专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06822831B2 Magnetic thin film, magnetic thin film forming method, and recording head 失效
标题翻译：磁性薄膜，磁性薄膜形成方法和记录头
公开(公告)号：US06822831B2
公开(公告)日：2004-11-23
申请号：US10074185
申请日：2002-02-12
申请人： Shoji Ikeda , Yuji Uehara , Ikuya Tagawa , Naoki Takeguchi , Masahiro Kakehi
发明人： Shoji Ikeda , Yuji Uehara , Ikuya Tagawa , Naoki Takeguchi , Masahiro Kakehi
IPC分类号： G11B5147
CPC分类号： H01F10/147 , G11B5/3109 , H01F10/131 , H01F10/138 , H01F10/265 , Y10S428/90
摘要： An object of the present invention is to provide a recording head having a magnetic pole simultaneously possessing a high saturation magnetic flux density, a high permeability and a high electric resistivity, and the magnetic pole of the recording head is a polycrystalline film comprising Fe whose content is not less than 57.5 atomic % and not more than 94.5 atomic %; one or more kinds of elements selected from the element group of Al, B, Ga, Si, Ge, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and Rh, whose whole content is not less than 1 atomic % and not more than 15 atomic %; N whose content is not less than 0.5 atomic % and not more than 10 atomic %; and O whose content is not less than 1.5 atomic % and not more than 22.5 atomic %.
摘要翻译：本发明的目的是提供一种具有同时具有高饱和磁通密度，高磁导率和高电阻率的磁极的记录头，记录头的磁极是包含Fe的多晶膜，其含量不小于57.5原子％且不大于94.5原子％; 选自Al，B，Ga，Si，Ge，Y，Ti，Zr，Hf，V，Nb，Ta，Cr，Mo，W和Rh的元素组中的一种或多种元素，其全部含量不少于 1原子％以上15原子％以下。 N含量不小于0.5原子％且不大于10原子％; 其含量不小于1.5原子％且不大于22.5原子％。

2. 发明授权

US06813824B2 Method of producing thin film magnetic head 失效
标题翻译：制造薄膜磁头的方法
公开(公告)号：US06813824B2
公开(公告)日：2004-11-09
申请号：US10328542
申请日：2002-12-23
申请人： Minoru Hasegawa , Yoshinori Ohtsuka , Yuji Uehara , Takashi Sekikawa , Hiroshi Maeda , Masahiro Kakehi , Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida
发明人： Minoru Hasegawa , Yoshinori Ohtsuka , Yuji Uehara , Takashi Sekikawa , Hiroshi Maeda , Masahiro Kakehi , Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida
IPC分类号： G11B5127
CPC分类号： G11B5/313 , G11B5/17 , G11B5/3163 , Y10T29/49034 , Y10T29/49041 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T29/49073
摘要： A liquid resist is introduced between adjacent conductive lines of a coil pattern girdling around a magnetic core piece. When the liquid resist is cured, an insulating resin filler can be fixed between the adjacent conductive lines of the coil pattern. An insulating metallic layer is formed to extend over the insulting resin filler and the conductive lines of the coil pattern. Thereafter, the insulating metallic layer is subjected to a flattening grinding treatment until at least a part of the conductive line is exposed at a flattened surface. Of the resist, of a higher fluidity, penetrates in every hole and corner between the adjacent conductive lines, the gap defined between the adjacent conductive lines is fully filled with the insulating material. No voids remain in the gap. The conductive line of the coil can be reliably prevented from corrosion or oxidation. Moreover, a relatively brittle of fragile insulating resin filler is reliably prevented from being subjected to the flattening.

