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公开(公告)号：US20240233754A9
公开(公告)日：2024-07-11
申请号：US18359982
申请日：2023-07-27
CPC分类号： G11B5/11 , G11B5/1272 , G11B5/374 , G11B5/3912
摘要： According to one embodiment, a magnetic sensor includes first to sixth shields, first and second magnetic layers, a first member, and first to fourth terminals. The first magnetic layer is provided between the first shield and the second shield. The first magnetic layer is between the third shield and the fourth shield in the second direction. The second magnetic layer is provided between the first magnetic layer and the second shield. The second magnetic layer is between the fifth shield and the sixth shield in the second direction. The second magnetic layer is electrically connected to the fifth shield and the sixth shield. The first member includes a first region and a second region. The first region is provided between the third shield and the first magnetic layer. The second region is provided between the first magnetic layer and the fourth shield.
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公开(公告)号：US10037770B1
公开(公告)日：2018-07-31
申请号：US14939934
申请日：2015-11-12
发明人： Krishna Bahadur Chetry , Ming Sun , Jinqiu Zhang
CPC分类号： G11B5/1272 , G11B5/1278 , G11B5/17 , G11B5/3116 , G11B5/3163 , Y10T29/49021 , Y10T29/49032 , Y10T29/4906
摘要： A method provides a magnetic write apparatus. The method includes providing a pole including a pole tip, a yoke, a pole bottom and a pole top. The pole is seam free and formed vertically in a direction from the pole bottom toward the pole top. At least one coil for energizing the pole is also provided. In some aspects, providing the pole may include removing a portion of an intermediate layer to form a trench therein. The trench has a shape and location corresponding to the pole, a bottom, a top and sides. A conductive layer is deposited in the trench and on a top surface of the intermediate layer. Insulating layer(s) are provided on the sides of the trench. Only part of the conductive layer on the trench bottom is exposed. Pole material(s) are grown on the exposed portion of the conductive layer to provide the pole.
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公开(公告)号：US09972345B1
公开(公告)日：2018-05-15
申请号：US14974743
申请日：2015-12-18
发明人： Wei Tian , Hauqing Yin , Lei Lu , Yong Luo , Joseph Mundenar
CPC分类号： G11B5/1272 , G11B5/112 , G11B5/1278
摘要： A method includes depositing a layer of pole material on a substrate. The layer of pole material has a bottom surface that is adjacent to the substrate and a top surface that is opposite the bottom surface. A masking material is deposited over a portion of the top surface. Material from the pole material unprotected by the masking material is removed to form a write pole having first and second side walls. At least a portion of a trench formed by removal of the material from the layer of pole material is filled with a sacrificial material. The mask and a portion of the write pole at the top surface are removed to form a beveled trailing edge surface. The sacrificial material is then removed. Front shield gap material is deposited over the beveled trailing edge surface and over portions of the side walls.
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公开(公告)号：US09940950B2
公开(公告)日：2018-04-10
申请号：US15145205
申请日：2016-05-03
发明人： Wanxue Zeng , Weimin Si , Ying Hong , Lieping Zhong
CPC分类号： G11B5/1272 , G11B5/1278 , G11B5/187 , G11B5/3116 , G11B5/3163
摘要： Various embodiments described herein provide for substrate structures including uniform plating seed layers, and that provide favorable adhesion on dielectric substrate layers. According to some embodiments, a methods for forming a magnetic recording pole is provided comprising: forming an insulator layer; forming a trench in the insulator layer; forming an amorphous seed layer over the insulator layer; forming an adhesion layer over the amorphous seed layer, the adhesion layer comprising a physical vapor deposited (PVD) noble metal; forming a plating seed layer over the adhesion layer, the plating seed layer comprising chemical vapor deposited (CVD) Ru; and forming a magnetic material layer over the plating seed layer.
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公开(公告)号：US20180082714A1
公开(公告)日：2018-03-22
申请号：US15813374
申请日：2017-11-15
发明人： Kurt Wiesen , Javier Guzman , Joseph Mundenar , Michael Conover
CPC分类号： G11B5/1272 , G11B5/012 , G11B5/1278 , G11B5/1335 , G11B5/265 , G11B5/3116 , G11B5/3163 , G11B5/4886 , G11B5/50 , G11B7/00 , G11B20/10388 , G11B27/36
摘要： A method of forming a recording head for use with a data storage medium in a data storage device. The method includes forming first and second writers of different target geometries. A first recording measurement is performed on one or more storage media using the first writer. A second recording measurement is performed on the one or more storage media using the second writer. Based on a comparison of the first and second recording measurements to a predetermined quantity, either the first writer or the second writer is selected to be operational in the data storage device.
