公开(公告)号：US20140002929A1

公开(公告)日：2014-01-02

申请号：US13659749

申请日：2012-10-24

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

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

IPC: G11B5/66 ,  G11B5/82 ,  G11B5/84

CPC classification number: G11B5/3163 ,  G11B5/3116 ,  G11B5/82 ,  G11B5/855

Abstract: 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.

Abstract translation: 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

Applicant: Kazutaka Takizawa ,  Akira Watanabe ,  Kaori Kimura ,  Akihiko Takeo

Inventor： Kazutaka Takizawa ,  Akira Watanabe ,  Kaori Kimura ,  Akihiko Takeo

IPC: G11B5/84 ,  G11B5/74

CPC classification number: G11B5/746 ,  G11B5/855

Abstract: 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.

Abstract translation: 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

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

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

IPC: G11B5/84

CPC classification number: G11B5/855

Abstract: 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.

Abstract translation: 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

Applicant: Akihiko Takeo ,  Masahiro Takashita

Inventor： Akihiko Takeo ,  Masahiro Takashita

IPC: G11B5/127

CPC classification number: G11B5/02 ,  G11B5/314 ,  G11B5/3146 ,  G11B2005/0024

Abstract: 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.

Abstract translation: 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

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

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

IPC: G11B5/31

CPC classification number: G11B5/3146 ,  G11B5/314 ,  G11B2005/0024 ,  Y10T428/1171

Abstract: 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.

Abstract translation: 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

Applicant: Tomoko Taguchi ,  Yuichi Yamada ,  Akihiko Takeo

Inventor： Tomoko Taguchi ,  Yuichi Yamada ,  Akihiko Takeo

IPC: G11B5/127

CPC classification number: G11B5/314 ,  G11B5/3133 ,  G11B5/6088 ,  G11B2005/0021

Abstract: 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.

Abstract translation: 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

Applicant: Yuichi Yamada ,  Akihiko Takeo ,  Hiroshi Isokawa

Inventor： Yuichi Yamada ,  Akihiko Takeo ,  Hiroshi Isokawa

IPC: G11B13/04

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110261478A1

公开(公告)日：2011-10-27

申请号：US13092044

申请日：2011-04-21

Applicant: Akihiko Takeo ,  Yoshihiko Fuji ,  Hiromi Yuasa ,  Michiko Hara ,  Shuichi Murakami ,  Hideaki Fukuzawa

Inventor： Akihiko Takeo ,  Yoshihiko Fuji ,  Hiromi Yuasa ,  Michiko Hara ,  Shuichi Murakami ,  Hideaki Fukuzawa

IPC: G11B5/02 ,  G11B5/39

CPC classification number: G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3906 ,  H01F10/3254 ,  H01F10/3272 ,  H01F41/307 ,  H01F41/325 ,  H01L43/08 ,  Y10T428/1114

Abstract: According to one embodiment, a magnetoresistive element includes a stack and a pair of electrodes that allows electric current to flow through the stack in a direction perpendicular to a surface of the stack. The stack includes a cap layer, a magnetization pinned layer, a magnetization free layer provided between the cap layer and the magnetization pinned layer, a tunneling insulator provided between the magnetization pinned layer and the magnetization free layer, and a functional layer provided within the magnetization pinned layer, between the magnetization pinned layer and the tunneling insulator, between the tunneling insulator and the magnetization free layer, within the magnetization free layer, or between the magnetization free layer and the cap layer. The functional layer includes an oxide including at least one element selected from Zn, In, Sn and Cd and at least one element selected from Fe, Co and Ni.

Abstract translation: 根据一个实施例，磁阻元件包括堆叠和​​一对电极，其允许电流沿垂直于堆叠表面的方向流过堆叠。 堆叠包括盖层，磁化钉扎层，设置在盖层和磁化钉扎层之间的无磁化层，设置在磁化钉扎层和磁化自由层之间的隧道绝缘体，以及设置在磁化层中的功能层 在磁化固定层和隧道绝缘体之间，在隧道绝缘体和磁化自由层之间，在磁化自由层内，或在磁化自由层和覆盖层之间。 功能层包括包含选自Zn，In，Sn和Cd中的至少一种元素的氧化物和选自Fe，Co和Ni中的至少一种元素。

公开(公告)号：US08012613B2

公开(公告)日：2011-09-06

申请号：US12663350

申请日：2008-06-06

Applicant: Migaku Takahashi ,  Shin Saito ,  Tomoyuki Maeda ,  Akihiko Takeo ,  Yuzo Sasaki ,  Ryuji Sakaguchi

Inventor： Migaku Takahashi ,  Shin Saito ,  Tomoyuki Maeda ,  Akihiko Takeo ,  Yuzo Sasaki ,  Ryuji Sakaguchi

IPC: G11B5/66

CPC classification number: G11B5/732 ,  Y10T428/11

Abstract: A magnetic recording medium is provided, which has at least one soft magnetic layer, at least one seed layer, at least one underlayer and at least one perpendicular magnetic recording layer, and is characterized in that the or each seed layer is comprised of a covalently bonded material. The covalently bonded material preferably predominantly comprises a nitride having a hexagonal crystal structure, more preferably, predominantly comprises aluminum nitride having a hexagonal wurtzite crystal structure. This magnetic recording medium is superior in recording and reproducing an information with high density.

Abstract translation: 提供了一种磁记录介质，其具有至少一个软磁层，至少一个种子层，至少一个底层和至少一个垂直磁记录层，其特征在于该或每个种子层由共价 粘合材料。 共价键合的材料优选主要包含具有六方晶系结构的氮化物，更优选主要包含具有六方纤锌矿晶体结构的氮化铝。 这种磁记录介质在高密度记录和再现信息方面是优越的。

公开(公告)号：US20110205667A1

公开(公告)日：2011-08-25

申请号：US12853690

申请日：2010-08-10

Applicant: Kenichiro YAMADA ,  Katsuhiko KOUI ,  Mariko KITAZAKI ,  Masayuki TAKAGISHI ,  Tomomi FUNAYAMA ,  Masahiro TAKASHITA ,  Soichi OIKAWA ,  Akihiko TAKEO

Inventor： Kenichiro YAMADA ,  Katsuhiko KOUI ,  Mariko KITAZAKI ,  Masayuki TAKAGISHI ,  Tomomi FUNAYAMA ,  Masahiro TAKASHITA ,  Soichi OIKAWA ,  Akihiko TAKEO

IPC: G11B5/187

CPC classification number: G11B5/3116 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/315 ,  G11B5/743

Abstract: A magnetic recording head includes a magnetic pole, a spin torque oscillator, a first shield and a second shield. The magnetic pole has an air-bearing surface. The spin torque oscillator is provided so that a first side of the spin torque oscillator faces the magnetic pole in a first direction parallel to the air-bearing surface. The first shield includes a granular magnetic material, and is provided so that two portions of the first shield sandwich the spin torque oscillator in a second direction which is parallel to the air-bearing surface and perpendicular to the first direction. The second shield is provided on a second side of the spin torque oscillator opposite to the first side.

Abstract translation: 磁记录头包括磁极，自旋转矩振荡器，第一屏蔽和第二屏蔽。 磁极具有空气轴承表面。 旋转扭矩振荡器被设置成使得旋转扭矩振荡器的第一侧在平行于空气轴承表面的第一方向上面对磁极。 第一屏蔽包括颗粒状磁性材料，并且被设置成使得第一屏蔽的两个部分在平行于空气轴承表面并垂直于第一方向的第二方向上夹住旋转扭矩振荡器。 第二屏蔽设置在与第一侧相反的自旋扭矩振荡器的第二侧上。