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1.发明授权Apparatus and thin film magnetic head with magnetic membrane layers of different resistivity 失效具有不同电阻率的磁膜层的设备和薄膜磁头
公开(公告)号：US06034847A
公开(公告)日：2000-03-07
申请号：US992089
申请日：1997-12-17
申请人： Matahiro Komuro , Tomohiro Okada , Masaaki Sano , Moriaki Fuyama , Hiroshi Fukui , Katsumi Hoshino , Takashi Kawabe , Yohji Maruyama , Atsushi Nakamura , Miki Hara , Noboru Shimizu , Noboru Yoshida
发明人： Matahiro Komuro , Tomohiro Okada , Masaaki Sano , Moriaki Fuyama , Hiroshi Fukui , Katsumi Hoshino , Takashi Kawabe , Yohji Maruyama , Atsushi Nakamura , Miki Hara , Noboru Shimizu , Noboru Yoshida
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/312 , G11B5/3967 , G11B5/6005 , G11B2005/3996
摘要： In order to prevent degradation of the recording performance during radio frequency recording, and to provide a thin film magnetic head and a recording reproducing sectional pattern magnetic head which has a magnetic pole width less than 2 .mu.m and an ultra high density magnetic storage apparatus of 10 Gb/ in.sup.2 grade, a recording head is provided in which a lower part magnetic film serves as a shielding film of a reproducing selection, a non magnetic gap film is formed during formation of the upper part magnetic film and the lower part magnetic film, one part of the lower part magnetic film or the upper part magnetic film has a higher resistivity of more than 80 .mu..OMEGA.cm than other parts, the upper part magnetic film is formed by flame galvanizing, and a gap section of the lower part magnetic film or the upper part magnetic film has a convex shape.
摘要翻译： 为了防止在射频记录期间的记录性能的劣化，并且提供具有小于2μm的磁极宽度的薄膜磁头和记录再现部分图形磁头和超高密度磁存储装置 10Gb / in2级，提供了一种记录头，其中下部磁性膜用作再现选择的屏蔽膜，在形成上部磁性膜和下部磁性膜期间形成非磁隙膜， 下部磁性膜或上部磁性膜的一部分比其他部分具有高于80μm欧米伽cm的电阻率，上部磁性膜通过火焰镀锌形成，下部磁性膜的间隙部分 或上部磁性膜具有凸形状。
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2.发明授权Method of forming thin film magnetic recording head with narrow track width performing high density recording at high driving frequency 有权在高驱动频率下形成具有窄轨迹宽度的高密度记录的薄膜磁记录头的方法公开(公告)号：US06530141B2
公开(公告)日：2003-03-11
申请号：US09879974
申请日：2001-06-14
申请人： Matahiro Komuro , Tomohiro Okada , Moriaki Fuyama , Tetsuo Ito , Hiroshi Fukui , Yohji Maruyama , Miki Hara , Hisashi Takano
发明人： Matahiro Komuro , Tomohiro Okada , Moriaki Fuyama , Tetsuo Ito , Hiroshi Fukui , Yohji Maruyama , Miki Hara , Hisashi Takano
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3109 , G11B5/313 , G11B5/3143 , G11B5/3967 , G11B2005/3996 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/4906
摘要： A method of forming a thin film magnetic head, including forming a first magnetic layer, forming a second magnetic layer as a magnetic flux passage in combination with the first magnetic layer, and forming a laminate structure body between the first magnetic layer and the second magnetic layer. The forming of the laminate structure body includes forming a third magnetic layer, a fourth magnetic layer and a non-magnetic conductive layer between the third magnetic layer and the fourth magnetic layer, projecting the laminate structure body more toward an air bearing surface than a projection of the first magnetic layer and the second magnetic layer toward the air bearing surface, and providing the laminate structure body with a width which is smaller than a width of the first magnetic layer and the second magnetic layer.