3. 发明授权

US06567239B1 Thin film magnetic head including a coil insulating resin filler and an insulating metallic layer covering at least partly the insulating resin filler on a datum plane 失效
标题翻译：薄膜磁头包括线圈绝缘树脂填料和至少部分地覆盖基准平面上的绝缘树脂填料的绝缘金属层
公开(公告)号：US06567239B1
公开(公告)日：2003-05-20
申请号：US09716345
申请日：2000-11-20
申请人： Minoru Hasegawa , Yoshinori Ohtsuka , Yuji Uehara , Takashi Sekikawa , Hiroshi Maeda , Masahiro Kakehi , Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida
发明人： Minoru Hasegawa , Yoshinori Ohtsuka , Yuji Uehara , Takashi Sekikawa , Hiroshi Maeda , Masahiro Kakehi , Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida
IPC分类号： G11B5147
CPC分类号： G11B5/313 , G11B5/17 , G11B5/3163 , Y10T29/49034 , Y10T29/49041 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T29/49073
摘要： A liquid resist is introduced between adjacent conductive lines of a coil pattern girdling around a magnetic core piece. When the liquid resist is cured, an insulating resin filler can be fixed between the adjacent conductive lines of the coil pattern. An insulating metallic layer is formed to extend over the insulting resin filler and the conductive lines of the coil pattern. Thereafter, the insulating metallic layer is subjected to a flattening grinding treatment until at least a part of the conductive line is exposed at a flattened surface. Since the liquid of the resist, of a higher fluidity, penetrates in every hole and corner between the adjacent conductive lines, the gap defined between the adjacent conductive lines is fully filled with the insulating material. No voids remain in the gap. The conductive line of the coil can be reliably prevented from corrosion or oxidation. Moreover, a relatively brittle of fragile insulating resin filler is reliably prevented from being subjected to the flattening grinding treatment.
摘要翻译：在围绕磁芯片的线圈图案的相邻导线之间引入液体抗蚀剂。当液体抗蚀剂固化时，可以在线圈图案的相邻导电线之间固定绝缘树脂填料。绝缘金属层形成为在绝缘树脂填料和线圈图案的导线上延伸。此后，对绝缘金属层进行平坦化研磨处理，直到导电线的至少一部分在平坦表面露出。由于具有较高流动性的抗蚀剂的液体渗透在相邻导电线之间的每个孔和拐角处，所以相邻导电线之间限定的间隙被绝缘材料完全充满。间隙中没有空隙。可以可靠地防止线圈的导线腐蚀或氧化。此外，可靠地防止相对脆弱的脆性绝缘树脂填料进行平坦化研磨处理。

4. 发明授权

US06970324B2 Thin film head with nickel-iron alloy non-magnetic substratum between non-magnetic gap layer and upper magnetic pole layer 失效
标题翻译：薄膜头与镍 - 铁合金非磁性基底之间的非磁隙层和上磁极层之间
公开(公告)号：US06970324B2
公开(公告)日：2005-11-29
申请号：US10299177
申请日：2002-11-19
申请人： Shoji Ikeda , Takayuki Kubomiya , Ikuya Tagawa , Yuji Uehara
发明人： Shoji Ikeda , Takayuki Kubomiya , Ikuya Tagawa , Yuji Uehara
IPC分类号： G11B5/31 , G11B5/39 , H01F10/16 , H01F10/26
CPC分类号： H01F10/26 , G11B5/3109 , G11B5/313 , G11B5/3967 , H01F10/16
摘要： A soft magnetic film includes a ferromagnetic layer. The ferromagnetic layer is laid over a non-magnetic substructure including ferromagnetic atoms. The uniaxial magnetic anisotropy may be established in the ferromagnetic layer. Since a magnetic property is not required in the substructure under the ferromagnetic layer, the soft magnetic film of this type may be utilized for purposes of wider variations.
摘要翻译：软磁性膜包括铁磁层。铁磁层铺设在包括铁磁原子的非磁性子结构之上。可以在铁磁层中建立单轴磁各向异性。由于在铁磁层下的亚结构中不需要磁性，所以这种类型的软磁膜可以用于较宽的变化。

5. 发明授权

US06828046B2 Soft magnetic film of FeCoMO having a high saturation flux density, a moderate soft magnetism and a uniaxial magnetic anisotropy 失效
标题翻译：具有高饱和磁通密度，中等软磁性和单轴磁各向异性的FeCoMO软磁膜
公开(公告)号：US06828046B2
公开(公告)日：2004-12-07
申请号：US09960419
申请日：2001-09-21
申请人： Shoji Ikeda , Ikuya Tagawa , Yuji Uehara , Yoshinori Ohtsuka
发明人： Shoji Ikeda , Ikuya Tagawa , Yuji Uehara , Yoshinori Ohtsuka
IPC分类号： G11B533
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3109 , G11B5/3153 , G11B5/3163 , G11B5/3967 , G11B2005/3996 , H01F10/132 , Y10T428/115 , Y10T428/1171 , Y10T428/12465 , Y10T428/12861 , Y10T428/12951
摘要： A soft magnetic film comprising Fe, Co, a metallic element (M), and oxygen (O) is provided. The soft magnetic film is represented by a composition formula of (Fe1-aCoa)xMyOz. The metallic element (M) is one selected from a group consisting of Al, B, Ga, Si, Ge, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Rh, Ru, Ni, Pd and Pt, or is an alloy composed of at least two selected from this group. The composition formula fulfills the following conditions: a=0.05-0.65; y=0.2-9 at %, z=1-12 at %, and y+z=
摘要翻译：提供了包含Fe，Co，金属元素（M）和氧（O）的软磁性膜。软磁性膜由（Fe1-aCoa）xMyOz的组成式表示。金属元素（M）是选自Al，B，Ga，Si，Ge，Y，Ti，Zr，Hf，V，Nb，Ta，Cr，Mo，W，Rh，Ru，Ni， Pd和Pt，或由选自该组的至少两种组成的合金。组成式满足以下条件：a = 0.05-0.65; y = 0.2-9at％，z = 1-12at％，y + z = <15at％; x =（100-y-z）at％。以bcc相为主相，形成晶体结构。 bcc相的晶粒直径不超过50nm。 bcc相包括金属元素（M）和氧（O）的固溶体。

