专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08406092B2 Thermally-assisted magnetic recording head 有权
标题翻译：热辅助磁记录头
公开(公告)号：US08406092B2
公开(公告)日：2013-03-26
申请号：US12892391
申请日：2010-09-28
申请人： Satoshi Tomikawa , Shinji Hara
发明人： Satoshi Tomikawa , Shinji Hara
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/1278 , G11B5/3136 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head that includes an air bearing surface facing a recording medium and that performs a magnetic recording while heating the recording medium includes a waveguide configured with a core through which light propagates and a cladding that surrounds a periphery of the core and that includes at least a portion extending to the air bearing surface; and a heat radiation layer that is embedded in the cladding that surrounds the periphery of the core on the air bearing surface, and that is made of a material having a higher thermal conductivity coefficient than the cladding.
摘要翻译：一种热辅助磁记录头，其包括面向记录介质的空气轴承表面并且在加热记录介质的同时执行磁记录，包括配置有光传播的芯的波导和围绕芯周围的包层;以及包括至少一部分延伸到空气支承表面的部分; 以及散热层，其包埋在所述空气轴承表面上围绕所述芯的周边的所述包层中，并且由具有比所述包层更高的导热系数的材料制成。

2. 发明申请

US20130016591A1 THERMALLY-ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING/REPRODUCING DEVICE USING THE SAME 有权
标题翻译：使用其的热辅助磁记录介质和磁记录/再现装置
公开(公告)号：US20130016591A1
公开(公告)日：2013-01-17
申请号：US13182623
申请日：2011-07-14
申请人： Satoshi TOMIKAWA , Tomohito MIZUNO
发明人： Satoshi TOMIKAWA , Tomohito MIZUNO
IPC分类号： G11B5/738 , G11B13/04
CPC分类号： G11B5/7325 , G11B5/314 , G11B2005/0021
摘要： A thermally-assisted magnetic recording (TAMR) medium of the present invention includes: a magnetization direction arrangement layer on a substrate; and a magnetic recording layer on the magnetization direction arrangement layer, wherein the magnetization direction arrangement layer is made of at least one selected from a group consisting of Co, Zr, CoZr, CoTaZr, CoFeTaZrCr, CoNbZr, CoNiZr, FeCoZrBCu, NiFe, FeCo, FeAlN, (FeCo)N, FeAlSi, and FeTaC so that a spreading of the heating spot applied from the magnetic head for thermally-assisted recording to the film surface of the magnetic recording medium is suppressed, and that an SN is improved by arranging the magnetization direction of the perpendicularly written recording magnetization to become identical to a perpendicular direction, and realizing the higher recording density.
摘要翻译：本发明的热辅助磁记录（TAMR）介质包括：基板上的磁化方向排列层; 和磁记录层，磁化方向布置层由选自Co，Zr，CoZr，CoTaZr，CoFeTaZrCr，CoNbZr，CoNiZr，FeCoZrBCu，NiFe，FeCo， FeAlN，（FeCo）N，FeAlSi和FeTaC，从而抑制从用于热辅助记录的磁头施加的加热点到磁记录介质的膜表面的扩散，并且通过将垂直写入的记录磁化的磁化方向变得与垂直方向相同，并且实现更高的记录密度。

3. 发明授权

US07880997B2 Magnetic recording apparatus and magnetic recording medium 失效
标题翻译：磁记录装置和磁记录介质
公开(公告)号：US07880997B2
公开(公告)日：2011-02-01
申请号：US12379763
申请日：2009-02-27
申请人： Akimasa Kaizu , Satoshi Tomikawa , Yoshikazu Soeno
发明人： Akimasa Kaizu , Satoshi Tomikawa , Yoshikazu Soeno
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , B82Y10/00 , G11B5/743 , G11B2005/0005
摘要： In the magnetic recording apparatus, a recording layer is formed in a concavo-convex pattern, and recording elements are formed of convex portions of the concavo-convex pattern. Furthermore, the following equation (I) BL≦ERL≦BL+2×GL (Equation (I)) is satisfied in each of tracks, where BL represents a length of the recording element in a circumferential direction, GL represents a length of a gap between the recording elements in the circumferential direction, and ERL represents an effective recording length which is a length of an effective recording area ER in the circumferential direction, the effective recording area ER being created on a magnetic recording medium by a heating head and a recording head.
摘要翻译：在磁记录装置中，记录层形成为凹凸图案，记录元件由凹凸图案的凸部形成。此外，在每个轨道中满足以下等式（I）BL＆nlE; ERL＆nlE; BL + 2×GL（等式（I）），其中BL表示记录元件在圆周方向上的长度，GL表示记录元件在圆周方向上的间隙，ERL表示作为圆周方向上的有效记录区域ER的长度的有效记录长度，通过加热头在磁记录介质上形成有效记录区域ER，录音头。

