公开(公告)号：US20100188772A1

公开(公告)日：2010-07-29

申请号：US12692354

申请日：2010-01-22

申请人： Shingo Sasaki ,  Shin Saito ,  Migaku Takahashi ,  Atsushi Hashimoto ,  Yuzo Sasaki ,  Gohei Kurokawa ,  Tomoyuki Maeda ,  Akihiko Takeo

发明人： Shingo Sasaki ,  Shin Saito ,  Migaku Takahashi ,  Atsushi Hashimoto ,  Yuzo Sasaki ,  Gohei Kurokawa ,  Tomoyuki Maeda ,  Akihiko Takeo

IPC分类号： G11B21/02 ,  C23C14/34 ,  G11B5/66

CPC分类号： G11B5/851 ,  C23C14/14 ,  C23C14/34 ,  G11B5/65 ,  G11B5/82 ,  Y02T50/67

摘要： There are provided a method for manufacturing a magnetic recording medium which is excellent in terms of both the recording and reproduction characteristics and the thermal fluctuation characteristics without reducing the density and hardness of the perpendicular magnetic layer; a magnetic recording medium; and a magnetic recording and reproducing apparatus with which an excellent recording density is achieved,wherein, in the method for manufacturing the magnetic recording medium,at least a portion of the perpendicular magnetic layer 4 is formed as a magnetic layer having a granular structure that contains Co as a major component and also contains an oxide of at least one nonmagnetic metal selected from the group consisting of Cr, Si, Ta, Al, Ti, W and Mg;a target for forming the perpendicular magnetic layer 4 by the sputtering process is prepared so as to include an oxide of Co and a compound of Co and at least one nonmagnetic metal selected from the group consisting of Cr, Si, Ta, Al, Ti, W and Mg, and to make the proportion of oxygen contained in the target higher than the proportion of oxygen contained in the perpendicular magnetic layer 4; anda sputtering gas pressure at the time of forming the perpendicular magnetic layer is set to 1 Pa or less.

摘要翻译： 提供了一种在不降低垂直磁性层的密度和硬度的情况下，在记录和再现特性以及热波动特性方面优异的磁记录介质的制造方法; 磁记录介质; 以及实现了良好的记录密度的磁记录和重放装置，其中在磁记录介质的制造方法中，垂直磁性层4的至少一部分形成为具有粒状结构的磁性层， Co作为主要成分，还含有选自Cr，Si，Ta，Al，Ti，W和Mg中的至少一种非磁性金属的氧化物; 制备通过溅射法形成垂直磁性层4的目标，以便包括Co的氧化物和Co的化合物和选自Cr，Si，Ta，Al，Ti的至少一种非磁性金属， W和Mg，并使靶中含有的氧的比例高于垂直磁性层4中所含的氧的比例; 在形成垂直磁性层时的溅射气体压力设定为1Pa以下。

公开(公告)号：US06903890B2

公开(公告)日：2005-06-07

申请号：US10097327

申请日：2002-03-15

申请人： Yuka Aoyagi ,  Akihiko Takeo

发明人： Yuka Aoyagi ,  Akihiko Takeo

IPC分类号： G11B5/00 ,  G11B5/02 ,  G11B5/09 ,  G11B20/10 ,  G11B20/24

CPC分类号： G11B20/10212 ,  G11B5/09 ,  G11B20/10194 ,  G11B20/24 ,  G11B2005/0029

摘要： There is disclosed a write compensator which suppresses bit shift caused by distortion of a read signal waveform of a read head in a disk drive adopting a perpendicular magnetic recording system. The write compensator executes write compensation during recording data based on the known relationship between bit shift which is beyond an allowable range and a pattern of a data bit string of a data signal. A write amplifier converts the write-compensated data signal into an electrical signal by using the write compensator so as to suppress the bit shift, and supplies it to a write head.

