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51. 发明授权

US09646636B2 Methods of manufacturing magnetic heads using a trigger reader electronic lapping guide 有权
公开(公告)号：US09646636B2
公开(公告)日：2017-05-09
申请号：US14942179
申请日：2015-11-16
申请人： Seagate Technology LLC
发明人： Jeffrey R. O'Konski , Garrick F. Shurts , Greg A. Schmitz , Gregory P. Shaffer
IPC分类号： G11B5/31 , G11B5/48 , B24B37/013 , B24B37/04 , B24B49/10 , G11B5/147 , G11B5/187 , G11B5/60
CPC分类号： G11B5/4826 , B24B37/013 , B24B37/048 , B24B49/10 , G11B5/147 , G11B5/187 , G11B5/3166 , G11B5/3169 , G11B5/3173 , G11B5/6082
摘要： A method of manufacturing a magnetic read-write head, including the steps of presenting a row bar to a processing location, the row bar including an air bearing surface, at least one read-write head, at least one electronic lapping guide, and at least one trigger device, wherein each electronic lapping guide is positioned at a different distance from the air bearing surface than each trigger device, and wherein the read-write head and at least one of the trigger devices include a multi-layer stack of materials; lapping the air bearing surface while measuring the electrical resistance of at least one electronic lapping guide and at least one trigger device until the resistance measurement of the trigger device provides an open circuit reading, and measuring an offset resistance value of the at least one electronic lapping guide concurrently with the measurement of the open circuit reading by the trigger device.

52. 发明授权

US09460769B2 Electric field ferromagnetic resonance excitation method and magnetic function element employing same 有权
标题翻译：电场铁磁共振激励法和磁功能元件采用相同
公开(公告)号：US09460769B2
公开(公告)日：2016-10-04
申请号：US14240158
申请日：2012-06-18
申请人： Takayuki Nozaki , Yoshishige Suzuki
发明人： Takayuki Nozaki , Yoshishige Suzuki
IPC分类号： G11B5/147 , G11C11/16 , H01L29/66 , H01L43/08 , H03B15/00 , H01F41/30 , B82Y40/00 , H01F10/32
CPC分类号： G11C11/1675 , B82Y40/00 , G11B5/147 , G11C11/2275 , H01F10/3254 , H01F10/3286 , H01F10/329 , H01F41/303 , H01L29/66984 , H01L43/08 , H03B15/006
摘要： To realize an electric field-driven type ferromagnetic resonance excitation method of low power consumption using an electric field as drive power, and provide a spin wave signal generation element and a spin current signal generation element using the method, a logic element using the elements, and a magnetic function element such as a high-frequency detection element and a magnetic recording device using the method. A magnetic field having a specific magnetic field application angle and magnetic field strength is applied to a laminate structure in which an ultrathin ferromagnetic layer sufficiently thin so that an electric field shield effect by conduction electrons does not occur and a magnetic anisotropy control layer are directly stacked on each other and an insulation barrier layer and an electrode layer are arranged in order on an ultrathin ferromagnetic layer side. An electric field having a high-frequency component of a magnetic resonance frequency is then applied between the magnetic anisotropy control layer and the electrode layer, thereby efficiently exciting ferromagnetic resonance in the ultrathin ferromagnetic layer.
摘要翻译：为了实现使用电场作为驱动功率的低功耗的电场驱动型铁磁共振激励方法，并且使用该方法提供自旋波信号生成元件和自旋电流信号生成元件，使用这些元件的逻辑元件，以及诸如高频检测元件的磁功能元件和使用该方法的磁记录装置。将具有特定磁场施加角和磁场强度的磁场施加到其中极薄铁磁层足够薄以致不会发生通过传导电子的电场屏蔽效应并且磁各向异性控制层直接堆叠的层叠结构并且绝缘阻挡层和电极层依次布置在超薄铁磁层一侧。然后，在磁各向异性控制层和电极层之间施加具有磁共振频率的高频分量的电场，从而有效地激励超薄铁磁层中的铁磁共振。

