专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US06731474B2 Thin film magnetic head and method of manufacturing the same 失效
标题翻译：薄膜磁头及其制造方法
公开(公告)号：US06731474B2
公开(公告)日：2004-05-04
申请号：US09991994
申请日：2001-11-26
申请人： Koichi Terunuma , Ken-ichi Takano , Noriyuki Ito
发明人： Koichi Terunuma , Ken-ichi Takano , Noriyuki Ito
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/11 , G11B5/3143 , G11B5/3903 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： Provided are a thin film magnetic head and a method of manufacturing the same, which is capable of high density recording and obtaining stable output. The thin film magnetic head includes an MR film sandwiched in between first and second shield layers. The first shield layer includes an inner layer, a magnetization stabilizing layer, an underlayer, and an outer layer laminated in order from the MR film. The second shield layer includes an inner layer, a magnetization stabilizing layer, an isolating layer, and an outer layer laminated in order from the MR film. The magnetization stabilizing layers are formed of antiferromagnetic material, so as to control the direction of magnetization of the inner layers.
摘要翻译：提供一种薄膜磁头及其制造方法，其能够进行高密度记录并获得稳定的输出。薄膜磁头包括夹在第一和第二屏蔽层之间的MR膜。第一屏蔽层包括从MR膜顺序层叠的内层，磁化稳定层，底层和外层。第二屏蔽层包括从MR膜顺序层叠的内层，磁化稳定层，隔离层和外层。磁化稳定层由反铁磁材料形成，以便控制内层的磁化方向。

22. 发明授权

US6137652A Thin film magnetic head with separated yoke and pole tips 有权
标题翻译：薄膜磁头与分离的轭和极尖
公开(公告)号：US6137652A
公开(公告)日：2000-10-24
申请号：US151602
申请日：1998-09-11
申请人： Joichiro Ezaki , Koichi Terunuma
发明人： Joichiro Ezaki , Koichi Terunuma
IPC分类号： G11B5/012 , G11B5/31 , G11B5/39 , G11B5/187
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/313 , G11B5/012
摘要： The present invention relates to an improvement in the write pole structure at a thin film magnetic head. At a write element, a gap film is provided between a first pole portion and a second pole portion. The first pole portion includes a second magnetic film adjacent the gap film and a first magnetic film adjacent the second magnetic film. The second pole portion includes a third magnetic film and a fourth magnetic film. The third magnetic film is provided adjacent to the gap film. The fourth magnetic film is provided adjacent to the third magnetic film. The surface of the fourth magnetic film facing opposite the medium is set within a width W21 of the third magnetic film in the direction of the tracks at its surface facing opposite the medium. In other words, the width W21 of the third magnetic film at the surface facing opposite the medium and a width W22 of the fourth magnetic film at its surface facing opposite the medium satisfy a relationship expressed as W22.ltoreq.W21. Thus, unnecessary magnetic recording occurring due to leaked magnetic field is prevented.
摘要翻译：本发明涉及一种在薄膜磁头上的写极结构的改进。在写入元件处，间隔膜设置在第一极部分和第二极部分之间。第一极部包括与间隙膜相邻的第二磁性膜和与第二磁性膜相邻的第一磁性膜。第二极部包括第三磁性膜和第四磁性膜。第三磁性膜邻近间隙膜设置。第四磁性膜设置成与第三磁性膜相邻。面向相对介质的第四磁性膜的表面被设置在第三磁性膜的宽度W 21之内，在与表面相对的介质的表面上，轨道的方向。换句话说，与介质相对的表面处的第三磁性膜的宽度W21和第四磁性膜在与介质相对的表面的宽度W22满足表示为W22

