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101.发明授权公开(公告)号：US08203803B2
公开(公告)日：2012-06-19
申请号：US11254138
申请日：2005-10-18
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3136 , G11B5/315
摘要： Embodiments of the invention are directed to narrowing a read/write gap of a perpendicular magnetic head by applying a wrap around shield, data erasing from return pole edges by returning recording field, and reducing TPR of a magnetic material. In one embodiment, the wrap around shields are formed by partitioning and making Gd, which is the height of the shield at the main pole side in the sensor height direction, smaller than the height of the shield connected to the return pole in the sensor height direction.
摘要翻译： 本发明的实施例涉及通过施加环绕屏蔽来缩小垂直磁头的读/写间隙，通过返回记录场从返回磁极边缘擦除数据，并降低磁性材料的TPR。 在一个实施例中，绕环屏蔽是通过分隔并形成的，Gd是传感器高度方向上的主极侧的屏蔽的高度，小于传感器高度处连接到返回极的屏蔽的高度 方向。
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公开(公告)号：US20110058277A1
公开(公告)日：2011-03-10
申请号：US12556472
申请日：2009-09-09
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1871 , G11B5/23 , G11B5/3146 , G11B5/315
摘要： In one embodiment, a system includes a writer for shingled recording which includes a write pole having a trailing edge and first and second side edges extending from the trailing edge. The writer further includes a shield extending along and about parallel to only a portion of the trailing edge or only a portion of the first side edge, and the shield does not extend along the second side edge. In addition, an angle formed between the first side edge and the trailing edge along an air bearing surface side of the writer is different than an angle formed between the second side edge and the trailing edge along the air bearing surface side of the writer. Other systems are also presented which include advanced shingled writing head designs.
摘要翻译： 在一个实施例中，一种系统包括用于瓦楞记录的写入器，其包括具有后缘的写入极和从后沿延伸的第一和第二侧边缘。 写入器还包括屏蔽件，其沿着并且大约平行于后缘的一部分延伸，或仅仅是第一侧边缘的一部分，并且屏蔽件不沿着第二侧边缘延伸。 此外，沿着写入器的空气支承面侧的第一侧边缘和后缘之间形成的角度不同于沿着书写器的空气轴承面侧的第二侧边缘和后边缘之间形成的角度。 还提出了其他系统，其中包括先进的带灰色书写头设计。
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公开(公告)号：US07848053B2
公开(公告)日：2010-12-07
申请号：US11707804
申请日：2007-02-15
IPC分类号： G11B5/147
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1871 , G11B5/3163
摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the effective track width can be decreased without reducing the write-field intensity and a variation of the track width can be decreased. A main pole consists of a pole tip having a part which provides the write track-width and a yoke part recessed from the air beating surface in the element height direction, and the pole tip consists of a pole tip at the trailing side where the width in the track-width direction is large and a pole tip at the leading side where the width in the track width direction is small. Moreover, the throat height of the pole tip at the trailing side is made greater than the throat height of the pole tip at the leading side.
摘要翻译： 根据本发明的实施例提供一种磁头，其中可以在不降低写入场强度的情况下降低有效磁道宽度的扩大，并且可以减小磁道宽度的变化。 主极包括具有提供写入轨道宽度的部分的极尖和在元件高度方向上从空气打浆表面凹陷的轭部，并且极尖由在后侧的极尖组成，其中宽度 在轨道宽度方向上较大，并且在轨道宽度方向上的宽度小的前端的极尖。 此外，使尾端在后侧的喉部高度大于前端的极尖的喉部高度。
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104.发明申请公开(公告)号：US20100053812A1
公开(公告)日：2010-03-04
申请号：US12547964
申请日：2009-08-26
IPC分类号： G11B5/187
CPC分类号： G11B5/1278 , G11B5/314 , G11B2005/001
摘要： According to one embodiment, a magnetic head for recording magnetic data by changing the magnetization direction of a magnetic recording layer of a magnetic medium comprises a magnetic pole for generating a magnetic field to change the magnetization direction of the magnetic recording layer, and a facing electrode pair for generating an electromagnetic field and applying energy to the magnetic recording layer to assist the change of the magnetization direction of the magnetic recording layer caused by the magnetic field from the magnetic pole. Other embodiments are also presented.
摘要翻译： 根据一个实施例，用于通过改变磁介质的磁记录层的磁化方向来记录磁数据的磁头包括用于产生磁场以改变磁记录层的磁化方向的磁极和面对电极 用于产生电磁场并向磁记录层施加能量以帮助由磁极引起的磁场引起的磁记录层的磁化方向的改变。 还提出了其他实施例。
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105.发明授权公开(公告)号：US07606006B2
公开(公告)日：2009-10-20
申请号：US11014025
申请日：2004-12-15
申请人： Masafumi Mochizuki , Kaori Suzuki , Kimitoshi Etoh
发明人： Masafumi Mochizuki , Kaori Suzuki , Kimitoshi Etoh
摘要： Embodiments of the invention provide a write head for perpendicular recording in which the magnetic field intensity applied at a read element is reduced with larger write-field gradients and the distance between a write element and a read element is small. In one embodiment, a pair of magnetic bodies for shielding a read element are provided on the leading and trailing sides of the read element respectively and whichever one of the two shields is the longer in the length from the air bearing surface is shorter than the length up to the back contact position PBK at which a main pole and an auxiliary pole are connected.
