力的磁性材料，并且被钉扎的磁性层的端部在面向记录介质的表面上暴露。

公开(公告)号：US20090316308A1

公开(公告)日：2009-12-24

申请号：US12548982

申请日：2009-08-27

申请人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

发明人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

IPC分类号： G11B5/127

CPC分类号： G11B5/3903 ,  G11B5/3163 ,  G11B5/398

摘要： A CPP giant magnetoresistive head includes lower and upper shield layers, and a giant magnetoresistive element disposed between the upper and lower shield layers and including a pinned magnetic layer, a free magnetic layer and a nonmagnetic layer disposed between the pinned magnetic layer and the free magnetic layer. In the CPP giant magnetoresistive head, the pinned magnetic layer extends to the rear of the nonmagnetic layer and the free magnetic layer in the height direction, and the dimension of the pinned magnetic layer in the height direction is larger than that in the track width direction. Also, the pinned magnetic layer comprises a magnetic material having a positive magnetostriction constant or a magnetic material having high coercive force, and the end of the pinned magnetic layer is exposed at a surface facing a recording medium.

摘要翻译： CPP巨磁阻头包括下屏蔽层和上屏蔽层，以及设置在上屏蔽层和下屏蔽层之间的巨磁阻元件，包括固定磁性层，自由磁性层和设置在被钉扎的磁性层和自由磁性层之间的非磁性层 层。 在CPP巨磁阻磁头中，被钉扎的磁性层在高度方向上延伸到非磁性层的后部和自由磁性层，并且被钉扎的磁性层在高度方向上的尺寸大于轨道宽度方向上的尺寸 。 此外，钉扎磁性层包括具有正的磁致伸缩常数的磁性材料或具有高矫顽力的磁性材料，并且被钉扎的磁性层的端部在面向记录介质的表面上暴露。

公开(公告)号：US07800867B2

公开(公告)日：2010-09-21

申请号：US12548982

申请日：2009-08-27

申请人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

发明人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

IPC分类号： G11B5/39

CPC分类号： G11B5/3903 ,  G11B5/3163 ,  G11B5/398

摘要： A CPP giant magnetoresistive head includes lower and upper shield layers, and a giant magnetoresistive element disposed between the upper and lower shield layers and including a pinned magnetic layer, a free magnetic layer and a nonmagnetic layer disposed between the pinned magnetic layer and the free magnetic layer. In the CPP giant magnetoresistive head, the pinned magnetic layer extends to the rear of the nonmagnetic layer and the free magnetic layer in the height direction, and the dimension of the pinned magnetic layer in the height direction is larger than that in the track width direction. Also, the pinned magnetic layer comprises a magnetic material having a positive magnetostriction constant or a magnetic material having high coercive force, and the end of the pinned magnetic layer is exposed at a surface facing a recording medium.

摘要翻译： CPP巨磁阻头包括下屏蔽层和上屏蔽层，以及设置在上屏蔽层和下屏蔽层之间的巨磁阻元件，包括钉扎磁性层，自由磁性层和设置在被钉扎的磁性层和自由磁性层之间的非磁性层 层。 在CPP巨磁阻磁头中，被钉扎的磁性层在高度方向上延伸到非磁性层的后部和自由磁性层，并且被钉扎的磁性层在高度方向上的尺寸大于轨道宽度方向上的尺寸 。 此外，钉扎磁性层包括具有正的磁致伸缩常数的磁性材料或具有高矫顽力的磁性材料，并且被钉扎的磁性层的端部在面向记录介质的表面上暴露。

公开(公告)号：US07220499B2

公开(公告)日：2007-05-22

申请号：US10823484

申请日：2004-04-13

申请人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

发明人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

IPC分类号： G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3929 ,  G11B2005/3996 ,  H01F10/3218 ,  H01F10/3263 ,  H01F10/3272 ,  Y10T428/1121 ,  Y10T428/1143 ,  Y10T428/1171 ,  Y10T428/1193

摘要： A CPP giant magnetoresistive head includes lower and upper shield layers with a predetermined distance therebetween, and a giant magnetoresistive element (GMR) including pinned and free magnetic layers disposed between the upper and lower shield layers with a nonmagnetic layer interposed between the pinned and free magnetic layers. A current flows perpendicularly to the film plane of the GMR. The magnetoresistive head further includes an antiferromagnetic layer (an insulating AF of Ni—O or α-Fe2O3) provided in the rear of the GMR in a height direction to make contact with the upper or lower surface of a rear portion of the pinned magnetic layer which extends in the height direction, and an exchange coupling magnetic field is produced at the interface with the upper or lower surface, so that the magnetization direction of the pinned magnetic layer is pinned by the exchange coupling magnetic field in the height direction.

摘要翻译： CPP巨磁阻头包括其间具有预定距离的下屏蔽层和上屏蔽层，以及包括固定和自由磁性层的巨磁阻元件（GMR），其设置在上屏蔽层和下屏蔽层之间，其中非磁性层插入在固定和自由磁性层之间 层。 A电流垂直于GMR的膜平面流动。 磁阻头还包括设置在GMR后部的反铁磁层（Ni-O或α-Fe 2 O 3 3 3的绝缘AF），其高度方向为 与在高度方向上延伸的被钉扎磁性层的后部的上表面或下表面接触，并且在与上表面或下表面的界面处产生交换耦合磁场，使得固定的磁化方向 磁性层被高度方向的交换耦合磁场固定。

公开(公告)号：US06707649B2

公开(公告)日：2004-03-16

申请号：US10103358

申请日：2002-03-20

申请人： Naoya Hasegawa ,  Yasuo Hayakawa

发明人： Naoya Hasegawa ,  Yasuo Hayakawa

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B5/40 ,  G11B2005/3996

摘要： A current limiting layer including a mixture of a conductive portion and an insulating portion is provided on the side (upper side) of a free magnetic layer which a sensing current reaches. This can decrease the effective element area while maintaining the large optical element area. Therefore, a magnetic sensing element can easily be formed by using a photolithography technique having the same degree of accuracy as a conventional technique, and a CPP type magnetic sensing element having high reproduced output can be manufactured.

摘要翻译： 在传感电流达到的自由磁性层的一侧（上侧）上设置包括导电部分和绝缘部分的混合物的限流层。 这可以在保持大的光学元件面积的同时减小有效元件面积。 因此，通过使用与常规技术相同的精度的光刻技术可以容易地形成磁感测元件，并且可以制造具有高再现输出的CPP型磁感测元件。