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1.发明授权Method of forming a TAMR writer with a concave leading shield for enhanced field magnitude 有权用于形成具有用于增强场强的凹形前导屏蔽的TAMR写入器的方法公开(公告)号：US09330690B2
公开(公告)日：2016-05-03
申请号：US14139051
申请日：2013-12-23
Applicant: Headway Technologies, Inc.
Inventor： Yiming Wang , Tobias Maletzky , Xuhui Jin , Dayu Zhou , Joe Smyth , Moris Dovek
CPC classification number: G11B5/112 , G11B5/1278 , G11B5/314 , G11B5/6088 , G11B2005/0021 , Y10T29/49048
Abstract: A method of forming a TAMR (Thermal Assisted Magnetic Recording) write head that uses the energy of optical-laser excited plasmons to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The magnetic field of the write head is enhanced by the formation of a leading shield that is formed in a concave geometrical shape and partially surrounds the waveguide portion of the head within the concavity, which allows the distal end of the waveguide to extend to the ABS plane of the write head. This arrangement reduces the gap between the shield and the magnetic pole and does not interfere with the ability of the waveguide to efficiently transfer its optical energy to the plasmon generator and, ultimately, to the surface of the magnetic recording medium.
Abstract translation: 一种形成TAMR（热辅助磁记录）写头的方法，其使用光激光激发等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。 通过形成形成为凹形几何形状并且部分地围绕凹部内的头部的波导部分的前屏蔽件的形成来增强写入头的磁场，这允许波导的远端延伸到ABS 写头的平面。 这种布置减小了屏蔽和磁极之间的间隙，并且不干扰波导有效地将其光能传递到等离子体激元发生器并且最终传递到磁记录介质的表面的能力。
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公开(公告)号：US10943613B1
公开(公告)日：2021-03-09
申请号：US16817705
申请日：2020-03-13
Applicant: SAE Magnetics (H.K.) Ltd. , Headway Technologies, Inc.
Inventor： Ryo Hosoi , Takashi Honda , Seiichi Takayama , Sik Fun Chan , Tai Boon Lee , Dayu Zhou
Abstract: A thermally assisted magnetic head including a slider and a light source-unit. The slider includes a slider substrate and a magnetic head part. The light source-unit includes a laser diode and a sub-mount. The magnetic head part includes a medium-opposing surface, a light source-opposing surface and a waveguide which guides laser light from the light source-opposing surface to the medium-opposing surface. The slider substrate includes a light source-cavity formed in a light source-placing surface on which the light source-unit is placed. The light source-cavity includes an opening concave part being formed larger than a mount bottom surface of the sub-mount. The mount bottom surface of the sub-mount is inserted into the opening concave part to be joined to the light source-cavity.
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公开(公告)号：US10566013B1
公开(公告)日：2020-02-18
申请号：US16250131
申请日：2019-01-17
Applicant: SAE Magnetics (H.K.) Ltd. , Headway Technologies, Inc.
Inventor： Takashi Honda , Ryo Hosoi , Wah Chun Chan , Makoto Kawato , Dayu Zhou , Koji Shimazawa , Kowang Liu
IPC: G11B11/105 , G11B5/012 , G11B5/00 , G11B5/31 , G11B5/60
Abstract: A light source unit for thermally-assisted magnetic head includes a substrate member having a bonding surface, multiple layers formed on the bonding surface and comprising a base layer, a connection pad layer, an insulation layer and a bonding layer; a light source assembly attached on the bonding layer of the substrate member and having a laser diode embedded therein and connected to the connection pad layer on the bonding surface, so as to form a laser diode circuit; and a heater buried in the insulation layer and connected to the connection pad layer, so as to form a heater circuit. The light source unit can maintain stable heat power for facilitating performance of the thermally-assisted magnetic head, and further reduce the sizes of the light source unit and substrate member.
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公开(公告)号：US08755256B2
公开(公告)日：2014-06-17
申请号：US13676490
申请日：2012-11-14
Applicant: Headway Technologies, Inc.
Inventor： Tobias Maletzky , Xuhui Jin , Yiming Wang , Dayu Zhou , Joe Smyth , Moris Dovek
IPC: G11B11/00
CPC classification number: G11B13/04 , G02B6/1226 , G11B5/314 , G11B5/6088 , G11B2005/0021
Abstract: A TAMR (Thermal Assisted Magnetic Recording) write head uses the near field energy of optical-laser excited plasmon eigenmodes in a plasmon resonator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The plasmon resonator is formed as a conducting disk-shaped structure with an extending peg that serves to further confine the near fields within a small region of the recording medium. The resonator eigenmodes are excited, through direct or evanescent coupling, by an interference pattern formed by the overlap of optical waves within a dual-channel waveguide, the interference pattern being the result of the waves in one branch being phase-shifted relative to the waves in the other branch.