摘要翻译： 本发明的实施例提供了用于垂直记录的写入头，其中在读取元件处施加的磁场强度随着更大的写入场梯度而减小，并且写入元件和读取元件之间的距离小。 在一个实施例中，用于屏蔽读取元件的一对磁体分别设置在读取元件的前侧和后侧，并且两个屏蔽中的任一个在距空气支承表面的长度上较长的长度短于长度 直到连接主极和辅助极的后接触位置PBK。
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公开(公告)号：US20090168241A1
公开(公告)日：2009-07-02
申请号：US12315810
申请日：2008-12-04
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278
摘要： Embodiments of the present invention help to inhibit record information in a perpendicular magnetic recording disk drive from being attenuated or erased due to leakage of a recording magnetic field into the already-recorded information. According to one embodiment, a magnetic disk includes a soft magnetic underlayer and a magnetic recording layer. A magnetic head includes a main magnetic pole, an auxiliary magnetic pole, a trailing shield which is disposed via a non-magnetic film on a trailing side of the main magnetic pole and in which a reverse side is in contact with the auxiliary magnetic pole, and side shields disposed on both sides of the main magnetic pole. Herein, where a saturation magnetic flux density of the soft magnetic underlayer is BsSUL and a film thickness thereof is tSUL; a saturation magnetic flux density of the trailing shield and side shields is Bsshield and a film thickness thereof is tshield; and the number of sides of the trailing shield and the side shields, which sides oppose the main magnetic pole, is C1, conditions are set so as to satisfy the following expression: BsSUL×tSUL>(1/C1)×Bsshield×tshield.
摘要翻译： 本发明的实施例有助于阻止垂直磁记录盘驱动器中的记录信息由于记录磁场泄漏到已经记录的信息而被衰减或擦除。 根据一个实施例，磁盘包括软磁性底层和磁记录层。 磁头包括主磁极，辅助磁极，后屏蔽，其经由主磁极的后侧上的非磁性膜设置，并且反向侧与辅助磁极接触， 以及设置在主磁极两侧的侧屏蔽。 这里，软磁性底层的饱和磁通密度为BsSUL，膜厚为tSUL的情况下， 后屏蔽和侧屏蔽的饱和磁通密度为Bsshield，其膜厚为tshield; 并且后屏蔽和侧屏蔽的与主磁极相对的侧面的数量为C1，条件被设置为满足以下表达式：<？in-line-formula description =“在线公式 “end =”lead“？> BsSxtxtSUL>（1 / C1）xBsshieldxtshield。<？in-line-formula description =”In-line Formulas“end =”tail“？>
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107.发明申请公开(公告)号：US20090154012A1
公开(公告)日：2009-06-18
申请号：US12313410
申请日：2008-11-19
IPC分类号： G11B5/10
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。
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108.发明授权Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it 失效薄膜垂直磁记录头，其制造工艺和使用它的磁盘驱动器公开(公告)号：US07532433B2
公开(公告)日：2009-05-12
申请号：US11802297
申请日：2007-05-22
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余磁化并防止写入后的擦除。
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公开(公告)号：US07450349B2
公开(公告)日：2008-11-11
申请号：US11292575
申请日：2005-12-02
申请人： Yasutaka Nishida , Ikuya Tagawa , Masafumi Mochizuki , Roger Wood
发明人： Yasutaka Nishida , Ikuya Tagawa , Masafumi Mochizuki , Roger Wood
IPC分类号： G11B5/39
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： Embodiments of the invention avoid erasure of recorded data by concentrating stray fields on a magnetic head element. According to one embodiment, in a magnetic storage apparatus using a perpendicular recording medium with a soft magnetic under layer, a soft magnetic shield is provided so as to surround the upper parts and sides of magnetic head elements. A distance between the soft magnetic shield and the medium is shorter than that between the soft magnetic shield and the magnetic head element.
摘要翻译： 本发明的实施例通过将杂散场集中在磁头元件上来避免记录数据的擦除。 根据一个实施例，在使用具有软磁下层的垂直记录介质的磁存储装置中，设置软磁屏蔽以包围磁头元件的上部和侧部。 软磁屏蔽和介质之间的距离比软磁屏蔽和磁头元件之间的距离短。
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公开(公告)号：US20060132957A1
公开(公告)日：2006-06-22
申请号：US11354912
申请日：2006-02-16
申请人： Takehiko Hamaguchi , Atsushi Nakamura , Yasutaka Nishida , Masafumi Mochizuki , Hideki Sawaguchi
发明人： Takehiko Hamaguchi , Atsushi Nakamura , Yasutaka Nishida , Masafumi Mochizuki , Hideki Sawaguchi
IPC分类号： G11B5/02
CPC分类号： G11B5/6005 , G11B5/012 , G11B5/105 , G11B5/127 , G11B5/1272 , G11B5/2654 , G11B5/4886 , G11B5/56 , G11B2005/001 , G11B2005/0021
摘要： A magnetic disk apparatus including: a disk holding data as magnetic information on a magnetic recording film; a head to perform writing and reading of the magnetic information; a rotary actuator to move the head in a radial direction of the disk; plural heat elements in the head to locally heat the disk; a write element in the head to apply a magnetic field to the disk; and means for selecting at least one heat element from the plural heat elements, wherein the means for selecting the heat element selects at least one heat element from the plural heat elements so as to bring a center line of an area heated by the heat element and a center line of the position of the magnetic field generated by the write element into approximate correspondence, in correspondence with a relative angle between the head and a direction of movement of the disk.
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