23. 发明授权

US5978184A Magnetoresistive effect element and thin film magnetic head with the element 失效
标题翻译：磁阻效应元件和薄膜磁头与元件
公开(公告)号：US5978184A
公开(公告)日：1999-11-02
申请号：US84355
申请日：1998-05-27
申请人： Koichi Terunuma
发明人： Koichi Terunuma
IPC分类号： G11B5/187 , G11B5/31 , G11B5/39
CPC分类号： G11B5/3993 , G11B5/1871 , G11B5/3163
摘要： A MR element includes a MR layer with a strip shape extending in a track width direction. The MR layer has a surface located at a front end edge of the layer, to be opposed to a magnetic medium, and a tapered portion located at a rear end edge of the layer. In order to define the height of the MR layer, a length of the tapered portion along a direction perpendicular to the track width direction (L) is determined to substantially 1/5 or less, preferably 1/10 or less of a distance between the front end edge and the rear end edge of the MR layer (h.sub.MR).
摘要翻译： MR元件包括具有在轨道宽度方向上延伸的带状的MR层。 MR层具有位于该层的前端边缘处的与磁介质相对的表面和位于该层的后端边缘处的锥形部分。为了限定MR层的高度，锥形部分沿着与轨道宽度方向（L）垂直的方向的长度确定为基本上+ E，fra 1/5 + EE或更小，优选+ E，fra 1/10 + EE或更小的MR层的前端边缘和后端边缘之间的距离（hMR）。

24. 发明授权

US5558944A Magnetic head and a process for production thereof 失效
标题翻译：磁头及其制造方法
公开(公告)号：US5558944A
公开(公告)日：1996-09-24
申请号：US285530
申请日：1994-08-04
申请人： Koichi Terunuma
发明人： Koichi Terunuma
IPC分类号： G11B5/187 , H01F10/30 , G11B5/235
CPC分类号： H01F10/30 , G11B5/1878 , Y10S428/928 , Y10T428/12465 , Y10T428/12542
摘要： The improved metal-in,gap magnetic head has a thin ferromagnetic metal film and a gap film superposed on an oxide substrate in that order and an intermediate film made of a nonmagnetic metal or a semiconductor is formed either in the space between the oxide substrate and the ferromagnetic film or between the ferromagnetic film and the gap film or in both spaces and then heat treated to provide such a profile that the element forming the intermediate film is of high concentration at the interface between the ferromagnetic film and the oxide substrate or the gap whereas the elements is of low concentration and distributed in a substantially uniform and continuous manner throughout the interior of the ferromagnetic film. The ferromagnetic film is formed preferably of an Fe-Al-Si (Sendust) alloy, an Fe-M-N alloy or an Fe-M-C alloy (M=Zr, Ta, Nb, Hf, etc.). The intermediate film which contributes corrosion resistance is made preferably of at least one of Cr, Al and Si, with its concentration being preferably from 50 at % to less than 100 at % at the interface between the ferromagnetic film and the oxide substrate or the gap film but from 0.5 at % to 10 at % within the ferromagnetic film. To insure that the element which forms the intermediate film is distributed uniformly and continuously within the ferromagnetic film, the intermediate film is preferably heat treated at 500.degree. to 700.degree. C. for a period of 5 to 120 min.
摘要翻译：改进的金属间隙磁头具有薄的铁磁性金属膜和间隔膜，其依次叠置在氧化物基板上，并且由非磁性金属或半导体制成的中间膜形成在氧化物基板和铁磁膜或铁磁膜和间隙膜之间或在两个空间中，然后进行热处理，以提供形成中间膜的元件在铁磁膜和氧化物衬底之间的界面处具有高浓度的轮廓或间隙而这些元件是低浓度的并且以大致均匀且连续的方式分布在铁磁膜的整个内部。铁磁膜优选由Fe-Al-Si（Sendust）合金，Fe-M-N合金或Fe-M-C合金（M = Zr，Ta，Nb，Hf等）形成。提供耐腐蚀性的中间膜优选由Cr，Al和Si中的至少一种制成，其浓度优选在铁磁膜和氧化物基板之间的界面处的50at％至小于100at％但在铁磁膜内为0.5at％至10at％。为了确保形成中间膜的元件在铁磁膜内均匀连续分布，中间膜优选在500〜700℃下热处理5〜120分钟。