Abstract translation: TAMR（热辅助磁记录）写头使用等离子体激元谐振器中的激光激发等离子体激元等离子体本征模态的近场能来局部加热磁记录介质并降低其矫顽力和磁各向异性。 等离子体激元谐振器形成为具有延伸钉的导电盘形结构，其用于进一步将近场限制在记录介质的小区域内。 谐振器本征模通过直接或消逝耦合被由双通道波导内的光波重叠形成的干涉图形激发，干涉图案是一个分支中相对于波相移的结果的结果 在另一个分支。
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公开(公告)号：US20140133283A1
公开(公告)日：2014-05-15
申请号：US13676490
申请日：2012-11-14
Applicant: HEADWAY TECHNOLOGIES, INC.
Inventor： Tobias Maletzky , Xuhui Jin , Yiming Wang , Dayu Zhou , Joe Smyth , Moris Dovek
IPC: G11B13/04
CPC classification number: G11B13/04 , G02B6/1226 , G11B5/314 , G11B5/6088 , G11B2005/0021
Abstract: A TAMR (Thermal Assisted Magnetic Recording) write head uses the near field energy of optical-laser excited plasmon eigenmodes in a plasmon resonator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The plasmon resonator is formed as a conducting disk-shaped structure with an extending peg that serves to further confine the near fields within a small region of the recording medium. The resonator eigenmodes are excited, through direct or evanescent coupling, by an interference pattern formed by the overlap of optical waves within a dual-channel waveguide, the interference pattern being the result of the waves in one branch being phase-shifted relative to the waves in the other branch.
Abstract translation: TAMR（热辅助磁记录）写头使用等离子体激元谐振器中的激光激发等离子体激元等离子体本征模态的近场能来局部加热磁记录介质并降低其矫顽力和磁各向异性。 等离子体激元谐振器形成为具有延伸钉的导电盘形结构，其用于进一步将近场限制在记录介质的小区域内。 谐振器本征模通过直接或消逝耦合被由双通道波导内的光波重叠形成的干涉图形激发，干涉图案是一个分支中相对于波相移的结果的结果 在另一个分支。
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Patent Agency Ranking
公开(公告)号：US20140112115A1
公开(公告)日：2014-04-24
申请号：US13654490
申请日：2012-10-18
Applicant: HEADWAY TECHNOLOGIES, INC.
Inventor： Xuhui Jin , Hiroyuki Ito , Shigeki Tanemura , Dayu Zhou
CPC classification number: G11B5/314 , G11B5/3163 , G11B2005/0021
Abstract: Three structures, and processes for manufacturing them, that improve the performance of a TAMR feature in a magnetic write head are disclosed. This improvement is achieved by making the separation between the edge plasmon generator and the plasmon shield less than the separation between the edge plasmon generator and the optical wave-guide.
Abstract translation: 公开了三种结构及其制造方法，其改进磁写头中的TAMR特征的性能。 这种改进通过使边缘等离子体发生器和等离子体屏蔽之间的分离小于边缘等离子体发生器和光波导之间的间隔来实现。
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7.发明授权公开(公告)号：US08630153B1
公开(公告)日：2014-01-14
申请号：US13668468
申请日：2012-11-05
Applicant: Headway Technologies, Inc.
Inventor： Yiming Wang , Tobias Maletzky , Xuhui Jin , Dayu Zhou , Joe Smyth , Moris Dovek
IPC: G11B11/00
CPC classification number: G11B5/112 , G11B5/1278 , G11B5/314 , G11B5/6088 , G11B2005/0021 , Y10T29/49048
Abstract: A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser excited plasmons to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The magnetic field of the write head is enhanced by the formation of a leading shield that is formed in a concave geometrical shape and partially surrounds the waveguide portion of the head within the concavity, which allows the distal end of the waveguide to extend to the ABS plane of the write head. This arrangement reduces the gap between the shield and the magnetic pole and does not interfere with the ability of the waveguide to efficiently transfer its optical energy to the plasmon generator and, ultimately, to the surface of the magnetic recording medium.
Abstract translation: TAMR（热辅助磁记录）写头使用光激光激发等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。 通过形成形成为凹形几何形状并且部分地围绕凹部内的头部的波导部分的前屏蔽件的形成来增强写入头的磁场，这允许波导的远端延伸到ABS 写头的平面。 这种布置减小了屏蔽和磁极之间的间隙，并且不干扰波导有效地将其光能传递到等离子体激元发生器并且最终传递到磁记录介质的表面的能力。
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公开(公告)号：US08773803B2
公开(公告)日：2014-07-08
申请号：US13654490
申请日：2012-10-18
Applicant: Headway Technologies, Inc.