4. 发明申请

US20140043707A1 ESTIMATION METHOD OF CURIE TEMPERATURE DISTRIBUTION WIDTH 有权
标题翻译： CURIE温度分布宽度的估计方法
公开(公告)号：US20140043707A1
公开(公告)日：2014-02-13
申请号：US13568572
申请日：2012-08-07
申请人： Satoshi TOMIKAWA , Tomohito MIZUNO
发明人： Satoshi TOMIKAWA , Tomohito MIZUNO
IPC分类号： G11B27/36
CPC分类号： G01R33/12 , G01R33/098
摘要： An estimation method includes a heating step in which a recording bit, on which a reference signal is recorded, is heated under each of heating conditions having different heating temperatures, the recording bit being at least one recording bit in the magnetic recording medium, and a measurement step in which a signal intensity with respect to the reference signal recorded in the recording bit after heating is measured under each of the heating conditions of the heating step. Based on the signal intensities with respect to the reference signal respectively measured in the measurement step, the distribution width of the Curie temperatures of the plurality of magnetic grains that form the magnetic recording layer is estimated.
摘要翻译：估计方法包括：加热步骤，其中记录有参考信号的记录位在具有不同加热温度的每个加热条件下被加热，所述记录位是磁记录介质中的至少一个记录位，以及测量步骤，其中在加热步骤的每个加热条件下测量相对于在加热之后记录在记录位中的参考信号的信号强度。基于相对于在测量步骤中测量的参考信号的信号强度，估计形成磁记录层的多个磁性颗粒的居里温度的分布宽度。

5. 发明授权

US08493818B2 Thermally-assisted magnetic recording head, head gimbal assembly and magnetic recording device 有权
标题翻译：热辅助磁记录头，磁头万向架组件和磁记录装置
公开(公告)号：US08493818B2
公开(公告)日：2013-07-23
申请号：US13182562
申请日：2011-07-14
申请人： Satoshi Tomikawa , Tomohito Mizuno , Katsuki Kurihara
发明人： Satoshi Tomikawa , Tomohito Mizuno , Katsuki Kurihara
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head, includes: a pole that generates a writing magnetic field from an end surface that forms a portion of an air bearing surface opposing a magnetic recording medium; a waveguide through which light for exciting a surface plasmon propagates; a plasmon generator that couples to the light in a surface plasmon mode and generates near-field light from a near-field light generating portion on a near-field light generating end surface that forms the portion of the air bearing surface; and magnetic field focusing parts that are able to focus the writing magnetic field generated from the pole and that are disposed on both sides of the pole in a track width direction from a perspective of the air bearing surface side.
摘要翻译：一种热辅助磁记录头，包括：极，其从形成与磁记录介质相对的空气轴承表面的一部分的端面产生书写磁场; 用于激发表面等离子体激元的光的波导传播; 等离子体发生器，其以表面等离子体模式耦合到所述光，并且在形成所述空气轴承表面的所述部分的近场光产生端面上产生来自近场光产生部分的近场光; 以及磁场聚焦部件，其能够将从极产生的写入磁场聚焦，并且从空气轴承表面侧的角度在轨道宽度方向上设置在磁极的两侧。

