公开(公告)号：US20110205667A1

公开(公告)日：2011-08-25

申请号：US12853690

申请日：2010-08-10

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

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

IPC分类号： G11B5/187

CPC分类号： G11B5/3116 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/315 ,  G11B5/743

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20090059418A1

公开(公告)日：2009-03-05

申请号：US12196841

申请日：2008-08-22

申请人： Akihiko TAKEO ,  Tomomi FUNAYAMA ,  Masayuki TAKAGISHI ,  Masahiro TAKASHITA ,  Kenichiro YAMADA ,  Mariko SHIMIZU ,  Hitoshi IWASAKI ,  Junichi AKIYAMA

发明人： Akihiko TAKEO ,  Tomomi FUNAYAMA ,  Masayuki TAKAGISHI ,  Masahiro TAKASHITA ,  Kenichiro YAMADA ,  Mariko SHIMIZU ,  Hitoshi IWASAKI ,  Junichi AKIYAMA

IPC分类号： G11B21/02

CPC分类号： G11B5/102 ,  G11B5/314 ,  G11B5/6064 ,  G11B5/607 ,  G11B2005/0005 ,  G11B2005/0024

摘要： According to one embodiment, a magnetic head having a head slider which holds a magnetic head unit including a heat-generating element for controlling the flying-height and a high-frequency oscillator for performing high-frequency assisted writing, and on which terminals connected to the magnetic head elements are used in the smallest number required. Terminals are mounted on the head slider and are connected to the magnetic head unit. The terminals include at least one current-supplying terminal that is connected to the heat-generating element serving to control the flying height and to the high-frequency oscillator.

摘要翻译： 根据一个实施例，一种具有磁头滑块的磁头，该磁头滑动器保持包括用于控制飞行高度的发热元件的磁头单元和用于执行高频辅助写入的高频振荡器， 磁头元件以所需的最小数量使用。 端子安装在磁头滑块上并连接到磁头单元。 端子包括连接到用于控制飞行高度的发热元件和至高频振荡器的至少一个供电端子。

公开(公告)号：US20120134054A1

公开(公告)日：2012-05-31

申请号：US13224830

申请日：2011-09-02

申请人： Akihiko TAKEO ,  Mariko KITAZAKI ,  Kenichiro YAMADA ,  Katsuhiko KOUI ,  Hitoshi IWASAKI

发明人： Akihiko TAKEO ,  Mariko KITAZAKI ,  Kenichiro YAMADA ,  Katsuhiko KOUI ,  Hitoshi IWASAKI

IPC分类号： G11B5/127 ,  G11B5/60

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

摘要： According to one embodiment, a magnetic recording head includes a main magnetic pole generating a recording magnetic field in a magnetic recording medium, a return yoke paired with the main magnetic pole and a spin torque oscillator interposed between the main magnetic pole and the return yoke and including a first magnetic layer, a second magnetic layer and a third magnetic layer of Fe4N, the second magnetic layer being interposed between the first magnetic layer and the third magnetic layer, wherein the magnetic recording head is configured to allow a current for oscillation to flow in a direction from the first magnetic layer to the third magnetic layer.

摘要翻译： 根据一个实施例，磁记录头包括在磁记录介质中产生记录磁场的主磁极，与主磁极成对的返回磁轭和插在主磁极和返回磁轭之间的自旋扭矩振荡器， 包括第一磁性层，第二磁性层和Fe4N的第三磁性层，所述第二磁性层介于所述第一磁性层和所述第三磁性层之间，其中所述磁记录头被配置为允许用于振荡的电流流动 在从第一磁性层到第三磁性层的方向上。

公开(公告)号：US20120134048A1

公开(公告)日：2012-05-31

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： G11B5/127

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：US20120140354A1

公开(公告)日：2012-06-07

申请号：US13291777

申请日：2011-11-08

申请人： Akihiko TAKEO ,  Satoshi SHIROTORI ,  Kenichiro YAMADA ,  Katsuhiko KOUI

发明人： Akihiko TAKEO ,  Satoshi SHIROTORI ,  Kenichiro YAMADA ,  Katsuhiko KOUI

IPC分类号： G11B5/48 ,  G11B5/33 ,  H01F41/00 ,  H01S1/02 ,  G11B5/02

CPC分类号： G11B5/3163 ,  B82Y40/00 ,  G11B5/1278 ,  G11B5/314 ,  G11B2005/0024 ,  H01F10/325 ,  H01F10/3286 ,  H01F10/329 ,  H01F41/302 ,  H01F41/308 ,  H01L43/08 ,  Y10T29/4902 ,  Y10T29/49032 ,  Y10T428/1186

