公开(公告)号：US09792929B1

公开(公告)日：2017-10-17

申请号：US15438258

申请日：2017-02-21

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Yukinori Ikegawa ,  Shigeki Tanemura ,  Hironori Araki

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Yukinori Ikegawa ,  Shigeki Tanemura ,  Hironori Araki

IPC分类号： G11B5/17 ,  G11B5/31

CPC分类号： G11B5/17 ,  G11B5/3123 ,  G11B5/313

摘要： A magnetic head includes a medium facing surface, a coil, a main pole, a write shield, and a first and a second return path section. The first return path section is located on the leading side of the main pole. The coil includes a specific coil element passing through a space defined by main pole, a gap section, write shield and first return path section. The main pole has a bottom end including a first portion and a second portion, the second portion being farther from medium facing surface than is the first portion. The specific coil element has a rear end farthest from medium facing surface. The distance from medium facing surface to rear end of the specific coil element is smaller than or equal to the distance from the medium facing surface to the boundary between the first portion and the second portion.

公开(公告)号：US11410688B1

公开(公告)日：2022-08-09

申请号：US17347992

申请日：2021-06-15

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hironori Araki ,  Yoji Nomura ,  Yukinori Ikegawa ,  Weihao Xu

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hironori Araki ,  Yoji Nomura ,  Yukinori Ikegawa ,  Weihao Xu

IPC分类号： G11B11/105 ,  G11B5/127 ,  G11B7/1387 ,  G11B5/60 ,  G11B5/00 ,  G11B5/48

摘要： A thermally-assisted magnetic recording head includes a medium facing surface, a main pole, a waveguide, and a plasmon generator. A second metal layer of the plasmon generator includes a second front end facing the medium facing surface. A third metal layer of the plasmon generator includes a narrow portion located on the second metal layer. The narrow portion includes a front end face located in the medium facing surface and configured to generate near-field light from a surface plasmon, and a rear end opposite the front end face. The rear end is located farther from the medium facing surface than is the second front end.

公开(公告)号：US08691102B1

公开(公告)日：2014-04-08

申请号：US13731754

申请日：2012-12-31

申请人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Yukinori Ikegawa ,  Seiichiro Tomita ,  Shigeki Tanemura

发明人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Yukinori Ikegawa ,  Seiichiro Tomita ,  Shigeki Tanemura

IPC分类号： C03C15/00

CPC分类号： G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

摘要： A method of manufacturing a plasmon generator includes the steps of: forming an etching mask on a dielectric layer; forming an accommodation part by etching the dielectric layer using the etching mask; and forming the plasmon generator to be accommodated in the accommodation part. The step of forming the etching mask includes the steps of: forming a patterned layer on an etching mask material layer, the patterned layer having a first opening that has a sidewall; forming a structure by forming an adhesion film on the sidewall, the structure having a second opening smaller than the first opening; and etching a portion of the etching mask material layer exposed from the second opening.

摘要翻译： 一种制造等离子体发生器的方法包括以下步骤：在电介质层上形成蚀刻掩模; 通过使用蚀刻掩模蚀刻电介质层来形成容纳部分; 以及形成要容纳在容纳部分中的等离子体发生器。 形成蚀刻掩模的步骤包括以下步骤：在蚀刻掩模材料层上形成图案化层，所述图案化层具有具有侧壁的第一开口; 通过在侧壁上形成粘合膜来形成结构，该结构具有比第一开口小的第二开口; 并蚀刻从第二开口露出的蚀刻掩模材料层的一部分。

公开(公告)号：US09958769B1

公开(公告)日：2018-05-01

申请号：US15387066

申请日：2016-12-21

申请人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Seiichiro Tomita ,  Shigeki Tanemura ,  Yukinori Ikegawa

发明人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Seiichiro Tomita ,  Shigeki Tanemura ,  Yukinori Ikegawa

IPC分类号： G03F1/38 ,  G03F7/09 ,  G11B5/31 ,  G11B5/00

CPC分类号： G03F1/38 ,  G03F7/094 ,  G11B5/3169 ,  G11B2005/0021

摘要： A plasmon generator including a wide portion and a narrow portion is manufactured by etching an initial plasmon generator using an etching mask. The etching mask includes a first mask layer for defining the shape of one of the narrow portion and the wide portion, and a second mask layer for defining the shape of the other of the narrow portion and the wide portion. The etching mask is formed by forming a first hard mask, a second initial mask layer and a second hard mask in this order on a first initial mask layer, and etching the first and second initial mask layers by using the first and second hard masks.

