公开(公告)号：US08472139B2

公开(公告)日：2013-06-25

申请号：US13226377

申请日：2011-09-06

申请人： Yosuke Urakami ,  Kazue Kudo ,  Hiromi Shiina ,  Masafumi Mochizuki ,  Shouji Tokutake

发明人： Yosuke Urakami ,  Kazue Kudo ,  Hiromi Shiina ,  Masafumi Mochizuki ,  Shouji Tokutake

IPC分类号： G11B5/187 ,  G11B5/23

CPC分类号： G11B5/1278 ,  G11B5/012 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/315

摘要： In one embodiment, a magnetic head includes a main pole, a trailing shield positioned near a trailing side of the main pole, a side shield positioned near both sides of the main pole in a cross-track direction, a leading shield positioned near a leading side of the main pole, and a gap positioned between the main pole and the shields, characterized in that Sg1

摘要翻译： 在一个实施例中，磁头包括主极，位于主极的后侧附近的后屏蔽，位于主磁极两侧的跨屏蔽方向的侧屏蔽，位于导线 主极之间的间隙，以及位于主极与屏蔽之间的间隙，其特征在于，Sg1

公开(公告)号：US20130120876A1

公开(公告)日：2013-05-16

申请号：US13294816

申请日：2011-11-11

申请人： Maki Maeda ,  Kimitoshi Eto ,  Hiromi Shiina ,  Kazue Kudo ,  Masafumi Mochizuki

发明人： Maki Maeda ,  Kimitoshi Eto ,  Hiromi Shiina ,  Kazue Kudo ,  Masafumi Mochizuki

IPC分类号： G11B5/10

CPC分类号： G11B5/3116 ,  G11B5/1278

摘要： A magnetic write head having a gap structure that improves write head performance. The write head includes a magnetic write pole and a magnetic shield that is separated from the trailing edge of the write pole by a non-magnetic trailing gap layer and is separated from the sides of the write pole by non-magnetic side gap layers. The trailing gap extends laterally beyond the side gap layers, and a convex bump is formed an edge of the magnetic shield at a location near the trailing end of the side gap layers.

摘要翻译： 具有提高写头性能的间隙结构的磁写头。 写磁头包括磁写磁极和磁屏蔽，其通过非磁性后隙间隔层与写磁极的后缘分离，并且通过非磁性侧间隙层与写磁极的侧面分离。 拖尾间隙横向延伸超过侧间隙层，并且在靠近侧间隙层的后端的位置处形成凸形凸起的磁屏蔽的边缘。

公开(公告)号：US20130120869A1

公开(公告)日：2013-05-16

申请号：US13297106

申请日：2011-11-15

申请人： Sarbanoo Das ,  Masafumi Mochizuki

发明人： Sarbanoo Das ,  Masafumi Mochizuki

IPC分类号： G11B5/127 ,  G11B21/02 ,  B82Y25/00

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/315 ,  G11B2005/0002

摘要： In one embodiment, a magnetic head includes a main pole configured to produce a magnetic writing field applied to a magnetic medium at an overall angle with respect to a magnetic anisotropy axis which is oriented in a direction perpendicular to a plane of a surface of the magnetic medium, and at least one current carrying element positioned near a media facing surface of the main pole configured to produce an assisting magnetic field applied in a cross-track direction parallel to the plane of the surface of the magnetic medium. In another embodiment, a method includes applying a writing magnetic field to write data to a magnetic medium and applying an assisting magnetic field to the magnetic medium for assisting the writing magnetic field, the assisting magnetic field being applied in a cross-track direction of the magnetic medium and parallel to a plane of a surface of the magnetic medium.