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公开(公告)号：US20180025744A1
公开(公告)日：2018-01-25
申请号：US15653788
申请日：2017-07-19
发明人： Ryuji FUJII , Shi Xiong CHEN , Long Ping WANG , Zeng Hui ZHANG
CPC分类号： G11B5/3103 , G11B5/10 , G11B5/1272 , G11B5/3163 , G11B5/3169 , G11B5/3173
摘要： A row bar for forming magnetic heads includes a row of magnetic head forming portions each having a magnetic head and a cutting portion adjacent to the magnetic heads. A row of bonding pads and a first ELG pad are provided at the magnetic head, a second ELG pad is provided at the cutting portion, both of the first and the second ELG pads are adapted for contacting with a probe during lapping process, and a conductive structure that is higher than surfaces of the first and the second ELG pads is formed at peripheries of the first and the second ELG pads respectively. Due to the conductive structures, a probe used in lapping process will be prevented from shifting from the ELG pads to ensure a stable contact, thereby obtaining efficient and accurate resistance measurement.
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公开(公告)号：US09870791B1
公开(公告)日：2018-01-16
申请号：US15489180
申请日：2017-04-17
发明人： Victor Sapozhnikov , Steven P. Bozeman , Mohammed Shariat Ullah Patwari , LiWen Tan , Jae Young Yi , Eric W. Singleton
CPC分类号： G11B5/3958 , G11B5/112 , G11B5/1272 , G11B5/3912
摘要： A multi-sensor reader that includes a first sensor that has a first sensor stack, which includes a sensing layer that has a magnetization that changes according to an external magnetic field. The first sensor also includes a first seed layer below the first sensor stack. The multi-sensor reader also includes a second sensor stacked over the first sensor. The second sensor includes a second sensor stack, which includes a sensing layer that has a magnetization that changes according to the external magnetic field. The second sensor also includes a second seed layer below the second sensor stack. A stabilization element is included to maintain a magnetization direction of the second seed layer and to stabilize the second seed layer.
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8.发明申请公开(公告)号：US20170372731A1
公开(公告)日：2017-12-28
申请号：US15676688
申请日：2017-08-14
发明人： Robert G. Biskeborn , Calvin S. Lo , Teya Topuria
IPC分类号： G11B5/39 , H01L43/02 , G11B15/46 , G11B5/127 , C23C14/02 , G11B5/008 , C23C14/34 , C23C14/08 , H01L43/08 , G11B5/41
CPC分类号： G11B5/3909 , C23C14/021 , C23C14/022 , C23C14/081 , C23C14/34 , G11B5/00813 , G11B5/00826 , G11B5/1272 , G11B5/3163 , G11B5/41 , G11B15/46 , G11B2005/3996 , H01L43/02 , H01L43/08
摘要： In one general embodiment, a method includes forming a first magnetic layer, forming a tunnel barrier layer above the first magnetic layer, and forming a second magnetic layer above the tunnel barrier layer. The tunnel barrier layer includes crystalline alumina. The tunnel barrier layer is formed at a temperature of less than 100 degrees centigrade.
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9.发明申请公开(公告)号：US20170365281A1
公开(公告)日：2017-12-21
申请号：US15670207
申请日：2017-08-07
发明人： Sarbeswar Sahoo , Tong Zhao , Michael C. Kautzky
CPC分类号： G11B5/314 , G11B5/1272 , G11B5/3163 , G11B5/4866 , G11B5/6088 , G11B7/1387 , G11B13/08 , G11B2005/0021
摘要： A method including depositing a plasmonic material at a temperature of at least 150° C.; and forming at least a peg of a near field transducer (NFT) from the deposited plasmonic material.
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10.发明申请公开(公告)号：US20170365278A1
公开(公告)日：2017-12-21
申请号：US15667721
申请日：2017-08-03
发明人： Masao HORIGUCHI , Ruining Gao
CPC分类号： G11B5/17 , G06K7/082 , G06K7/083 , G06K7/084 , G11B5/00808 , G11B5/1272 , G11B5/1475 , H01F7/20 , H01F41/005 , H01F2007/062
摘要： A method for manufacturing a magnetic core module in a magnetic head, the magnetic core module and the magnetic head. The method for manufacturing the magnetic core module includes: a process for placing a magnetic core group in a holder mold cavity as an insert; and a process for injection-molding in the holder mold cavity. A method for manufacturing the magnetic core module allows the magnetic core group and the holder to be integrally injection-molded with a method of injection molding which uses the magnetic core group as an insert. The method simplifies the process of manufacturing a magnetic head to improve production efficiency, and saves labor and production costs. Further, the method prevents failures such as positional displacement and scattering of magnetic cores, which tends to occur when assembling thin and small magnetic cores, and ensures an ideal yield for a product.
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