6. 发明授权

US06510024B2 Magnetic head and method of manufacturing the same 失效
标题翻译：磁头及其制造方法
公开(公告)号：US06510024B2
公开(公告)日：2003-01-21
申请号：US09906910
申请日：2001-07-17
申请人： Yoshinori Otsuka , Ikuya Tagawa , Yukinori Ikegawa , Tomoko Kutsuzawa , Yuji Uehara , Minoru Hasegawa
发明人： Yoshinori Otsuka , Ikuya Tagawa , Yukinori Ikegawa , Tomoko Kutsuzawa , Yuji Uehara , Minoru Hasegawa
IPC分类号： G11B5147
CPC分类号： G11B5/3967 , G11B5/1871 , G11B5/3116 , G11B5/3163
摘要： There is provided a magnetic head which is able to enhance the magnetic field intensity to be generated by shaping a magnetic pole, and a method of manufacturing the same. The method of manufacturing a magnetic head, comprising the steps of forming a lower recording magnetic pole and an upper recording magnetic pole, and trimming partially an elongated pole in the vicinity of a floating surface of the upper recording magnetic pole and an upper portion of the lower recording magnetic pole positioned below and around the elongated pole by an ion milling method, wherein a core width of the elongated pole can be adjusted.
摘要翻译：提供一种能够增强通过使磁极成形而产生的磁场强度的磁头及其制造方法。一种制造磁头的方法，包括以下步骤：形成下记录磁极和上记录磁极，并且在上记录磁极的浮动表面附近部分地修剪细长磁极和下部记录磁极通过离子铣削方法定位在细长杆的下方和周围，其中可以调节细长杆的芯宽度。

7. 发明授权

US06507448B2 Information recording device having a function of erasing information in a standby state 失效
标题翻译：具有在待机状态下擦除信息的功能的信息记录装置
公开(公告)号：US06507448B2
公开(公告)日：2003-01-14
申请号：US09736826
申请日：2000-12-14
申请人： Syuji Nishida , Ikuya Tagawa , Yuji Uehara
发明人： Syuji Nishida , Ikuya Tagawa , Yuji Uehara
IPC分类号： G11B503
CPC分类号： G11B5/02 , G11B5/012 , G11B5/024 , G11B5/09 , G11B19/02 , G11B2005/0013
摘要： An information recording device which records information at a high recording density such that an error rate is reduced. In particular, an information recording device that includes a recording head, arranged near or to be close to the recording medium, for applying magnetic fields to the small regions when the recording head relatively moves with respect to the recording medium to pass on the small regions of the recording medium, and a recording head controller for controlling the recording head to cause the recording head to apply magnetic fields to the small regions in a free region of the recording medium in a standby state in which at least information is not recorded on the recording medium to uniform the directions of magnetization of the small regions so as to erase the information in the predetermined free region.
摘要翻译：一种以高记录密度记录信息以使错误率降低的信息记录装置。具体地说，一种信息记录装置，包括靠近或靠近记录介质的记录头，用于当记录头相对于记录介质相对移动以在小区域上时向小区域施加磁场以及记录头控制器，用于控制记录头，以使得记录头在至少信息未被记录在记录介质的待机状态的待机状态下向记录介质的自由区域中的小区域施加磁场记录介质以使小区域的磁化方向均匀，从而擦除预定自由区域中的信息。