摘要翻译： 公开了一种写补偿器，其抑制由采用垂直磁记录系统的盘驱动器中的读头的读信号波形的失真引起的位移。 写补偿器基于超出允许范围的位移与数据信号的数据位串的模式之间的已知关系在记录数据期间执行写补偿。 写入放大器通过使用写补偿器将写补偿数据信号转换成电信号，以便抑制位移，并将其提供给写头。

公开(公告)号：US20050105213A1

公开(公告)日：2005-05-19

申请号：US10943226

申请日：2004-09-17

申请人： Akihiko Takeo ,  Koji Yano ,  Kazuhito Shimomura ,  Koji Osafune ,  Tsutomu Tanaka ,  Yoichiro Tanaka

发明人： Akihiko Takeo ,  Koji Yano ,  Kazuhito Shimomura ,  Koji Osafune ,  Tsutomu Tanaka ,  Yoichiro Tanaka

IPC分类号： G11B5/31 ,  G11B5/012 ,  G11B5/02 ,  G11B5/127 ,  G11B5/187

CPC分类号： G11B5/1278

摘要： A disk drive including a write head for perpendicular magnetic recording is disclosed. The write head includes a main recording magnetic pole which applies a perpendicular recording magnetic field onto a disk medium and an auxiliary magnetic pole, and has a structure in which the auxiliary magnetic pole is arranged on a rear end side of the main recording magnetic pole through a small gap there between in a relative movement direction of this write head. this write head.

摘要翻译： 公开了一种包括用于垂直磁记录的写入头的磁盘驱动器。 该写入头包括将垂直记录磁场施加到盘介质和辅助磁极上的主记录磁极，并且具有其中辅助磁极布置在主记录磁极的后端侧的结构 在这个写头的相对运动方向之间有一个小间隙。 这个写头。

公开(公告)号：US20140002929A1

公开(公告)日：2014-01-02

申请号：US13659749

申请日：2012-10-24

申请人： Kazutaka TAKIZAWA ,  Akira Watanabe ,  Kaori Kimura ,  Takeshi Iwasaki ,  Akihiko Takeo

发明人： Kazutaka TAKIZAWA ,  Akira Watanabe ,  Kaori Kimura ,  Takeshi Iwasaki ,  Akihiko Takeo

IPC分类号： G11B5/66 ,  G11B5/82 ,  G11B5/84

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/82 ,  G11B5/855

摘要： A manufacturing method of a magnetic recording medium includes follows: forming a magnetic recording layer on a substrate; forming an under layer and a metal release layer that forms an alloy with the under layer on the magnetic recording layer in this order and forming an alloyed release layer by alloying the under layer and the metal release layer; forming a mask layer on the alloyed release layer; forming a resist layer on the mask layer; providing a protrusion-recess pattern by patterning the resist layer; transferring the protrusion-recess pattern to the mask layer; transferring the protrusion-recess pattern to the alloyed release layer; transferring the protrusion-recess pattern to the magnetic recording layer; dissolving the alloyed release layer by using a stripping solution and removing a layer formed on the alloyed release layer from an upper side of the magnetic recording layer.

摘要翻译： 磁记录介质的制造方法如下：在基板上形成磁记录层; 形成下层和金属剥离层，其与磁性记录层上的下层依次形成合金，并通过使底层和金属剥离层合金化而形成合金剥离层; 在合金剥离层上形成掩模层; 在掩模层上形成抗蚀剂层; 通过图案化抗蚀剂层提供突起 - 凹陷图案; 将突起凹部图案转印到掩模层; 将所述突起凹部图案转印到所述合金剥离层; 将突起凹部图案转印到磁记录层; 通过使用剥离溶液溶解合金剥离层，并从磁记录层的上侧除去在合金剥离层上形成的层。

公开(公告)号：US20130252029A1

公开(公告)日：2013-09-26

申请号：US13599569

申请日：2012-08-30

申请人： Kazutaka Takizawa ,  Akira Watanabe ,  Kaori Kimura ,  Akihiko Takeo

发明人： Kazutaka Takizawa ,  Akira Watanabe ,  Kaori Kimura ,  Akihiko Takeo

IPC分类号： G11B5/84 ,  G11B5/74

CPC分类号： G11B5/746 ,  G11B5/855

摘要： In a removing step, a phase-separated release solution including a first phase containing a first solvent capable of dissolving a release layer and a second phase containing a second solvent having a property of separating from the first solvent is prepared, and a patterned magnetic recording medium is dipped in the first phase together with a release layer, mask layer, and resist layer remaining on a magnetic recording layer, thereby removing the release layer. After that, the patterned magnetic recording medium is moved to the second phase, and separated from the first phase containing the release layer and the layers remaining on the release layer.

