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公开(公告)号：US09153257B1
公开(公告)日：2015-10-06
申请号：US14796875
申请日：2015-07-10
Applicant: Seagate Technology LLC
Inventor： John M. Wolf , Jianhua Xue , Kevin Heim , Kirill Rivkin , Huaqing Yin
IPC: G11B5/39
CPC classification number: G11B5/39 , G11B5/127 , G11B5/1278 , G11B5/17 , G11B5/3123
Abstract: A write head having reduced dimensions. In one implementation, the write head has a main pole having a leading side and a trailing side, a leading yoke on the leading side of the main pole, and a coil wrapped around the main pole and the leading yoke. The coil on the leading side and the leading yoke having a distance of no greater than 300 nm therebetween, and the coil on the trailing side and the main pole having a distance of no greater than 350 nm therebetween. In an alternate implementation, the write head has a trailing yoke, with the coil on the trailing side and the trailing yoke having a distance of no greater than 350 nm therebetween.
Abstract translation: 具有缩小尺寸的写头。 在一个实施方式中，写入头具有主极，其主前侧和后侧，主极的前导侧的前轭，以及缠绕在主极和前轭上的线圈。 前导侧的线圈和前导轭之间的距离不大于300nm，后侧的线圈和主极之间的距离不大于350nm。 在替代实施例中，写头具有拖尾轭，线圈在后侧，后轭具有不大于350nm的距离。
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公开(公告)号：US09019659B1
公开(公告)日：2015-04-28
申请号：US14052300
申请日：2013-10-11
Applicant: Seagate Technology LLC
Inventor： Huaqing Yin , Wei Tian , Zhe Shen , Kirill Rivkin , Jianhua Xue
CPC classification number: G11B5/1871 , G11B5/1278 , G11B5/3116
Abstract: A magnetic element can have at least a write pole configured with a write pole tip that has a tip surface oriented at a first angle with respect to an air bearing surface (ABS), a first bevel surface extending from the ABS and oriented at a second angle with respect to the ABS, and a second bevel surface extending from the ABS and oriented at a third angle with respect to the ABS. The first, second, and third angles may be configured to be different and non-orthogonal to each other.
Abstract translation: 磁性元件可以具有至少一个写入极，其配置有写入磁极尖端，所述写入磁极尖端具有相对于空气轴承表面（ABS）以第一角度定向的尖端表面，从ABS延伸并且在第二角度定向的第一斜面 相对于ABS的角度以及从ABS延伸并相对于ABS以第三角度定向的第二斜面。 第一，第二和第三角度可以被配置为彼此不同且非正交。
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公开(公告)号：US09905251B2
公开(公告)日：2018-02-27
申请号：US15043801
申请日：2016-02-15
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Michael R. Montemorra , Ralph W. Cross , Todd M. Lammers , Quan Li , Beng Theam Ko , Kirill Rivkin , Mourad Benakli
CPC classification number: G11B5/09 , G11B5/012 , G11B20/10027 , G11B20/1217 , G11B20/1426
Abstract: Method and apparatus for enhancing write current switching efficiencies during data write operations in a data storage device. In some embodiments, write data are described in the form a sequence of symbols of nT length where T is a channel clock rate and n is an integer over a selected range. Bi-directional write currents are applied to a write element to record the sequence of symbols to a storage medium. The write currents are switched between a first rail current and a second rail current for alternating symbols. The write currents are further transitioned to an intermediate current value for at least one channel clock period immediately preceding a next occurrence of a symbol boundary between an adjacent pair of symbols in the sequence.
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公开(公告)号：US09595275B1
公开(公告)日：2017-03-14
申请号：US14976184
申请日：2015-12-21
Applicant: Seagate Technology LLC
Inventor： Yanzhang Liu , Kirill Rivkin , Lei Lu , Huaqing Yin
CPC classification number: G11B5/465
Abstract: A method of removing a magnetic domain from a slider structure, such as a shield of a write head, in a storage assembly having a storage media. The method includes passing the slider structure in close proximity to a region on the storage media having a magnetic field sufficiently large to remove a magnetic domain in the slider structure.
Abstract translation: 一种从具有存储介质的存储组件中的滑动结构（例如写入头的屏蔽）去除磁畴的方法。 该方法包括使滑块结构靠近具有足够大的磁场的存储介质上的区域，以去除滑块结构中的磁畴。
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公开(公告)号：US09520148B1
公开(公告)日：2016-12-13
申请号：US14976286
申请日：2015-12-21
Applicant: Seagate Technology LLC
Inventor： Yanzhang Liu , Kirill Rivkin , Lei Lu , Huaqing Yin
CPC classification number: G11B5/465 , H01F13/006
Abstract: Methods of removing a magnetic domain from a slider structure, such as a shield in a write head, in a data storage assembly. The method comprises passing the slider structure in close proximity to a decaying magnetic field of at least 100 Oe and no more than 1500 Oe originating from within the storage assembly. In some implementations the decaying magnetic field has an oscillating polarity.