公开(公告)号：US09640202B2

公开(公告)日：2017-05-02

申请号：US13856109

申请日：2013-04-03

申请人： Shigeki Tanemura ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Yukinori Ikegawa ,  Hironori Araki ,  Seiichiro Tomita

发明人： Shigeki Tanemura ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Yukinori Ikegawa ,  Hironori Araki ,  Seiichiro Tomita

IPC分类号： G11B5/00 ,  G11B5/31 ,  G11B5/60 ,  G11B5/84

CPC分类号： G11B5/3163 ,  G11B5/314 ,  G11B5/6088 ,  G11B5/84 ,  G11B2005/0021 ,  Y10T29/49032

摘要： A method of manufacturing a plasmon generator includes the steps of: forming an initial film made of a metal polycrystal and including a pre-plasmon-generator portion that later becomes the plasmon generator; heating the initial film with heating light so that a plurality of crystal grains constituting the metal polycrystal grow at least in the pre-plasmon-generator portion; stopping the heating of the initial film; and forming the plasmon generator by processing the initial film after the step of stopping the heating. The step of forming the plasmon generator includes the step of providing the pre-plasmon-generator portion with a front end face that generates near-field light.

公开(公告)号：US09330702B2

公开(公告)日：2016-05-03

申请号：US14041607

申请日：2013-09-30

申请人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Yukinori Ikegawa

发明人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Yukinori Ikegawa

IPC分类号： G11B5/187 ,  G11B5/31 ,  G11B5/127 ,  G11B5/60 ,  G02B6/00 ,  G11B5/40 ,  G11B5/00

CPC分类号： G11B5/6088 ,  G02B6/00 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3133 ,  G11B5/3136 ,  G11B5/314 ,  G11B5/40 ,  G11B2005/0021 ,  G11B2005/0024

摘要： A thermally-assisted magnetic recording head includes a main pole, a waveguide, a plasmon generator, and a heat sink. The heat sink includes a first metal layer, a second metal layer, and an intermediate layer. The intermediate layer is interposed between the first metal layer and the second metal layer. Each of the first and second metal layers is formed of a metal material. The intermediate layer is formed of a material that is higher in Vickers hardness than the metal material used to form the first metal layer and the metal material used to form the second metal layer.

摘要翻译： 热辅助磁记录头包括主极，波导，等离子体激元发生器和散热器。 散热器包括第一金属层，第二金属层和中间层。 中间层介于第一金属层和第二金属层之间。 第一和第二金属层中的每一个由金属材料形成。 中间层由维氏硬度高于用于形成第一金属层的金属材料和用于形成第二金属层的金属材料形成的材料形成。

公开(公告)号：US10545287B1

公开(公告)日：2020-01-28

申请号：US16206058

申请日：2018-11-30

申请人： Yukinori Ikegawa ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hironori Araki

发明人： Yukinori Ikegawa ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hironori Araki

IPC分类号： G02B6/122 ,  G02B6/126 ,  G02B6/136 ,  G11B5/48 ,  G11B5/00

摘要： A manufacturing method for a waveguide includes forming a core including a first and a second layer. The first layer has a top surface including a first region opposed to a bottom surface of the second layer, and a second region not opposed to the bottom surface of the second layer. Forming the core includes a step of forming an initial first layer, an etching stopper layer on the second region of the top surface of the initial first layer, an initial second layer on the initial first layer and the etching stopper layer, and a step of etching the initial second layer until the etching stopper layer is exposed, to make the initial second layer into the second layer. A difference between the refractive index of the etching stopper layer and the core is smaller than or equal to 10% of the refractive index of the core.