Inventor： Xuhui Jin , Hiroyuki Ito , Shigeki Tanemura , Dayu Zhou
IPC: G11B5/02
CPC classification number: G11B5/314 , G11B5/3163 , G11B2005/0021
Abstract: Three structures, and processes for manufacturing them, that improve the performance of a TAMR feature in a magnetic write head are disclosed. This improvement is achieved by making the separation between the edge plasmon generator and the plasmon shield less than the separation between the edge plasmon generator and the optical wave-guide.
Abstract translation: 公开了三种结构及其制造方法，其改进磁写头中的TAMR特征的性能。 这种改进通过使边缘等离子体发生器和等离子体屏蔽之间的分离小于边缘等离子体发生器和光波导之间的间隔来实现。
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9.发明授权Thermal assisted magnetic recording spot-size converter with finite ridge width 有权具有有限脊宽的热辅助磁记录光斑尺寸转换器公开(公告)号：US09460740B1
公开(公告)日：2016-10-04
申请号：US14880385
申请日：2015-10-12
Applicant: Headway Technologies, Inc.
Inventor： Matteo Staffaroni , Xuhui Jin , Weihao Xu , Jianing Zhou , Ya-An Yang , Dayu Zhou
CPC classification number: G11B5/6088 , G02B6/0013 , G02B6/0028 , G02B6/1228 , G02B6/14 , G02B2006/12152 , G02B2006/12195 , G11B5/314 , G11B2005/0021
Abstract: A thermally assisted magnetic recording head is disclosed having a spot size converter with at least one secondary waveguide adjoining a top or bottom surface of a primary waveguide. Each waveguide has tapered sides but the secondary waveguide is tapered at a greater angle over a shorter taper distance in order to couple propagated light into the primary waveguide before the front end of the taper. The secondary waveguide terminates in a ridge with a fixed width w3 of about 50-170 nm that is between the front end of the taper and the air bearing surface (ABS). The ridge enables transverse magnetic (TM) transmission mode efficiency above 90% even with a typical process misalignment in the cross-track and height directions. The primary waveguide has a front section with width w2 between an end of its tapered sides and the ABS where w2 is substantially larger than w3.
Abstract translation: 公开了一种热辅助磁记录头，其具有光斑尺寸转换器，其具有邻近初级波导的顶表面或底表面的至少一个次级波导。 每个波导具有锥形侧面，但是次级波导在更短的锥形距离上以更大的角度逐渐变细，以便在锥形前端之前将传播的光耦合到主波导中。 次级波导终止于锥形前端与空气支承表面（ABS）之间的固定宽度w3约为50-170nm的脊。 即使在交叉轨道和高度方向上的典型工艺不对准，该脊也能使横向磁（TM）传输模式效率高于90％。 主波导具有在其锥形侧面的端部之间的宽度w2的前部以及w2基本上大于w3的ABS。
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10.发明申请Method of Forming a TAMR Writer with a Concave Leading Shield for Enhanced Field Magnitude 审中-公开形成具有增强场强的凹面屏蔽的TAMR写入器的方法公开(公告)号：US20140123473A1
公开(公告)日：2014-05-08
申请号：US14139051
申请日：2013-12-23
Applicant: Headway Technologies, Inc.
Inventor： Yiming Wang , Tobias Maletzky , Xuhui Jin , Dayu Zhou , Joe Smyth , Moris Dovek
IPC: G11B5/11
CPC classification number: G11B5/112 , G11B5/1278 , G11B5/314 , G11B5/6088 , G11B2005/0021 , Y10T29/49048
Abstract: A method of forming a TAMR (Thermal Assisted Magnetic Recording) write head that uses the energy of optical-laser excited plasmons to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The magnetic field of the write head is enhanced by the formation of a leading shield that is formed in a concave geometrical shape and partially surrounds the waveguide portion of the head within the concavity, which allows the distal end of the waveguide to extend to the ABS plane of the write head. This arrangement reduces the gap between the shield and the magnetic pole and does not interfere with the ability of the waveguide to efficiently transfer its optical energy to the plasmon generator and, ultimately, to the surface of the magnetic recording medium.
Abstract translation: 一种形成TAMR（热辅助磁记录）写头的方法，其使用光激光激发等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。 通过形成形成为凹形几何形状并且部分地围绕凹部内的头部的波导部分的前屏蔽件的形成来增强写入头的磁场，这允许波导的远端延伸到ABS 写头的平面。 这种布置减小了屏蔽和磁极之间的间隙，并且不干扰波导有效地将其光能传递到等离子体激元发生器并且最终传递到磁记录介质的表面的能力。
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