摘要翻译： 在一个实施例中，磁头包括主极，该主极被配置为产生相对于磁各向异性轴以整个角度施加到磁介质的磁场，该磁各向异性轴在垂直于磁性表面的平面的方向上取向 介质和至少一个载流元件，其定位在主极的面向介质的表面附近，其被配置为产生沿平行于磁介质的表面的平面的交叉轨道方向施加的辅助磁场。 在另一个实施例中，一种方法包括：施加写磁场以将数据写入磁介质，并向磁介质施加辅助磁场以辅助写入磁场，辅助磁场沿着 磁介质并且平行于磁介质的表面的平面。

公开(公告)号：US08339749B2

公开(公告)日：2012-12-25

申请号：US12313410

申请日：2008-11-19

申请人： Masafumi Mochizuki ,  Hideaki Maeda ,  Shuji Nishida ,  Takaaki Izumida

发明人： Masafumi Mochizuki ,  Hideaki Maeda ,  Shuji Nishida ,  Takaaki Izumida

IPC分类号： G02B5/32 ,  G02F1/00

CPC分类号： G11B5/3116 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/1278 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996

摘要： Embodiments of the invention reduce generation of a magnetic field with a polarity reverse to that of the recording magnetic field, without deteriorating a gradient in the magnetic field. An embodiment of a magnetic disk device according to the present invention suppresses deviation and erase of already recorded data. In an embodiment, the perpendicular magnetic recording head includes the main magnetic pole, an auxiliary magnetic pole, a trailing shield disposed on the trailing side of the main magnetic pole with a non-magnetic film placed in-between, and side shields disposed on both the sides of the main magnetic pole in the direction of the track width with a non-magnetic film placed in-between. The trailing shield has on the trailing side a portion where film thickness is thinner on the trailing side than the thickness of its element in the height direction in its position facing the main magnetic pole. Adoption of this configuration allows suppression of generation of the magnetic field having a polarity reverse to that of the recording magnetic field, without deteriorating the magnetic field gradient. Also in the portion where the side shields face the main magnetic pole, the side shields have the portion where the film is thinned down in thickness.

摘要翻译： 本发明的实施例减少了与记录磁场相反极性的磁场的产生，而不会使磁场中的梯度恶化。 根据本发明的磁盘装置的实施例抑制已经记录的数据的偏差和擦除。 在一个实施例中，垂直磁记录头包括主磁极，辅助磁极，设置在主磁极的后侧的后屏蔽件，其中放置有非磁性薄膜和设置在两者上的侧屏蔽 主磁极的侧面在磁道宽度方向上放置非磁性膜。 后挡板在其后侧具有在其后侧的膜厚度比其元件在其与主磁极相对的位置的高度方向上的厚度更薄的部分。 采用这种配置允许抑制具有与记录磁场相反的极性的磁场的产生，而不会降低磁场梯度。 另外在侧面屏蔽面对主磁极的部分，侧面屏蔽部分的薄膜部分厚度变薄。

公开(公告)号：US08248893B2

公开(公告)日：2012-08-21

申请号：US12573069

申请日：2009-10-02

申请人： Masafumi Mochizuki ,  Hiroyasu Tanabe ,  Hideki Zaitsu ,  Hideaki Maeda

发明人： Masafumi Mochizuki ,  Hiroyasu Tanabe ,  Hideki Zaitsu ,  Hideaki Maeda

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/3116 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A head-slider configured to fly in proximity to a recording surface of a magnetic-recording disk. The head-slider includes a write element including a main pole configured to generate a magnetic-recording field from a pole tip of the main pole in a first localized portion of the magnetic-recording disk. The head-slider also includes a magnetic-recording assistance element configured to provide energy to a second localized portion of the magnetic-recording disk in order to increase reversibility of a magnetization in a first localized portion of the magnetic-recording disk. A width of the pole tip of the main pole on a leading-edge side is wider than a width of the pole tip of the main pole on a trailing-edge side.