摘要翻译： 一种形成薄膜磁头的方法，包括形成第一磁性层，与第一磁性层组合形成作为磁通量通道的第二磁性层，以及在第一磁性层和第二磁性层之间形成层叠结构体 层。 层压结构体的形成包括在第三磁性层和第四磁性层之间形成第三磁性层，第四磁性层和非磁性导电层，使叠层结构体朝向空气轴承表面突出地突出， 的第一磁性层和第二磁性层朝向空气轴承表面，并且为层叠结构体提供的宽度小于第一磁性层和第二磁性层的宽度。
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3.发明授权Thin film magnetic recording head with very narrow track width performing high density recording at high driving frequency 失效具有非常窄轨道宽度的薄膜磁记录头在高驱动频率下执行高密度记录
公开(公告)号：US06091582A
公开(公告)日：2000-07-18
申请号：US48985
申请日：1998-03-27
申请人： Matahiro Komuro , Tomohiro Okada , Moriaki Fuyama , Tetsuo Ito , Hiroshi Fukui , Yohji Maruyama , Miki Hara , Hisashi Takano
发明人： Matahiro Komuro , Tomohiro Okada , Moriaki Fuyama , Tetsuo Ito , Hiroshi Fukui , Yohji Maruyama , Miki Hara , Hisashi Takano
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3109 , G11B5/313 , G11B5/3143 , G11B5/3967 , G11B2005/3996 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/4906
摘要： A thin film magnetic head is providing for recording with less blur having a high recording magnetic field, for use in a recording/reproduction separation type magnetic head and a magnetic recording/reproducing apparatus. The thin film magnetic head, in which a gap film of a recording head and a magnetic film in contact with the gap film have the same track width, includes an upper magnetic film of the recording head and an upper shield film of a magnetic resistive film, each having a width wider than the track width, and a cross section parallel to the air bearing surface of the upper magnetic film is reduced at a position less than a gap depth from the air bearing surface. The thin film magnetic head has a coil conductor sandwiched by a first magnetic film and a fourth magnetic film, a second magnetic body magnetically connected to the first magnetic film, a third magnetic body magnetically connected to the fourth magnetic film, and a magnetic gap sandwiched by the second and third magnetic films, in which an insulating and non-magnetic single film in contact with the second and third magnetic films covers at least the first magnetic film.
摘要翻译： 薄膜磁头提供用于具有高记录磁场的较少模糊的记录，用于记录/再现分离型磁头和磁记录/再现装置。 其中记录头的间隙膜和与间隙膜接触的磁性膜具有相同的轨道宽度的薄膜磁头包括记录头的上部磁性膜和磁性电阻膜的上部屏蔽膜 各自具有比轨道宽度宽的宽度，并且平行于上部磁性膜的空气支承表面的横截面在比空气轴承表面小于间隙深度的位置处减小。 薄膜磁头具有由第一磁性膜和第四磁性膜夹持的线圈导体，与第一磁性膜磁性连接的第二磁性体，与第四磁性膜磁性连接的第三磁性体和夹在 通过第二和第三磁性膜，其中与第二和第三磁性膜接触的绝缘和非磁性单膜至少覆盖第一磁性膜。
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公开(公告)号：US6104574A
公开(公告)日：2000-08-15
申请号：US11838
申请日：1998-02-20
CPC分类号： G11B5/3967 , G11B5/187 , G11B5/312 , G11B5/3143 , G11B5/3109 , G11B5/3163 , G11B5/455
摘要： A leaking magnetic flux from a taper portion is canceled by utilizing an eddy current loss by using a magnetic head having a structure wherein at least a part of a magnetic pole constituting a magnetic path through a recording gap is sandwiched by conductive materials with respect to a track width direction, and a write blur quantity can be thus reduced. Further, magnetic saturation can be prevented by limiting a volume decrease at the distal end portion of the magnetic pole when the track width is reduced. Accordingly, the present invention can prevent magnetic saturation of the distal end portion of the magnetic pole resulting from the reduction of the width of the track of the recording head, can accomplish narrow-track recording by the recording head to a recording medium having high-coercive force and can reduce write blur. Further, the present invention can provide a narrow-track magnetic head capable of accomplishing a high-speed transfer, large-capacity magnetic recording system, and a magnetic memory apparatus using this magnetic head.
摘要翻译： PCT No.PCT / JP95 / 01667 Sec。 371日期：1998年2月20日 102（e）1998年2月20日PCT PCT 1995年8月23日PCT公布。 公开号WO97 / 08687 日期1997年3月6日通过使用具有以下结构的磁头利用涡流损耗来消除来自锥形部分的泄漏磁通，其中构成通过记录间隙的磁路的至少一部分磁极被夹持导电 可以减少相对于轨道宽度方向的材料和写入模糊量。 此外，当磁道宽度减小时，通过限制磁极的远端部分的体积减小可以防止磁饱和。 因此，本发明可以防止由于记录头的轨道的宽度的减小导致的磁极的远端部分的磁饱和，可以通过记录头实现到具有高记录头的记录介质的窄轨记录， 矫顽力可以减少书写模糊。 此外，本发明可以提供一种能够实现高速传输，大容量磁记录系统的磁道磁头和使用该磁头的磁存储装置。
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5.发明授权公开(公告)号：US07460335B2
公开(公告)日：2008-12-02
申请号：US11415572
申请日：2006-05-01
IPC分类号： G11B5/60
CPC分类号： G11B5/3136 , G11B5/3106 , G11B5/6005
摘要： A magnetic head comprises a retrieving unit for converting magnetic information output from a recording medium into an electric signal, a writing unit having the function of electromagnetic conversion for writing the magnetic information in the recording medium in response to the electric signal, and a first protective film formed on the retrieving unit. A second protective film is formed on the first protective film. The coefficient of linear expansion of the second protective film is reduced in comparison with that of the first protective film. Furthermore, the first protective film is an alumina film; in contrast, the second protective film is a film made of an alumina film containing silicon oxide therein.