Abstract translation: 从数据存储组件中的诸如写入头中的屏蔽的滑块结构去除磁畴的方法。 该方法包括使滑块结构靠近来自存储组件内的至少100Oe且不超过1500ee的衰减磁场。 在一些实现中，衰减磁场具有振荡极性。
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Patent Agency Ranking
公开(公告)号：US20150103439A1
公开(公告)日：2015-04-16
申请号：US14052300
申请日：2013-10-11
Applicant: Seagate Technology LLC
Inventor： Huaqing Yin , Wei Tian , Zhe Shen , Kirill Rivkin , Jianhua Xue
IPC: G11B5/187
CPC classification number: G11B5/1871 , G11B5/1278 , G11B5/3116
Abstract: A magnetic element can have at least a write pole configured with a write pole tip that has a tip surface oriented at a first angle with respect to an air bearing surface (ABS), a first bevel surface extending from the ABS and oriented at a second angle with respect to the ABS, and a second bevel surface extending from the ABS and oriented at a third angle with respect to the ABS. The first, second, and third angles may be configured to be different and non-orthogonal to each other.
Abstract translation: 磁性元件可以具有至少一个写入极，其配置有写入磁极尖端，所述写入磁极尖端具有相对于空气轴承表面（ABS）以第一角度定向的尖端表面，从ABS延伸并且在第二角度定向的第一斜面 相对于ABS的角度以及从ABS延伸并相对于ABS以第三角度定向的第二斜面。 第一，第二和第三角度可以被配置为彼此不同且非正交。
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公开(公告)号：US09922669B2
公开(公告)日：2018-03-20
申请号：US14981470
申请日：2015-12-28
Applicant: Seagate Technology LLC
Inventor： Kirill Rivkin , Ned Tabat , Mourad Benakli , Michael A. Seigler
CPC classification number: G11B5/1272 , G11B5/3116 , G11B5/312 , G11B5/3163 , G11B2005/0021 , Y10T29/49048
Abstract: Implementations disclosed and claimed herein include a method of write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.
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公开(公告)号：US20170236534A1
公开(公告)日：2017-08-17
申请号：US15043801
申请日：2016-02-15
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Michael R. Montemorra , Ralph W. Cross , Todd M. Lammers , Quan Li , Beng Theam Ko , Kirill Rivkin , Mourad Benakli
CPC classification number: G11B5/09 , G11B5/012 , G11B20/10027 , G11B20/1217 , G11B20/1426
Abstract: Method and apparatus for enhancing write current switching efficiencies during data write operations in a data storage device. In some embodiments, write data are described in the form a sequence of symbols of nT length where T is a channel clock rate and n is an integer over a selected range. Bi-directional write currents are applied to a write element to record the sequence of symbols to a storage medium. The write currents are switched between a first rail current and a second rail current for alternating symbols. The write currents are further transitioned to an intermediate current value for at least one channel clock period immediately preceding a next occurrence of a symbol boundary between an adjacent pair of symbols in the sequence.
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公开(公告)号：US09704510B2
公开(公告)日：2017-07-11
申请号：US14863673
申请日：2015-09-24
Applicant: Seagate Technology LLC
Inventor： Lei Lu , Kirill Rivkin , Xuelian Xu , Huaqing Yin
CPC classification number: G11B5/115 , G11B5/11 , G11B5/112 , G11B5/1278 , G11B5/315 , G11B5/3163
Abstract: A data writer can have at least a write pole separated from first and second side shields by a continuous dielectric gap layer. Each side shield may have first and second shield sub-layers configured with different magnetic moments that increase relative to the sub-layer's distance from the write pole. The side shields may wrap around a leading tip of the write pole to form a box shield.
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公开(公告)号：US20160064018A1
公开(公告)日：2016-03-03
申请号：US14798998
申请日：2015-07-14
Applicant: Seagate Technology LLC
Inventor： Jianhua Xue , Jiaoming Qiu , Kirill Rivkin , Huaqing Yin , John Wolf , Yonghua Chen
CPC classification number: G11B5/17 , G11B5/1278 , G11B5/3116 , G11B5/3123 , G11B5/313
Abstract: A write head having a main pole having a pole tip proximate an air bearing surface (ABS), the main pole having a leading side and a trailing side. The write head also includes a yoke having a yoke tip recessed from the ABS, and a helical coil wrapped around the main pole and the yoke. The helical coil has a first turn with its front edge at least substantially aligned with the yoke tip.
Abstract translation: 一种写头，其主极具有靠近空气轴承表面（ABS）的极尖，所述主极具有前侧和后侧。 写头还包括具有从ABS凹陷的轭头的磁轭和缠绕在主极和磁轭上的螺旋线圈。 螺旋线圈具有第一匝，其前缘至少基本上与轭尖对齐。
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