8. 发明授权

US06282776B1 Magnetic head and method of manufacturing the same 失效
公开(公告)号：US06282776B1
公开(公告)日：2001-09-04
申请号：US09199722
申请日：1998-11-25
申请人： Yoshinori Otsuka , Ikuya Tagawa , Yukinori Ikegawa , Tomoko Kutsuzawa , Yuji Uehara , Minoru Hasegawa
发明人： Yoshinori Otsuka , Ikuya Tagawa , Yukinori Ikegawa , Tomoko Kutsuzawa , Yuji Uehara , Minoru Hasegawa
IPC分类号： G11B5129
CPC分类号： G11B5/3967 , G11B5/1871 , G11B5/3116 , G11B5/3163 , Y10T29/49044 , Y10T29/49046
摘要： There is provided a magnetic head which is able to enhance the magnetic field intensity to be generated by shaping a magnetic pole, and a method of manufacturing the same. The method of manufacturing a magnetic head, comprising the steps of forming a lower recording magnetic pole and an upper recording magnetic pole, and trimming partially an elongated pole in the vicinity of a floating surface of the upper recording magnetic pole and an upper portion of the lower recording magnetic pole positioned below and around the elongated pole by an ion milling method, wherein a core width of the elongated pole can be adjusted.

9. 发明授权

US6094325A Spin valve head reducing barkhausen noise 失效
标题翻译：旋转阀头减少巴克豪森噪音
公开(公告)号：US6094325A
公开(公告)日：2000-07-25
申请号：US111035
申请日：1998-07-07
申请人： Ikuya Tagawa , Kenichiro Yamada , Yuji Uehara
发明人： Ikuya Tagawa , Kenichiro Yamada , Yuji Uehara
IPC分类号： G11B5/012 , G11B5/31 , G11B5/39 , H01F10/32
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3903 , G11B5/3932 , H01F10/3268 , G11B2005/3996 , G11B5/3163 , G11B5/398
摘要： A spin valve head comprises a spin valve film having at least a pinned magnetic layer, a nonmagnetic metal layer, and a free magnetic layaer. The spin valve head further comprises a hard magnetic layer for controlling magnetic domains of the free magnetic layer, and electrode elements for supplying a sense current to the spin valve film, wherein the hard magnetic layer and the free magnetic layer are positioned not to overlap an orthographic projection of the hard magnetic layer in a thickness direction of the spin valve film with an orthographic projection of the free magnetic layer in the thickness direction of the spin valve film. According to such configuration, a single magnetic domain structure which does not generate a reverse magnetic field region throughout the overall surface of the free magnetic layer can be obtained, so that the hysteresis phenomenon is not caused in the spin valve head output. Therefore, the output with no noise can be derived.
摘要翻译：自旋阀头包括至少具有钉扎磁性层，非磁性金属层和自由磁性层的自旋阀膜。自旋阀头还包括用于控制自由磁性层的磁畴的硬磁性层和用于向自旋阀膜提供感测电流的电极元件，其中硬磁性层和自由磁性层被定位成不与在自旋阀膜的厚度方向上的自由磁性层的正投影，在自旋阀膜的厚度方向上对硬磁性层进行正投影。根据这种结构，可以获得在自由磁性层的整个表面上不产生反向磁场区域的单个磁畴结构，从而不会在自旋阀头输出中产生滞后现象。因此，可以得出无噪声的输出。

10. 发明授权

US6087026A Magnetoresistive head and magnetic read/write device 失效
标题翻译：磁阻磁头和磁读/写装置
公开(公告)号：US6087026A
公开(公告)日：2000-07-11
申请号：US957188
申请日：1997-10-24
申请人： Masahiro Kakehi , Yuji Uehara
发明人： Masahiro Kakehi , Yuji Uehara
IPC分类号： G11B5/39 , H01F10/08 , H01F10/30 , H01F10/32 , H01L43/08 , G11B5/66
CPC分类号： G11B5/3932 , Y10S428/90 , Y10T428/1121
摘要： A MR head employs a biasing soft magnetic film of a FeXN-based alloy which undergoes no change in the direction of its axis of easy magnetization even when subject to heat treatment. The MR head has an anisotropic magnetic field size of 10 Oe or greater, and electrical resistance p of 70 .mu..OMEGA.cm or greater, and a saturation flux density Bs of 1 T or greater. The direction of the axis of easy magnetization of the biasing soft magnetic film is oriented perpendicular to the direction of sense current, and the direction of the axis of easy magnetization of the MR film is oriented parallel to the sense current direction.
摘要翻译： MR头采用FeXN基合金的偏压软磁膜，即使在进行热处理时也不会发生易磁化轴方向的变化。 MR磁头的各向异性磁场尺寸为10Oe以上，电阻p为70μΩ/ cm以上，饱和磁通密度Bs为1T以上。偏置软磁膜的容易磁化轴的方向与感应电流的方向垂直，MR膜的易磁化轴方向平行于感应电流方向。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式