摘要翻译： 在去除步骤中，制备包括含有能够溶解脱模层的第一溶剂的第一相和含有具有与第一溶剂分离的性质的第二溶剂的第二相的相分离的脱模溶液，以及图案化磁记录 将介质与保留在磁记录层上的剥离层，掩模层和抗蚀剂层一起浸渍在第一相中，从而除去剥离层。 之后，图案化的磁记录介质移动到第二相，并且从包含剥离层的第一相和保留在剥离层上的层分离。

公开(公告)号：US20130248485A1

公开(公告)日：2013-09-26

申请号：US13607134

申请日：2012-09-07

申请人： Akira Watanabe ,  Kaori Kimura ,  Kazutaka Takizawa ,  Takeshi Iwasaki ,  Tsuyoshi Onitsuka ,  Akihiko Takeo

发明人： Akira Watanabe ,  Kaori Kimura ,  Kazutaka Takizawa ,  Takeshi Iwasaki ,  Tsuyoshi Onitsuka ,  Akihiko Takeo

IPC分类号： G11B5/84

CPC分类号： G11B5/855

摘要： A manufacturing method of a magnetic recording medium includes steps of forming a magnetic recording layer, a first mask layer, a second mask layer containing silicon as primary component, a strip layer, a third mask layer, and a resist layer, a step of patterning the resist layer to provide a pattern, steps of transferring the pattern to the third mask layer, to the strip layer, and to the second mask layer, a step of removing the strip layer by wet etching and of stripping the third mask layer and the resist layer above the magnetic recording layer, steps of transferring the pattern to the first mask layer and to the magnetic recording layer, and a step of stripping the first mask layer remaining on the magnetic recording layer.

摘要翻译： 磁记录介质的制造方法包括以下步骤：形成磁记录层，第一掩模层，含硅作为主要成分的第二掩模层，带状层，第三掩模层和抗蚀剂层，图案化步骤 提供图案的抗蚀剂层，将图案转移到第三掩模层的步骤，到带状层和第二掩模层，通过湿法蚀刻去除剥离层并剥离第三掩模层的步骤和 抗蚀剂层，将图案转印到第一掩模层和磁记录层的步骤，以及剥离残留在磁记录层上的第一掩模层的步骤。

公开(公告)号：US08467150B2

公开(公告)日：2013-06-18

申请号：US13408912

申请日：2012-02-29

申请人： Akihiko Takeo ,  Masahiro Takashita

发明人： Akihiko Takeo ,  Masahiro Takashita

IPC分类号： G11B5/127

CPC分类号： G11B5/02 ,  G11B5/314 ,  G11B5/3146 ,  G11B2005/0024

摘要： According to one embodiment, a recording head includes a main pole configured to apply a recording magnetic field to a recording medium, a trailing shield opposed to the main pole with a gap therebetween, a spin-torque oscillator at least a part of which is located between the main pole and the trailing shield and configured to apply a high-frequency magnetic field to the recording medium, and an auxiliary oscillator configured to apply an auxiliary magnetic field to the spin-torque oscillator.

摘要翻译： 根据一个实施例，记录头包括被配置为向记录介质施加记录磁场的主极，与主极相对的与其之间具有间隙的后屏蔽，其至少一部分位于的自旋扭矩振荡器 在所述主极和所述后屏蔽之间，并且被配置为向所述记录介质施加高频磁场;以及辅助振荡器，被配置为向所述自旋转矩振荡器施加辅助磁场。

公开(公告)号：US08467149B2

公开(公告)日：2013-06-18

申请号：US13218297

申请日：2011-08-25

申请人： Akihiko Takeo ,  Norihito Fujita ,  Mariko Kitazaki ,  Katsuhiko Koui ,  Hitoshi Iwasaki

发明人： Akihiko Takeo ,  Norihito Fujita ,  Mariko Kitazaki ,  Katsuhiko Koui ,  Hitoshi Iwasaki

IPC分类号： G11B5/31

CPC分类号： G11B5/3146 ,  G11B5/314 ,  G11B2005/0024 ,  Y10T428/1171

摘要： According to one embodiment, a spin torque oscillator includes a field generation layer, a spin injection layer including a first layer and a second layer, and an interlayer interposed between the field generation layer and the spin injection layer, wherein the first layer is interposed between the second layer and the interlayer and includes a (001)-oriented Heuslar magnetic alloy or a (001)-oriented magnetic material having a body-centered cubic lattice structure.