摘要： According to one embodiment, there is provided a spin torque oscillator including an oscillation layer formed of a magnetic material, a spin injection layer formed of a magnetic material and configured to inject a spin into the oscillation layer, and a current confinement layer including an insulating portion formed of an oxide or a nitride and a conductive portion formed of a nonmagnetic metal and penetrating the insulating portion in a direction of stacking. The conductive portion of the current confinement layer is positioned near a central portion of a plane of a device region including the oscillation layer and the spin injection layer.

摘要翻译： 根据一个实施例，提供了一种自旋扭矩振荡器，其包括由磁性材料形成的振荡层，由磁性材料形成的自旋注入层，并被配置为向振荡层注入自旋;以及电流限制层，其包括绝缘体 由氧化物或氮化物形成的部分和由非磁性金属形成的导电部分，并且在堆叠方向上穿透绝缘部分。 电流限制层的导电部分位于包括振荡层和自旋注入层的器件区域的平面的中心部分附近。

公开(公告)号：US20120314326A1

公开(公告)日：2012-12-13

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：US20130180948A1

公开(公告)日：2013-07-18

申请号：US13560183

申请日：2012-07-27

申请人： Kazutaka TAKIZAWA ,  Akira WATANABE ,  Kaori KIMURA ,  Takeshi IWASAKI ,  Tsuyoshi ONITSUKA ,  Akihiko TAKEO

发明人： Kazutaka TAKIZAWA ,  Akira WATANABE ,  Kaori KIMURA ,  Takeshi IWASAKI ,  Tsuyoshi ONITSUKA ,  Akihiko TAKEO

IPC分类号： G11B5/84

CPC分类号： G11B5/855

摘要： According to one embodiment, a release layer is formed on a magnetic recording layer, a mask layer is formed on the release layer, projecting patterns are formed on the mask layer, the projecting patterns are transferred onto the mask layer, the projecting patterns are transferred onto the release layer, the projecting patterns are transferred onto the magnetic recording layer, the release layer is removed by a solvent, and a remaining mask layer is removed from the surface of the magnetic recording layer. The release layer is made of a polymeric material. The mask layer is made of at least one of a metal or a metal compound. The projecting patterns are formed by using a self-organized layer made of a block copolymer having at least two of polymer chains.

摘要翻译： 根据一个实施例，在磁记录层上形成释放层，在剥离层上形成掩模层，在掩模层上形成突出图案，将突出图案转印到掩模层上，投影图案被转印 在释放层上，将突出图案转印到磁记录层上，通过溶剂去除剥离层，并从磁记录层的表面除去剩余的掩模层。 脱模层由聚合材料制成。 掩模层由金属或金属化合物中的至少一种制成。 通过使用由具有至少两个聚合物链的嵌段共聚物制成的自组织层来形成突出图案。

公开(公告)号：US20100039730A1

公开(公告)日：2010-02-18

申请号：US12542372

申请日：2009-08-17

申请人： Shinichi ISHIBASHI ,  Migaku TAKAHASHI ,  Shin SAITO ,  Yuzo SASAKI ,  Atsushi HASHIMOTO ,  Gohei KUROKAWA ,  Tomoyuki MAEDA ,  Akihiko TAKEO

发明人： Shinichi ISHIBASHI ,  Migaku TAKAHASHI ,  Shin SAITO ,  Yuzo SASAKI ,  Atsushi HASHIMOTO ,  Gohei KUROKAWA ,  Tomoyuki MAEDA ,  Akihiko TAKEO