摘要翻译： 头部滑动器，其构造成在磁记录盘的记录表面附近飞行。 磁头滑块包括写入元件，该写入元件包括主磁极，该主极被配置为在磁记录盘的第一局部部分中从主极的极尖产生磁记录场。 磁头滑动器还包括磁记录辅助元件，其被配置为向磁记录盘的第二局部部分提供能量，以增加磁记录盘的第一局部部分中的磁化的可逆性。 前缘侧的主极的极尖的宽度比后缘侧的主极的极尖的宽度宽。

公开(公告)号：US20120162810A1

公开(公告)日：2012-06-28

申请号：US12976975

申请日：2010-12-22

申请人： Sarbanoo Das ,  Masafumi Mochizuki

发明人： Sarbanoo Das ,  Masafumi Mochizuki

IPC分类号： G11B5/37 ,  G11B21/02

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/374 ,  G11B2005/3996

摘要： In one embodiment a magnetic head includes a sensor thin film adapted for producing a planar Hall voltage, the sensor thin film having a thickness along a down-track direction that is greater than a thickness along a cross-track direction. The down-track direction is in a direction of travel of a magnetic medium relative to the sensor thin film, and the cross-track direction is perpendicular to the down-track direction. In another embodiment, at least one magnetic head as described above is included in a magnetic data storage system, which includes a magnetic medium, a drive mechanism for passing the magnetic medium over the at least one magnetic head, and a controller electrically coupled to the at least one magnetic head for controlling operation of the at least one magnetic head. Other heads and systems are described according to various other embodiments.

摘要翻译： 在一个实施例中，磁头包括适于产生平面霍尔电压的传感器薄膜，所述传感器薄膜沿着沿着下游方向的厚度大于沿着横向方向的厚度。 下轨道方向是在磁介质相对于传感器薄膜的行进方向上，并且横向方向垂直于下轨道方向。 在另一个实施例中，如上所述的至少一个磁头包括在磁数据存储系统中，磁数据存储系统包括磁介质，用于使磁介质通过至少一个磁头的驱动机构，以及电耦合到 至少一个用于控制所述至少一个磁头的操作的磁头。 根据各种其他实施例描述其他头和系统。

公开(公告)号：US07969678B2

公开(公告)日：2011-06-28

申请号：US12615219

申请日：2009-11-09

申请人： Hiroyasu Tanabe ,  Hideaki Maeda ,  Hideki Zaitsu ,  Masafumi Mochizuki

发明人： Hiroyasu Tanabe ,  Hideaki Maeda ,  Hideki Zaitsu ,  Masafumi Mochizuki

IPC分类号： G11B27/36

CPC分类号： G11B5/012 ,  G11B5/09 ,  G11B5/455 ,  G11B2005/0005 ,  G11B2005/0021

摘要： In one embodiment, a magnetic disk drive includes a magnetic disk, a head slider for flying above the spinning magnetic disk, a pattern analyzer for analyzing a data pattern of data to be recorded on the magnetic disk to determine a recording current reversal timing and a recording assistance area in accordance with the analysis so that the rear end of the determined recording assistance area is shifted forward if the determined recording current reversal timing is earlier than a criterion, or the rear end of the determined recording assistance area is shifted backward if the determined recording current reversal timing is later than the criterion, a recording assistance element on the slider for forming the determined recording assistance area on the magnetic disk, and a recording element for recording the data on the magnetic disk using the recording current in accordance with the determined recording current reversal timing.

摘要翻译： 在一个实施例中，磁盘驱动器包括磁盘，用于在旋转磁盘上方飞行的磁头滑块，用于分析要记录在磁盘上的数据的数据模式以确定记录电流反转定时的模式分析器，以及 记录辅助区域，如果所确定的记录电流反转定时早于标准，则确定的记录辅助区域的后端向前移动，或者如果确定的记录辅助区域的后端如果 确定的记录电流反转时间晚于该标准，用于在磁盘上形成确定的记录辅助区域的滑块上的记录辅助元件，以及用于使用记录电流将数据记录在磁盘上的记录元件 确定记录电流反转时序。