摘要翻译： 磁头包括用于将从记录介质输出的磁信息转换为电信号的检索单元，具有电磁转换功能的写入单元，用于响应于电信号将磁信息写入记录介质中;以及第一保护 在检索单元上形成的胶片。 在第一保护膜上形成第二保护膜。 与第一保护膜相比，第二保护膜的线膨胀系数降低。 此外，第一保护膜是氧化铝膜; 相反，第二保护膜是由其中含有氧化硅的氧化铝膜制成的膜。
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6.发明授权Magnetic head for reducing projection of retrieving and writing unit from float surface, and magnetic recording/retrieving apparatus using the same 失效用于减小浮体表面上取出和写入单元的投影的磁头，以及使用其的磁记录/回收装置公开(公告)号：US07064925B2
公开(公告)日：2006-06-20
申请号：US10656582
申请日：2003-09-05
CPC分类号： G11B5/3136 , G11B5/3106 , G11B5/6005
摘要： A magnetic head comprises a retrieving unit for converting magnetic information output from a recording medium into an electric signal, a writing unit having the function of electromagnetic conversion for writing the magnetic information in the recording medium in response to the electric signal, and a first protective film formed on the retrieving unit. A second protective film is formed on the first protective film. The coefficient of linear expansion of the second protective film is reduced in comparison with that of the first protective film. Furthermore, the first protective film is an alumina film; in contrast, the second protective film is a film made of an alumina film containing silicon oxide therein.
摘要翻译： 磁头包括用于将从记录介质输出的磁信息转换为电信号的检索单元，具有电磁转换功能的写入单元，用于响应于电信号将磁信息写入记录介质中;以及第一保护 在检索单元上形成的胶片。 在第一保护膜上形成第二保护膜。 与第一保护膜相比，第二保护膜的线膨胀系数降低。 此外，第一保护膜是氧化铝膜; 相反，第二保护膜是由其中含有氧化硅的氧化铝膜制成的膜。
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公开(公告)号：US20060198056A1
公开(公告)日：2006-09-07
申请号：US11415572
申请日：2006-05-01
IPC分类号： G11B5/60
CPC分类号： G11B5/3136 , G11B5/3106 , G11B5/6005
摘要： A magnetic head comprises a retrieving unit for converting magnetic information output from a recording medium into an electric signal, a writing unit having the function of electromagnetic conversion for writing the magnetic information in the recording medium in response to the electric signal, and a first protective film formed on the retrieving unit. A second protective film is formed on the first protective film. The coefficient of linear expansion of the second protective film is reduced in comparison with that of the first protective film. Furthermore, the first protective film is an alumina film; in contrast, the second protective film is a film made of an alumina film containing silicon oxide therein.
摘要翻译： 磁头包括用于将从记录介质输出的磁信息转换为电信号的检索单元，具有电磁转换功能的写入单元，用于响应于电信号将磁信息写入记录介质中;以及第一保护 在检索单元上形成的胶片。 在第一保护膜上形成第二保护膜。 与第一保护膜相比，第二保护膜的线膨胀系数降低。 此外，第一保护膜是氧化铝膜; 相反，第二保护膜是由其中含有氧化硅的氧化铝膜制成的膜。
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公开(公告)号：US07333301B2
公开(公告)日：2008-02-19
申请号：US10650832
申请日：2003-08-29
申请人： Kimitoshi Etoh , Nobuo Yoshida , Moriaki Fuyama , Makoto Morijiri , Kenichi Meguro , Ichiro Oodake , Kazue Kudo , Yohji Maruyama , Katsuro Watanabe
发明人： Kimitoshi Etoh , Nobuo Yoshida , Moriaki Fuyama , Makoto Morijiri , Kenichi Meguro , Ichiro Oodake , Kazue Kudo , Yohji Maruyama , Katsuro Watanabe
IPC分类号： G11B5/127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3136 , G11B5/3909 , G11B5/3912 , Y10T29/49044
摘要： A thin-film magnetic head having little temperature rise in the element, good heat dissipation and a short magnetic path length (narrow coil pitch) and manufacturing method for same is provided. To form the coil of the thin-film magnetic head, a lower coil is first formed and after forming alumina and an inorganic compound containing alumina, a trench is formed for the upper coil by reactive ion etching. The lower coil allows uniform etching at this time and functions as a film to prevent loading effects occurring during reactive ion etching. This trench is then plated in copper and chemical mechanical planarization performed to form the upper layer coil as the dual-layer coil of the present invention. Heat from the coil is efficiently radiated towards the substrate by alumina and an inorganic compound containing alumina with good heat propagation. The ratio of alumina or inorganic compound containing alumina in the lower coil can be selected by reactive ion etching so that an upper coil trench functioning as an etching stopper can be securely formed to allow forming a stable coil film thickness and a short magnetic path length.