摘要翻译： 根据一个实施例，自旋扭矩振荡器包括场产生层，包括第一层和第二层的自旋注入层以及介于场产生层和自旋注入层之间的夹层，其中第一层介于 第二层和中间层，并且包括具有体心立方晶格结构的（001）取向的Heuslar磁性合金或（001）取向的磁性材料。

公开(公告)号：US08203804B2

公开(公告)日：2012-06-19

申请号：US13174647

申请日：2011-06-30

申请人： Tomoko Taguchi ,  Yuichi Yamada ,  Akihiko Takeo

发明人： Tomoko Taguchi ,  Yuichi Yamada ,  Akihiko Takeo

IPC分类号： G11B5/127

CPC分类号： G11B5/314 ,  G11B5/3133 ,  G11B5/6088 ,  G11B2005/0021

摘要： According to one embodiment, a head gimbal assembly includes a magnetic head for perpendicular, a suspension supporting the magnetic head, and a heating module configured to locally heat a recording area of the recording medium. A head section of the magnetic head includes a magnetic core including a main pole and a return pole forming a magnetic circuit in conjunction with the main pole, a coil configured to excite magnetic flux in the magnetic circuit, and a thermal conductor having thermal conductivity higher than thermal conductivity of the recording medium and including a heat absorbing portion configured to remove heat from the recording medium, and a contact portion configured to contact airflow produced, as the recording medium rotates, at a position other than a facing surface of a slider opposed to the recording medium and radiate heat.

摘要翻译： 根据一个实施例，头部万向架组件包括用于垂直的磁头，支撑磁头的悬架以及被配置为局部加热记录介质的记录区域的加热模块。 磁头的头部包括：磁芯，包括主极和形成与主极结合的磁路的返回极;配置成激励磁路中的磁通的线圈，以及导热系数更高的导热体 并且包括被配置为从记录介质移除热量的吸热部分，以及接触部分，其被配置为接触作为记录介质旋转的气流，所述接触部分在与滑块相对的相对表面以外的位置处 到记录介质并辐射热量。

公开(公告)号：US20120134245A1

公开(公告)日：2012-05-31

申请号：US13284293

申请日：2011-10-28

申请人： Yuichi Yamada ,  Akihiko Takeo ,  Hiroshi Isokawa

发明人： Yuichi Yamada ,  Akihiko Takeo ,  Hiroshi Isokawa

IPC分类号： G11B13/04

CPC分类号： G11B5/02 ,  G11B5/455 ,  G11B20/10314 ,  G11B20/10509 ,  G11B20/1879 ,  G11B2005/001 ,  G11B2005/0021 ,  G11B2220/2516

摘要： According to one embodiment, a magnetic recording device includes: a magnetic recording medium provided with data regions for data recording; a light output module which outputs an optical signal to be applied to a recording position where recording data is recorded of the data regions; a write head which records the recoding data at the recording position magnetically; a light quantity setting module which sets a light quantity value of the optical signal output from the light output module; a heat-assisted recording controller which performs a control so that the recording data is recorded by the write head at the recording position which is heat-assisted by applying an optical signal with the set light quantity value; and a controller which adjusts the light quantity value of the optical signal set by the light quantity setting module using the recording position being a part of the data regions.

摘要翻译： 根据一个实施例，磁记录装置包括：磁记录介质，设置有用于数据记录的数据区; 光输出模块，其输出要施加到记录数据的数据区域的记录位置的光信号; 写入头，其在记录位置上磁记录记录数据; 光量设定模块，其设定从所述光输出模块输出的光信号的光量值; 一种热辅助记录控制器，其执行控制，使得记录数据由写入头记录在通过施加具有设定光量值的光信号而被热辅助的记录位置处; 以及控制器，其使用作为数据区域的一部分的记录位置来调整由光量设定模块设置的光信号的光量值。