53. 发明授权

US09384769B2 Write pole configuration 有权
标题翻译：写极配置
公开(公告)号：US09384769B2
公开(公告)日：2016-07-05
申请号：US14867573
申请日：2015-09-28
申请人： Seagate Technology LLC
发明人： Jiaoming Qiu , Lei Lu , Xuelian Xu
IPC分类号： G11B5/147 , G11B5/60 , G11B5/127
CPC分类号： G11B5/6082 , G11B5/1272 , G11B5/1278 , G11B5/147 , G11B5/17 , G11B5/3116 , G11B5/3123
摘要： A write head having a write pole with a tip portion defining a pole tip and a paddle portion extending from the tip portion away from the pole tip, the paddle portion defining a back edge. The write head also has a coil structure having at least two active turns crossing the paddle portion, wherein a back of the coil structure is no more than 1 micrometer past the back edge of the write pole. In some implementations, a length from the pole tip to the back edge is no more than 4.5 micrometers.
摘要翻译：一种具有写入极的写入头，其具有限定极尖的尖端部分和从所述尖端部分远离所述极尖端延伸的桨状部分，所述桨形部分限定了后缘。写头还具有线圈结构，该线圈结构具有至少两个与该桨叶部分相交的活动匝，其中线圈结构的背面经过写入极的后边缘不超过1微米。在一些实施方案中，从极尖到后缘的长度不超过4.5微米。

54. 发明申请

US20160171992A1 PROCESS FOR MAKING PMR WRITER WITH NON-CONFORMAL SIDE GAPS 有权
标题翻译：制造具有非一致性GAPS的PMR写入的过程
公开(公告)号：US20160171992A1
公开(公告)日：2016-06-16
申请号：US15053211
申请日：2016-02-25
申请人： Western Digital (Fremont), LLC
发明人： JINQIU ZHANG , FENG LIU , XIAOYU YANG , MING JIANG , XIAOTIAN ZHOU , ZEYU MA , HAI SUN
IPC分类号： G11B5/127 , G11B5/60
CPC分类号： G11B5/1278 , G11B5/10 , G11B5/11 , G11B5/112 , G11B5/147 , G11B5/187 , G11B5/1878 , G11B5/232 , G11B5/235 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/315 , G11B5/3163 , G11B5/6082 , H01L21/0272 , H01L21/32134 , H01L21/32139 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043
摘要： A process for manufacturing a PMR writer main pole with non-conformal side gaps is provided. The process may include depositing a stitch layer comprising a magnetic material and a second stich layer material over a substrate, forming an air-bearing surface (ABS) region in a first damascene material, and forming a yoke region in a second damascene material. The first damascene material may include Aluminium Oxide (Al2O3). The second damascene material may include Silicon Dioxide (SiO2). Side gap regions may include SiO2.
摘要翻译：提供了一种用于制造具有非保形侧面间隙的PMR写入器主极的工艺。该方法可以包括在衬底上沉积包括磁性材料和第二染料层材料的缝合层，在第一镶嵌材料中形成空气轴承表面（ABS）区域，以及在第二镶嵌材料中形成轭铁区域。第一镶嵌材料可以包括氧化铝（Al 2 O 3）。第二镶嵌材料可以包括二氧化硅（SiO 2）。侧隙区域可以包括SiO 2。

55. 发明申请

US20160133290A1 WRITE POLE CONFIGURATION 有权
标题翻译：写入配置
公开(公告)号：US20160133290A1
公开(公告)日：2016-05-12
申请号：US14867573
申请日：2015-09-28
申请人： Seagate Technology LLC
发明人： Jiaoming Qiu , Lei Lu , Xuelian Xu
IPC分类号： G11B5/60 , G11B5/127
CPC分类号： G11B5/6082 , G11B5/1272 , G11B5/1278 , G11B5/147 , G11B5/17 , G11B5/3116 , G11B5/3123
摘要： A write head having a write pole with a tip portion defining a pole tip and a paddle portion extending from the tip portion away from the pole tip, the paddle portion defining a back edge. The write head also has a coil structure having at least two active turns crossing the paddle portion, wherein a back of the coil structure is no more than 1 micrometer past the back edge of the write pole. In some implementations, a length from the pole tip to the back edge is no more than 4.5 micrometers.
摘要翻译：一种具有写入极的写入头，其具有限定极尖的尖端部分和从所述尖端部分远离所述极尖端延伸的桨状部分，所述桨形部分限定了后缘。写头还具有线圈结构，该线圈结构具有至少两个与该桨叶部分相交的活动匝，其中线圈结构的背面经过写入极的后边缘不超过1微米。在一些实施方案中，从极尖到后缘的长度不超过4.5微米。