25. 发明授权

US07311850B2 Method of forming patterned thin film and method of fabricating micro device 失效
标题翻译：形成图案化薄膜的方法和制造微器件的方法
公开(公告)号：US07311850B2
公开(公告)日：2007-12-25
申请号：US10271590
申请日：2002-10-17
申请人： Akifumi Kamijima , Yoichi Ishida , Koichi Terunuma
发明人： Akifumi Kamijima , Yoichi Ishida , Koichi Terunuma
IPC分类号： H01L21/027
CPC分类号： B82Y25/00 , B82Y40/00 , G11B5/3116 , G11B5/3163 , G11B5/3967 , H01F41/308 , Y10S438/947
摘要： In a method of forming a patterned thin film, first, an etching stopper film and a film to be patterned are formed in this order on a base layer. Next, a patterned first film is formed on the film to be patterned. Next, a second film is formed over an entire surface on top of the film to be patterned and the first film. Then, by removing the first film, an etching mask is obtained from the second film formed on the film to be patterned. The film to be patterned is selectively etched through dry etching using the etching mask. A patterned thin film having a groove is thereby obtained.
摘要翻译：在形成图案化薄膜的方法中，首先，在基底层上依次形成蚀刻停止膜和待图案化的膜。接下来，在待图案化的膜上形成图案化的第一膜。接下来，在待图案化的膜的顶部和第一膜上的整个表面上形成第二膜。然后，通过去除第一膜，从形成在待图案化的膜上的第二膜获得蚀刻掩模。通过使用蚀刻掩模的干蚀刻来选择性地蚀刻待图案化的膜。由此获得具有凹槽的图案化薄膜。

26. 发明申请

US20070253106A1 Magnetic head apparatus and magnetic recording and reproducing apparatus 有权
标题翻译：磁头装置和磁记录和再现装置
公开(公告)号：US20070253106A1
公开(公告)日：2007-11-01
申请号：US11790643
申请日：2007-04-26
申请人： Isamu Sato , Yoshikazu Soeno , Koichi Terunuma , Tetsuya Roppongi , Hiroshi Ikeda
发明人： Isamu Sato , Yoshikazu Soeno , Koichi Terunuma , Tetsuya Roppongi , Hiroshi Ikeda
IPC分类号： G11B5/147 , G11B5/17
CPC分类号： G11B5/1278 , G11B5/02 , G11B5/17 , G11B5/3123 , G11B5/65 , G11B2005/0005 , G11B2005/0029
摘要： A magnetic head apparatus is provided which is capable of recording data in a recoding layer having high coercive force with high accuracy without heating. A magnetic recording and reproducing apparatus is also provided which has the magnetic head apparatus. A recording head has: a main magnetic pole; a recording-side front-end shield (a return magnetic pole); a recording-side rear-end shield (a return magnetic pole); a main coil for generating a perpendicular recording magnetic field at the main magnetic pole; and an auxiliary coil for generating a longitudinal alternating current magnetic field having a frequency in the microwave band at the main magnetic pole.
摘要翻译：提供一种能够在没有加热的情况下以高精度在高矫顽力的记录层中记录数据的磁头装置。还提供一种具有磁头装置的磁记录和重放装置。记录头具有：主磁极; 记录侧前端屏蔽（返回磁极）; 记录侧后端屏蔽（返回磁极）; 用于在主磁极处产生垂直记录磁场的主线圈; 以及用于产生在主磁极处具有微波频带的频率的纵向交流磁场的辅助线圈。