IPC分类号： G11B5/127 ,  G11B5/66 ,  C23C16/44

CPC分类号： G11B5/732 ,  B82Y25/00 ,  B82Y40/00 ,  G11B5/65 ,  G11B5/667 ,  H01F10/3272 ,  H01F41/306

摘要： The present invention provides a magnetic recording medium which is capable of improving the perpendicular orientation of a perpendicular magnetic recording layer while maintaining a writing performance during recording and obtaining both an improvement in the perpendicular orientation and fine magnetic crystal particles with a uniform diameter, and which enables information to be recorded or reproduced at high density, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. A magnetic recording medium 10 according to the present invention includes at least a soft magnetic underlayer 2, an orientation control layer 3, a magnetic recording layer 4, and a protective layer 5 formed on a non-magnetic substrate 1. The orientation control layer 3 has a seed layer 6 and an intermediate layer 7. The seed layer 6 is made of a Cu—Ti alloy that has a face-centered cubic structure and includes Cu as a main component. The Cu—Ti alloy has a (111) crystal plane oriented substantially perpendicular to the surface of the non-magnetic substrate 1 and has a pseudo-hexagonal structure.

摘要翻译： 本发明提供一种磁记录介质，其能够在记录期间保持写入性能并且获得具有均匀直径的垂直取向和精细磁性结晶颗粒的改善的同时改善垂直磁记录层的垂直取向，并且其中 能够以高密度记录或再现信息，其制造方法和磁记录/再现装置。 根据本发明的磁记录介质10至少包括形成在非磁性基板1上的软磁性底层2，取向控制层3，磁记录层4和保护层5.取向控制层3 具有种子层6和中间层7.种子层6由具有面心立方结构并且包括Cu作为主要成分的Cu-Ti合金制成。 Cu-Ti合金具有大致垂直于非磁性基板1的表面定向的（111）晶面，并且具有假六边形结构。

公开(公告)号：US20120276414A1

公开(公告)日：2012-11-01

申请号：US13350652

申请日：2012-01-13

申请人： Tomoyuki MAEDA ,  Yousuke ISOWAKI ,  Akira WATANABE ,  Akihiko TAKEO

发明人： Tomoyuki MAEDA ,  Yousuke ISOWAKI ,  Akira WATANABE ,  Akihiko TAKEO

IPC分类号： G11B5/66

CPC分类号： G11B5/746 ,  G11B5/65 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/855

摘要： According to one embodiment, a perpendicular magnetic recording medium includes a nonmagnetic interlayer formed on a nonmagnetic substrate, an antiferromagnetic layer having a thickness of 2 to 30 nm, a first nonmagnetic underlayer having a thickness of 0.2 to 5 nm, a first bit patterned ferromagnetic layer, a first bit patterned nonmagnetic layer, and a second bit patterned ferromagnetic layer.

摘要翻译： 根据一个实施例，垂直磁记录介质包括形成在非磁性基板上的非磁性中间层，厚度为2至30nm的反铁磁层，厚度为0.2至5nm的第一非磁性底层，第一位图案化铁磁体 层，第一位图案非磁性层和第二位图案化铁磁层。

公开(公告)号：US20130182351A1

公开(公告)日：2013-07-18

申请号：US13553692

申请日：2012-07-19

申请人： Takeshi IWASAKI ,  Kazutaka TAKIZAWA ,  Akira WATANABE ,  Kaori KIMURA ,  Akihiko TAKEO

发明人： Takeshi IWASAKI ,  Kazutaka TAKIZAWA ,  Akira WATANABE ,  Kaori KIMURA ,  Akihiko TAKEO

IPC分类号： G11B5/66 ,  G11B5/84 ,  G11B17/02

CPC分类号： G11B5/84 ,  G11B5/65 ,  G11B5/855

摘要： A perpendicular magnetic recording medium according to an embodiment includes a substrate and perpendicular magnetic recording layer. The perpendicular magnetic recording layer includes a recording portion and non-recording portion. The recording portion has patterns regularly arranged in the longitudinal direction, and includes magnetic layers containing Fe or Co and Pt as main components, and at least one additive component selected from Ti, Si, Al, and W. The non-recording portion includes oxide layers formed by oxidizing the side surfaces of the magnetic layers, and nonmagnetic layers formed between the oxide layers.

摘要翻译： 根据实施例的垂直磁记录介质包括基板和垂直磁记录层。 垂直磁记录层包括记录部分和非记录部分。 记录部分具有沿纵向方向规则排列的图案，并且包括含有Fe或Co和Pt作为主要成分的磁性层和至少一种选自Ti，Si，Al和W的添加剂组分。非记录部分包括氧化物 通过氧化磁性层的侧表面形成的层以及形成在氧化物层之间的非磁性层。