公开(公告)号：US08416528B1

公开(公告)日：2013-04-09

申请号：US13463298

申请日：2012-05-03

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Yukinori Ikegawa ,  Atsushi Iijima ,  Tatsuya Shimizu

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Yukinori Ikegawa ,  Atsushi Iijima ,  Tatsuya Shimizu

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49048

摘要： A magnetic head includes a main pole and a return path section located above a top surface of a substrate. The main pole has an end face located in a medium facing surface. The return path section is located on the front side in the direction of travel of a recording medium relative to the main pole and is farther from the top surface of the substrate than is the main pole. The return path section has: a front end face located on the front side of the main pole in the medium facing surface; and an inclined surface located on the front side and connected to the front end face. The inclined surface is not exposed in the medium facing surface. An angle greater than 90° is formed between the front end face and the inclined surface.

摘要翻译： 磁头包括位于基板的顶表面上方的主极和返回路径部分。 主极具有位于面向介质的表面中的端面。 返回路径部分位于记录介质相对于主极的行进方向的前侧，并且比主极更远离基板的顶表面。 返回路径部分具有：位于介质面对表面中的主极的前侧上的前端面; 以及位于前侧并且连接到前端面的倾斜表面。 倾斜表面不会暴露在面向介质的表面上。 在前端面和倾斜面之间形成大于90°的角度。

公开(公告)号：US08867169B2

公开(公告)日：2014-10-21

申请号：US13473159

申请日：2012-05-16

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Yukinori Ikegawa ,  Atsushi Iijima ,  Tatsuya Shimizu

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Yukinori Ikegawa ,  Atsushi Iijima ,  Tatsuya Shimizu

IPC分类号： G11B5/127 ,  G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3123 ,  G11B5/315 ,  G11B5/3163

摘要： A magnetic head includes a magnetic structure incorporating a write shield. The magnetic structure is formed to include a first magnetic layer, a second magnetic layer stacked on the first magnetic layer, and a seed layer. The first magnetic layer has a front end face located in the medium facing surface and a top surface. The second magnetic layer has a front end face located in the medium facing surface and a bottom surface. The top surface of the first magnetic layer includes a first region including an end located in the medium facing surface and a second region farther from the medium facing surface than the first region. The seed layer is not present on the first region of the top surface of the first magnetic layer but is present on the second region.

摘要翻译： 磁头包括结合有写入屏蔽的磁性结构。 磁结构形成为包括第一磁性层，堆叠在第一磁性层上的第二磁性层和种子层。 第一磁性层具有位于介质相对表面中的前端面和顶面。 第二磁性层具有位于介质面向表面中的前端面和底面。 第一磁性层的顶表面包括第一区域和第二区域，第一区域包括位于介质面向表面中的端部以及比介质面向表面比第一区域更远的第二区域。 种子层不存在于第一磁性层的顶表面的第一区域上，但存在于第二区域上。

公开(公告)号：US09704513B2

公开(公告)日：2017-07-11

申请号：US14930084

申请日：2015-11-02

申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Yukinori Ikegawa ,  Shigeki Tanemura ,  Kenichi Takano

发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Kazuki Sato ,  Yukinori Ikegawa ,  Shigeki Tanemura ,  Kenichi Takano

IPC分类号： G11B5/17 ,  G11B5/31 ,  G11B5/127

CPC分类号： G11B5/17 ,  G11B5/1278 ,  G11B5/3123

摘要： A magnetic head includes a coil, a main pole and a return path section. The return path section is located on the trailing side relative to the main pole so that a space is defined between the main pole and itself. The coil includes a first winding portion and a second winding portion connected in series. The first winding portion extends to pass through the aforementioned space, and extends once around the entire perimeter of the main pole as viewed from the medium facing surface. The second winding portion does not pass through the aforementioned space, and surrounds only a part of the entire perimeter of the main pole as viewed from the medium facing surface.