27. 发明授权

US07221546B2 Thin film magnetic head, head gimbal assembly, and hard disk drive 失效
标题翻译：薄膜磁头，头万向节装配和硬盘驱动器
公开(公告)号：US07221546B2
公开(公告)日：2007-05-22
申请号：US10833162
申请日：2004-04-28
申请人： Koichi Terunuma , Koji Shimazawa , Yoshihiro Tsuchiya
发明人： Koichi Terunuma , Koji Shimazawa , Yoshihiro Tsuchiya
IPC分类号： G11B5/39 , G11B5/127
CPC分类号： G11B5/31 , Y10T29/49041 , Y10T29/49046
摘要： A longitudinal bias magnetic field control layer applies a counter bias magnetic field to a soft magnetic layer that is antiparallel (in opposite direction) to a longitudinal bias magnetic field. A magnitude of the counter bias magnetic field applied to the soft magnetic layer by the longitudinal bias magnetic field control layer is set smaller than that of the longitudinal bias magnetic field at a track center portion of the soft magnetic layer applied by a pair of bias magnetic field applying layers. A substantial longitudinal bias magnetic field is substantially applied to the soft magnetic layer in the same direction as that of the longitudinal bias magnetic field, and a magnitude of the substantial longitudinal bias magnetic field is maximum at both end portions of the soft magnetic layer and is weakened at the center portion of the soft magnetic layer.
摘要翻译：纵向偏置磁场控制层将反偏置磁场施加到与纵向偏置磁场反平行（相反方向）的软磁性层。通过纵向偏置磁场控制层施加到软磁性层的反向偏置磁场的大小被设定为小于通过一对偏置磁铁施加的软磁性层的轨道中心部分处的纵向偏置磁场的大小场施加层。基本的纵向偏置磁场基本上与纵向偏置磁场的方向相同地施加到软磁性层，并且在软磁性层的两个端部处，基本的纵向偏置磁场的大小最大，并且是在软磁性层的中心部分变弱。

28. 发明申请

US20070041124A1 Narrow track CPP head with bias cancellation 有权
标题翻译：窄轨CPP头偏置消除
公开(公告)号：US20070041124A1
公开(公告)日：2007-02-22
申请号：US11588564
申请日：2006-10-27
申请人： Jei-Wei Chang , Koichi Terunuma , Youfeng Zheng , Kochan Ju
发明人： Jei-Wei Chang , Koichi Terunuma , Youfeng Zheng , Kochan Ju
IPC分类号： G11B5/09
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3932 , G11B2005/3996 , Y10T29/49021 , Y10T29/49032 , Y10T29/49039 , Y10T29/49041 , Y10T29/49043 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： The problem of increased edge sensitivity associated with the reduction of the spacing between bias magnets in a CPP head has been solved by limiting the width of the bias cancellation layer and by adding an extra layer of insulation to ensure that current through the device flows only through its central area, thereby minimizing its edge reading sensitivity.
摘要翻译：通过限制偏置消除层的宽度并添加额外的绝缘层来解决与CPP头中的偏置磁体之间的间隔减小相关联的增加的边缘灵敏度的问题，以确保通过器件的电流仅流过其中心区域，从而最小化其边缘读取灵敏度。

