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公开(公告)号：US20170092300A1
公开(公告)日：2017-03-30
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：US11913130B1
公开(公告)日：2024-02-27
申请号：US17830695
申请日：2022-06-02
Applicant: Seagate Technology LLC
Inventor： Jie Gong , Steven C. Riemer , John A. Rice , Hilton Erskine , Michael C. Kautzky , Xuelian Xu
Abstract: A data storage device comprising a recording head having a high damping magnetic alloy layer including at least one magnetic alloy element, and a 5d transition element; the high damping magnetic alloy layer having a mixed face-centered cubic (fcc) and body-centered cubic (bcc) crystal structure, and the mixed fcc and bcc crystal structure comprising fcc and bcc grains, with the bcc grains having an elongated shape relative to the fcc grains, a larger size than the fcc grains, and slip deformation, thereby providing the high damping magnetic alloy layer with a damping constant of up to about 0.07.
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Patent Agency Ranking
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：US09171557B1
公开(公告)日：2015-10-27
申请号：US14535481
申请日：2014-11-07
Applicant: Seagate Technology LLC
Inventor： Jiaoming Qiu , Lei Lu , Xuelian Xu
IPC: G11B5/147
CPC classification number: G11B5/6082 , G11B5/1272 , G11B5/1278 , G11B5/147 , G11B5/17 , G11B5/3116 , G11B5/3123
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US11377749B1
公开(公告)日：2022-07-05
申请号：US16705991
申请日：2019-12-06
Applicant: Seagate Technology LLC
Inventor： Jie Gong , Steven C. Riemer , John A. Rice , Hilton Erskine , Michael C. Kautzky , Xuelian Xu
Abstract: A method includes immersing a wafer in an electrolyte including a plurality of compounds having elements of a high damping magnetic alloy with very low impurity and small uniform grain size. The method also includes applying a pulsed current with a certain range of duty cycle and pulse length to the wafer when the wafer is immersed in an electrolyte. The wafer is removed from the electrolyte when a layer of the high damping magnetic alloy is formed on the wafer.
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公开(公告)号：US09384769B2
公开(公告)日：2016-07-05
申请号：US14867573
申请日：2015-09-28
Applicant: Seagate Technology LLC
Inventor： Jiaoming Qiu , Lei Lu , Xuelian Xu
CPC classification number: G11B5/6082 , G11B5/1272 , G11B5/1278 , G11B5/147 , G11B5/17 , G11B5/3116 , G11B5/3123
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US20160133290A1
公开(公告)日：2016-05-12
申请号：US14867573
申请日：2015-09-28
Applicant: Seagate Technology LLC
Inventor： Jiaoming Qiu , Lei Lu , Xuelian Xu
CPC classification number: G11B5/6082 , G11B5/1272 , G11B5/1278 , G11B5/147 , G11B5/17 , G11B5/3116 , G11B5/3123
Abstract: 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.
Abstract translation: 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。
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