56. 发明申请

US20160071535A1 METHODS OF MANUFACTURING MAGNETIC HEADS USING A TRIGGER READER ELECTRONIC LAPPING GUIDE 审中-公开
公开(公告)号：US20160071535A1
公开(公告)日：2016-03-10
申请号：US14942179
申请日：2015-11-16
申请人： Seagate Technology LLC
发明人： Jeffrey R. O'Konski , Garrick F. Shurts , Greg A. Schmitz , Gregory P. Shaffer
IPC分类号： G11B5/48 , G11B5/187 , G11B5/60 , G11B5/147
CPC分类号： G11B5/4826 , B24B37/013 , B24B37/048 , B24B49/10 , G11B5/147 , G11B5/187 , G11B5/3166 , G11B5/3169 , G11B5/3173 , G11B5/6082
摘要： A method of manufacturing a magnetic read-write head, including the steps of presenting a row bar to a processing location, the row bar including an air bearing surface, at least one read-write head, at least one electronic lapping guide, and at least one trigger device, wherein each electronic lapping guide is positioned at a different distance from the air bearing surface than each trigger device, and wherein the read-write head and at least one of the trigger devices include a multi-layer stack of materials; lapping the air bearing surface while measuring the electrical resistance of at least one electronic lapping guide and at least one trigger device until the resistance measurement of the trigger device provides an open circuit reading, and measuring an offset resistance value of the at least one electronic lapping guide concurrently with the measurement of the open circuit reading by the trigger device.

57. 发明申请

US20160035375A1 Data Storage Device with Phase Lock Spin-Torque Oscillation Stabilization 有权
公开(公告)号：US20160035375A1
公开(公告)日：2016-02-04
申请号：US14879906
申请日：2015-10-09
申请人： Seagate Technology LLC
发明人： Kaizhong Gao
IPC分类号： G11B5/35 , G11B5/60 , G11B5/012
CPC分类号： G11B5/35 , G11B5/012 , G11B5/11 , G11B5/1278 , G11B5/147 , G11B5/235 , G11B5/3116 , G11B5/314 , G11B5/3146 , G11B5/6082 , G11B2005/0024
摘要： A data storage device can be configured at least with a first spin-torque oscillator disposed between and contacting a write pole and a shield on an air bearing surface. A second spin-torque oscillator can be disposed between and contact the write pole and shield with the second spin-torque oscillator separated from the air bearing surface by a first stabilization distance and from the first spin-torque oscillator by a second stabilization distance. The first and second spin-torque oscillators can be configured to magnetostatically couple and phase lock to produce a single microwave frequency in response to a bias field.

58. 发明授权

US09230571B1 MgO based perpendicular spin polarizer in microwave assisted magnetic recording (MAMR) applications 有权
标题翻译：基于MgO的垂直自旋偏振器在微波辅助磁记录（MAMR）应用中
公开(公告)号：US09230571B1
公开(公告)日：2016-01-05
申请号：US14468399
申请日：2014-08-26
申请人： Headway Technologies, Inc.
发明人： Wenyu Chen , Yan Wu
IPC分类号： G11B5/127 , G11B5/31 , G11B5/39 , G11B5/00
CPC分类号： G11B5/315 , G11B5/1278 , G11B5/147 , G11B5/314 , G11B5/3146 , G11B5/3909 , G11B2005/0024
摘要： A design for a microwave assisted magnetic recording device is disclosed wherein a spin torque oscillator (STO) between a main pole and write shield has a spin polarization (SP) layer less than 30 Angstroms thick and perpendicular magnetic anisotropy (PMA) induced by an interface with one or two metal oxide layers. Back scattered spin polarized current from an oscillation layer is used to stabilize SP layer magnetization. One or both of the metal oxide layers may be replaced by a confining current pathway (CCP) structure. In one embodiment, the SP layer is omitted and spin polarized current is generated by a main pole/metal oxide interface. A direct current or pulsed current bias is applied across the STO. Rf current may also be injected into the STO to reduce critical current density. A write gap of 25 nm or less is achieved while maintaining good STO performance.
摘要翻译：公开了一种用于微波辅助磁记录装置的设计，其中在主极和写屏蔽之间的自旋极化振荡器（STO）具有小于30埃的自旋极化（SP）层和由界面引起的垂直磁各向异性（PMA）具有一个或两个金属氧化物层。使用来自振荡层的背散射自旋极化电流来稳定SP层的磁化强度。金属氧化物层中的一个或两个可以被限制电流通路（CCP）结构代替。在一个实施例中，SP层被省略，并且通过主极/金属氧化物界面产生自旋极化电流。在STO上施加直流或脉冲电流偏置。也可以将Rf电流注入STO以降低临界电流密度。在保持良好的STO性能的同时实现25nm或更小的写入间隙。