29. 发明授权

US07126794B2 Thin film magnetic head including heat dissipation, method of manufacturing the same, and magnetic disk drive 有权
标题翻译：薄膜磁头包括散热，制造方法和磁盘驱动器
公开(公告)号：US07126794B2
公开(公告)日：2006-10-24
申请号：US10408569
申请日：2003-04-08
申请人： Yoshihiro Kudo , Koichi Terunuma
发明人： Yoshihiro Kudo , Koichi Terunuma
IPC分类号： G11B5/39
CPC分类号： G11B5/313 , G11B5/3106 , G11B5/3116 , G11B5/3133 , G11B5/3903 , G11B5/40
摘要： Provided are a thin film magnetic head capable of inhibiting an excessive temperature rise while reducing its size in accordance with a higher recording density, and obtaining a higher read output, a method of manufacturing the same, and a magnetic disk drive using the thin film magnetic head. A heat dissipation layer for transferring heat generated in a magnetic transducer film to outside is disposed adjacent to the magnetic transducer film on a side, the side being opposite to a side facing a recording medium. In a gap layer for electrically insulating between the magnetic transducer film and a pair of shield layers, a portion of the gap layer in contact with an end surface of the magnetic transducer film on a side, the side being opposite to a side facing the recording medium is formed so as to have a thin thickness ranging from 2 nm to 30 nm inclusive. Thereby, the heat generated in the magnetic transducer film can be more effectively dissipated than previously possible, and a temperature rise can be inhibited. Therefore, an increase in electrical resistance can be inhibited, and a higher read output can be obtained.
摘要翻译：提供一种薄膜磁头，其能够根据较高的记录密度减小其尺寸，并且获得更高的读取输出，其制造方法和使用薄膜磁性的磁盘驱动器能够抑制过度的温度升高头。将在磁换能器膜中产生的热量传递到外部的散热层设置在与磁记录介质相对的一侧相对的一侧的磁换能器膜附近。在用于在磁换能器膜和一对屏蔽层之间电绝缘的间隙层中，间隙层的与一侧的磁换能器膜的端面接触的一部分与面向记录的一侧相对的一侧介质形成为具有范围从2nm到30nm的薄的厚度。由此，能够比先前可能地更有效地消耗在磁换能膜中产生的热量，能够抑制升温。因此，可以抑制电阻的增加，并且可以获得更高的读取输出。

30. 发明授权

US07088560B2 Thin film magnetic head including a heat dissipation layer, method of manufacturing the same and magnetic disk drive 有权
标题翻译：薄膜磁头包括散热层，其制造方法和磁盘驱动器
公开(公告)号：US07088560B2
公开(公告)日：2006-08-08
申请号：US11239408
申请日：2005-09-30
申请人： Yoshihiro Kudo , Koichi Terunuma
发明人： Yoshihiro Kudo , Koichi Terunuma
IPC分类号： G11B5/33
CPC分类号： G11B5/313 , G11B5/3106 , G11B5/3116 , G11B5/3133 , G11B5/3903 , G11B5/40
摘要： Provided are a thin film magnetic head capable of inhibiting an excessive temperature rise while reducing its size in accordance with a higher recording density, and obtaining a higher read output, a method of manufacturing the same, and a magnetic disk drive using the thin film magnetic head. A heat dissipation layer for transferring heat generated in a magnetic transducer film to outside is disposed adjacent to the magnetic transducer film on a side, the side being opposite to a side facing a recording medium. In a gap layer for electrically insulating between the magnetic transducer film and a pair of shield layers, a portion of the gap layer in contact with an end surface of the magnetic transducer film on a side, the side being opposite to a side facing the recording medium is formed so as to have a thin thickness ranging from 2 nm to 30 nm inclusive. Thereby, the heat generated in the magnetic transducer film can be more effectively dissipated than previously possible, and a temperature rise can be inhibited. Therefore, an increase in electrical resistance can be inhibited, and a higher read output can be obtained.
摘要翻译：提供一种薄膜磁头，其能够根据较高的记录密度减小其尺寸，并且获得更高的读取输出，其制造方法和使用薄膜磁性的磁盘驱动器能够抑制过度的温度升高头。将在磁换能器膜中产生的热量传递到外部的散热层设置在与磁记录介质相对的一侧相对的一侧的磁换能器膜附近。在用于在磁换能器膜和一对屏蔽层之间电绝缘的间隙层中，间隙层的与一侧的磁换能器膜的端面接触的一部分与面向记录的一侧相对的一侧介质形成为具有范围从2nm到30nm的薄的厚度。由此，能够比先前可能地更有效地消耗在磁换能膜中产生的热量，能够抑制升温。因此，可以抑制电阻的增加，并且可以获得更高的读取输出。

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