公开(公告)号：US07881012B2

公开(公告)日：2011-02-01

申请号：US11707415

申请日：2007-02-15

申请人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Youji Maruyama ,  Hiroshi Fukui

发明人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Youji Maruyama ,  Hiroshi Fukui

IPC分类号： G11B5/17

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1872 ,  G11B5/3146

摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the write-field distribution in the track-width direction can be decreased without reducing the write-field intensity. A main pole includes a pole tip having a part which provides the write track-width and a yoke part recessed from the air bearing surface in the element height direction, the pole tip including at least two magnetic films having different track-width directions, and the throat height at the trailing side being made smaller than the throat height at the leading side.

摘要翻译： 根据本发明的实施例提供一种磁头，其中可以减小磁道宽度方向上的写入场分布的扩大，而不降低写入场强度。 主极包括具有提供写入轨道宽度的部分的磁极尖端和在元件高度方向上从空气轴承表面凹陷的磁轭部分，磁极末端包括具有不同轨道宽度方向的至少两个磁性膜，以及 在后侧的喉部高度小于前侧的喉部高度。

公开(公告)号：US07813079B2

公开(公告)日：2010-10-12

申请号：US12255306

申请日：2008-10-21

申请人： Yoshiaki Kawato ,  Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Yasuyuki Okada ,  Masafumi Mochizuki

发明人： Yoshiaki Kawato ,  Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Yasuyuki Okada ,  Masafumi Mochizuki

IPC分类号： G11B5/147 ,  G11B5/127

CPC分类号： G11B5/3906 ,  G11B5/1278

摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field, while also being modified to suppress remanent magnetic fields occurring immediately after writing operation. A return path is provided for supplying a magnetic flux to the main pole, and an conductive coil for excitation of the main pole and return path. The main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer. The low saturation flux density layer and the high saturation flux density suppress remanent magnetization and prevent erasing after writing by utilizing a closed magnetic domain structure in the pole.

摘要翻译： 具有超过100吉比特/平方英寸的高记录密度的窄主极的薄膜垂直磁头，并产生高磁记录场，同时还进行修改以抑制在写入操作之后立即发生的剩余磁场。 提供用于向主极提供磁通量的返回路径和用于激励主极和返回路径的导电线圈。 主极的极宽为200nm以下，由高饱和磁通密度层和低饱和磁通密度层构成的磁性层叠体。 低饱和磁通密度层和高饱和磁通密度通过利用磁极中的闭合磁畴结构来抑制剩磁，并防止写入后的擦除。

公开(公告)号：US07684149B2

公开(公告)日：2010-03-23

申请号：US10976720

申请日：2004-10-29

申请人： Masafumi Mochizuki ,  Kaori Suzuki ,  Kimitoshi Etoh

发明人： Masafumi Mochizuki ,  Kaori Suzuki ,  Kimitoshi Etoh

IPC分类号： G11B5/40

CPC分类号： G11B5/1278 ,  G11B5/265 ,  G11B5/312 ,  G11B5/3143 ,  G11B5/3967

摘要： Embodiments of the invention provide a magnetic head which assures an improved format efficiency without increase in the magnetic field intensity applied at a read element. In one embodiment, a magnetic head incorporates a write head having a main pole and an auxiliary pole, and a read head having a read element between reader shields. An auxiliary shield as a magnetic body is provided between the main pole and reader shields or on the opposite side of the main pole with the reader shields between the main pole and the auxiliary shield.

摘要翻译： 本发明的实施例提供了一种磁头，其确保了在读取元件处施加的磁场强度的增加而不会增加格式效率。 在一个实施例中，磁头包括具有主极和辅助极的写入头，以及在读取器屏蔽之间具有读取元件的读取头。 在主极和读取器屏蔽之间或主极的相对侧上设置有作为磁体的辅助屏蔽，读取器屏蔽在主极和辅助屏蔽之间。