6. 发明申请

US20130016592A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD, HEAD GIMBAL ASSEMBLY AND MAGNETIC RECORDING DEVICE 有权
标题翻译：热辅助磁记录头，磁头组件和磁记录装置
公开(公告)号：US20130016592A1
公开(公告)日：2013-01-17
申请号：US13182562
申请日：2011-07-14
申请人： Satoshi TOMIKAWA , Tomohito Mizuno , Katsuki Kurihara
发明人： Satoshi TOMIKAWA , Tomohito Mizuno , Katsuki Kurihara
IPC分类号： G11B13/04
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head, includes: a pole that generates a writing magnetic field from an end surface that forms a portion of an air bearing surface opposing a magnetic recording medium; a waveguide through which light for exciting a surface plasmon propagates; a plasmon generator that couples to the light in a surface plasmon mode and generates near-field light from a near-field light generating portion on a near-field light generating end surface that forms the portion of the air bearing surface; and magnetic field focusing parts that are able to focus the writing magnetic field generated from the pole and that are disposed on both sides of the pole in a track width direction from a perspective of the air bearing surface side.
摘要翻译：一种热辅助磁记录头，包括：极，其从形成与磁记录介质相对的空气轴承表面的一部分的端面产生书写磁场; 用于激发表面等离子体激元的光的波导传播; 等离子体发生器，其以表面等离子体模式耦合到所述光，并且在形成所述空气轴承表面的所述部分的近场光产生端面上产生来自近场光产生部分的近场光; 以及磁场聚焦部件，其能够将从极产生的写入磁场聚焦，并且从空气轴承表面侧的角度在轨道宽度方向上设置在磁极的两侧。

7. 发明授权

US08223611B2 Near-field light generating element and method for forming the element 有权
标题翻译：近场光产生元件及其形成方法
公开(公告)号：US08223611B2
公开(公告)日：2012-07-17
申请号：US12328232
申请日：2008-12-04
申请人： Kosuke Tanaka , Seiichi Takayama , Satoshi Tomikawa
发明人： Kosuke Tanaka , Seiichi Takayama , Satoshi Tomikawa
IPC分类号： G11B7/00 , G11B7/135
CPC分类号： G11B5/3163 , G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a method for forming a near-field light generating element, which is capable of sufficiently suppressing the unevenness of a waveguide surface and the distortion within the waveguide. The forming method comprises the steps of: forming a first etching stopper layer on a lower waveguide layer; forming a second etching stopper layer; forming, on the second etching stopper layer, a plasmon antenna material layer; performing etching with the second etching stopper layer used as a stopper, to form a first side surface of plasmon antenna; forming a side-surface protecting mask so as to cover the first side surface; and performing etching with the first and second etching stopper layers used as stoppers, to form the second side surface. By providing the first and second etching stopper layer, over-etching can be prevented even when each etching process takes enough etch time, which allows easy management of etching endpoints.
摘要翻译：本发明提供一种形成近场光产生元件的方法，其能够充分地抑制波导表面的不均匀性和波导内的变形。成形方法包括以下步骤：在下波导层上形成第一蚀刻阻挡层; 形成第二蚀刻停止层; 在第二蚀刻停止层上形成等离子体激元天线材料层; 用作为阻挡件的第二蚀刻阻挡层进行蚀刻，以形成等离子体激元的第一侧表面; 形成侧面保护罩以覆盖第一侧面; 并且利用用作塞子的第一和第二蚀刻阻挡层进行蚀刻，以形成第二侧表面。通过设置第一和第二蚀刻停止层，即使每个蚀刻工艺都需要足够的蚀刻时间，也可以防止过蚀刻，这允许蚀刻端点的容易管理。