59. 发明申请

US20150380017A1 PARTIAL MAIN POLE LAMINATION FOR POLE ERASURE IMPROVEMENT 审中-公开
公开(公告)号：US20150380017A1
公开(公告)日：2015-12-31
申请号：US14846512
申请日：2015-09-04
申请人： HGST Netherlands B.V.
发明人： Venkatesh CHEMBROLU , Wen-Chien David HSIAO , Alexander M. ZELTSER
IPC分类号： G11B5/147
CPC分类号： G11B5/147 , G11B5/1278 , G11B5/1475 , G11B5/3116 , G11B5/3143 , G11B5/315 , G11B5/3163
摘要： The embodiments of the present invention relate to a magnetic write head and a method for forming the magnetic write head. The magnetic write head includes a partially laminated main pole that has a magnetic layer that is recessed from a media facing surface, a nonmagnetic spacer layer disposed on and adjacent to the magnetic layer and a laminated stack disposed on at least a portion of the nonmagnetic layer. The nonmagnetic spacer layer has a first end at the media facing surface and a second end at a distance from the media facing surface and the laminated stack has a first end at the media facing surface and as second end at a distance from the media facing surface.

60. 发明申请

US20140078620A1 MICROWAVE-ASSISTED MAGNETIC RECORDING HEAD, METHOD OF MANUFACTURING THE SAME, MAGNETIC HEAD ASSEMBLY USING THE SAME, AND MAGNETIC RECORDING/REPRODUCTION APPARATUS 有权
标题翻译：微波辅助磁记录头，其制造方法，使用其的磁头组件和磁记录/再现装置
公开(公告)号：US20140078620A1
公开(公告)日：2014-03-20
申请号：US13752812
申请日：2013-01-29
申请人： KABUSHIKI KAISHA TOSHIBA , TDK CORPORATION
发明人： Satoshi SHIROTORI , Katsuhiko KOUI , Shinobu SUGIMURA , Norihito FUJITA , Akihiko TAKEO , Min LI , Ruhang DING
IPC分类号： G11B5/147
CPC分类号： G11B5/147 , G11B5/1278 , G11B5/314 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head manufacturing method includes forming a spin torque oscillator layer on a main magnetic pole layer, forming a mask on the spin torque oscillator layer, processing the spin torque oscillator layer by performing ion beam etching through the mask, and partially modifying the main magnetic pole layer through the mask. The partially modifying the main magnetic pole layer makes it possible to decrease the saturation flux density of the main magnetic pole layer in the modified portion, and form an unmodified main magnetic pole portion covered with the mask, and a modified portion around the main magnetic pole.
摘要翻译：根据一个实施例，磁记录头制造方法包括在主磁极层上形成自旋转矩振荡器层，在自旋扭矩振荡器层上形成掩模，通过通过掩模进行离子束蚀刻来处理旋转扭矩振荡器层，并通过掩模部分地改变主磁极层。通过部分地改变主磁极层，可以降低修正部分中的主磁极层的饱和磁通密度，并且形成被掩模覆盖的未修改的主磁极部分，以及主磁极周围的改质部分。

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