摘要翻译： 提供元件温度上升较小，散热好，磁路长度短（窄线圈间距）及其制造方法的薄膜磁头。 为了形成薄膜磁头的线圈，首先形成下线圈，在形成氧化铝和含有氧化铝的无机化合物之后，通过反应离子蚀刻形成用于上部线圈的沟槽。 此时，下线圈允许均匀刻蚀，起到膜的作用，以防止在反应离子蚀刻期间发生的负载效应。 然后将该沟槽镀铜并进行化学机械平面化以形成上层线圈作为本发明的双层线圈。 来自线圈的热量通过氧化铝和含有良好热传播的氧化铝的无机化合物有效地朝向基板辐射。 可以通过反应离子蚀刻来选择下层线圈中的氧化铝或含有氧化铝的无机化合物的比例，从而可以可靠地形成用作蚀刻停止层的上部线圈沟槽，以形成稳定的线圈膜厚度和短的磁路长度。
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公开(公告)号：US20050007698A1
公开(公告)日：2005-01-13
申请号：US10914094
申请日：2004-08-10
申请人： Kazue Kudo , Yasuyuki Okada , Moriaki Fuyama , Yohji Maruyama , Gen Oikawa
发明人： Kazue Kudo , Yasuyuki Okada , Moriaki Fuyama , Yohji Maruyama , Gen Oikawa
CPC分类号： G11B5/313 , G11B5/3109 , G11B5/3146 , G11B5/3163 , Y10T29/49032
摘要： A thin film magnetic head and a method of manufacture thereof, wherein the head includes a lower magnetic pole, an upper magnetic pole provided so as to face the lower magnetic pole, and a magnetic gap layer provided between the lower magnetic pole and the upper magnetic pole. The upper magnetic pole is formed by a sputtered first magnetic layer which is an underlayer and a plated second magnetic layer provided on the sputtered first magnetic layer.
摘要翻译： 一种薄膜磁头及其制造方法，其中头部包括下磁极，设置成面对下磁极的上磁极，以及设置在下磁极与上磁极之间的磁隙层 极。 上磁极由溅射的第一磁性层形成，溅射的第一磁性层是设置在溅射的第一磁性层上的底层和镀覆的第二磁性层。
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公开(公告)号：US06795272B2
公开(公告)日：2004-09-21
申请号：US10217451
申请日：2002-08-14
申请人： Kazue Kudo , Yasuyuki Okada , Moriaki Fuyama , Yohji Maruyama , Gen Oikawa
发明人： Kazue Kudo , Yasuyuki Okada , Moriaki Fuyama , Yohji Maruyama , Gen Oikawa
IPC分类号： G11B547
CPC分类号： G11B5/313 , G11B5/3109 , G11B5/3146 , G11B5/3163 , Y10T29/49032
摘要： A thin film magnetic head includes a lower magnetic pole, an upper magnetic pole provided so as to face the lower magnetic pole, and a magnetic gap layer provided between the lower magnetic pole and the upper magnetic pole. The upper magnetic pole constitutes a first magnetic layer formed on a side facing the magnetic gap layer by means of sputtering and a second magnetic layer formed on the first magnetic layer by means of plating, in which the saturation magnetic flux density of the first magnetic layer is set higher than that of the second magnetic layer. The thin film magnetic head composed as above is capable of generating a stronger magnetic field owing to its stably-formed magnetic core, thereby recording on a high-coercivity medium and high-density recording are made possible.
摘要翻译： 薄膜磁头包括下磁极，设置成面对下磁极的上磁极和设置在下磁极和上磁极之间的磁隙层。 上磁极构成通过溅射形成在面对磁隙层的一侧的第一磁性层，以及通过电镀形成在第一磁性层上的第二磁性层，其中第一磁性层的饱和磁通密度 被设定为高于第二磁性层的高度。 如上构成的薄膜磁头由于其稳定形成的磁芯而能够产生更强的磁场，从而在高矫顽力介质上进行记录和高密度记录。
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