8. 发明授权

US08116172B2 Near-field light generating device including surface plasmon generating element 有权
标题翻译：近场光产生装置包括表面等离子体激元产生元件
公开(公告)号：US08116172B2
公开(公告)日：2012-02-14
申请号：US12320930
申请日：2009-02-09
申请人： Yasuhiro Ito , Seiichi Takayama , Eiji Komura , Koji Shimazawa , Satoshi Tomikawa , Shuichi Okawa
发明人： Yasuhiro Ito , Seiichi Takayama , Eiji Komura , Koji Shimazawa , Satoshi Tomikawa , Shuichi Okawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B7/122 , G11B7/1387 , G11B11/10534 , G11B11/1058 , G11B2005/0005 , G11B2005/0021
摘要： A near-field light generating device includes: a base having a top surface; a waveguide that allows laser light to propagate therethrough and is disposed above the top surface of the base; and a surface plasmon generating element that is disposed above the top surface of the base so as to adjoin the waveguide in a direction parallel to the top surface of the base. The waveguide has a side surface that faces the surface plasmon generating element. The surface plasmon generating element includes: a coupling part that is opposed to a part of the side surface of the waveguide with spacing therebetween and causes excitation of a surface plasmon by coupling with evanescent light occurring from the part of the side surface; and a near-field light generating part that generates near-field light based on the surface plasmon excited at the coupling part.
摘要翻译：近场光产生装置包括：具有顶表面的底座; 波导，其允许激光通过其传播并设置在基座的顶表面上方; 以及表面等离子体激元产生元件，其设置在所述基座的顶表面之上，以便在与所述基座的顶表面平行的方向上邻接所述波导。波导具有面向表面等离子体激元产生元件的侧表面。表面等离子体发生元件包括：耦合部分，其与波导的侧表面的一部分相对，并且通过与从侧表面的部分发生的渐逝光耦合而引起表面等离子体激发; 以及基于在耦合部激发的表面等离子体激元产生近场光的近场光产生部。

9. 发明授权

US08000178B2 Near-field light generating element utilizing surface plasmon 有权
标题翻译：利用表面等离子体激元的近场光产生元件
公开(公告)号：US08000178B2
公开(公告)日：2011-08-16
申请号：US12260639
申请日：2008-10-29
申请人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
发明人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/4866 , G11B2005/001 , G11B2005/0021
摘要： Provided is a surface plasmon antenna that can be set so that the emitting position on the end surface of the plasmon antenna where near-field light is emitted is located sufficiently close to the end of a magnetic pole. The surface plasmon antenna comprises an edge having a portion for coupling with a light in a surface plasmon mode. The edge is provided for propagating surface plasmon excited by the light and extends from the portion to a near-field light generating end surface that emits near-field light. The edge for propagating surface plasmon is a very narrow propagation region. Therefore, the near-field light generating end surface, which appears as a polished surface processed through polishing in the manufacturing of the plasmon antenna, can be made a shape with a very small size, and further can be set so that surface plasmon propagates to reach the end surface reliably.
摘要翻译：提供了一种表面等离子体激元天线，其可以被设置为使得发射近场光的等离子体激元天线的端面上的发射位置足够靠近磁极的端部。表面等离子体激元天线包括具有用于与表面等离子体激元模式的光耦合的部分的边缘。该边缘用于传播由光激发的表面等离子体激元，并从该部分延伸到发射近场光的近场光产生端面。传播表面等离子体激元的边缘是非常窄的传播区域。因此，通过在等离子体激元天线的制造中通过研磨处理的抛光面的近场光产生端面可以形成为非常小的形状，并且还可以将表面等离子体激元传播到可靠地到达端面。

10. 发明授权

US07855937B2 Near-field light generating element and heat-assisted magnetic recording head utilizing surface plasmon mode 有权
标题翻译：近场光产生元件和利用表面等离激元模式的热辅助磁记录头
公开(公告)号：US07855937B2
公开(公告)日：2010-12-21
申请号：US12205484
申请日：2008-09-05
申请人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
发明人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/4866 , G11B11/10536 , G11B11/1058 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a near-field light generating element capable of avoiding excessive temperature rise, which comprises a waveguide and a near-field light generating layer. The layer comprises: a propagation surface on which surface plasmon excited by the light propagates; and a near-field light generating end at which near-field light is generated. The end is one end of the propagation surface. And a portion of the side surface of the waveguide is opposed to a portion of the propagation surface of the near-field light generating layer with a predetermined spacing so that the light propagating through the waveguide is coupled with the near-field light generating layer in a surface plasmon mode. The near-field light generating layer is preferably tapered toward the near-field light generating end.
摘要翻译：本发明提供能够避免温度过高的近场光发生元件，其包括波导管和近场光产生层。该层包括：由光激发的表面等离子体激发的传播表面; 以及产生近场光的近场光产生端。最后是传播表面的一端。并且波导的侧面的一部分与近场光产生层的传播表面的一部分以预定的间隔相对，使得通过波导传播的光与近场光产生层耦合表面等离子体激元模式。近场光产生层优选地朝向近场光产生端逐渐变细。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式