公开(公告)号：US08724265B2

公开(公告)日：2014-05-13

申请号：US13743607

申请日：2013-01-17

Applicant: Seagate Technology LLC

Inventor： Jiaoming Qiu ,  Kaizhong Gao ,  Yonghua Chen ,  Beverley Craig ,  Zhongyan Wang ,  Vladyslav A. Vas'ko

IPC: G11B5/33 ,  G11B5/127

CPC classification number: G11B5/127 ,  G11B5/39 ,  G11B5/3932

Abstract: A magnetoresistive sensor is generally disclosed. Various embodiments of a sensor can have at least a trilayer sensor stack biased with a back biasing magnet adjacent a back of the trilayer sensor. The back biasing magnet, the trilayer sensor stack, or both have substantially trapezoidal shapes to enhance the biasing field and to minimize noise.

Abstract translation: 通常公开了一种磁阻传感器。 传感器的各种实施例可以具有至少三层传感器堆叠，该三层传感器堆叠与靠近三层传感器背面的背偏置磁体偏置。 背偏置磁体，三层传感器堆叠或两者具有基本上梯形的形状以增强偏置场并且使噪声最小化。

公开(公告)号：US08724252B2

公开(公告)日：2014-05-13

申请号：US13955843

申请日：2013-07-31

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Olle Heinonen ,  Yonghua Chen

IPC: G11B21/02

CPC classification number: G11B21/106 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3948 ,  G11B5/4886 ,  G11B5/596 ,  G11B5/746

Abstract: In order to improve a consistent data track during writing to a storage medium, a plurality of read sensors are affixed to a transducer head. In one implementation, the transducer head includes multiple read sensors placed up-track of the write pole. In another implementation, the transducer head includes at least one read sensor placed up-track of the write pole and at least one read sensor placed down-track of the write pole. Each position of the multiple read sensors relative to the write pole may be unique. One or more read signals of selected read sensors are used to determine the read location and therefore the write pole location relative to the storage medium.

Abstract translation: 为了在写入存储介质期间改善一致的数据轨迹，多个读取传感器固定在换能器头上。 在一个实施方案中，换能器头部包括放置在写入极上的多个读取传感器。 在另一个实施方式中，换能器头包括至少一个读取传感器，其被放置在写入磁极的上方，并且至少一个读取传感器被放置在写入磁极的下方。 多个读取传感器相对于写入极的每个位置可以是唯一的。 使用所选择的读取传感器的一个或多个读取信号来确定读取位置并因此确定相对于存储介质的写入极点位置。

公开(公告)号：US11004466B1

公开(公告)日：2021-05-11

申请号：US16800775

申请日：2020-02-25

Applicant: Seagate Technology LLC

Inventor： Victor Sapozhnikov ,  Taras Grigorievich Pokhil ,  Mohammed Shariat Ullah Patwari ,  Yonghua Chen

IPC: G11B5/39 ,  G11B5/31

Abstract: A recording head that includes a reader having a front end at a bearing surface of the recording head and a rear end behind the bearing surface. The reader has a non-rectangular shape with a front-end width that is less than an average width of the reader. A first bias element is positioned proximate to a first side of the reader, and a second bias element is positioned proximate to a second side of the reader. Each of the first and second bias elements has a bias level that is a function of a ratio of the front-end width to the average width of the reader.

公开(公告)号：US20170133043A1

公开(公告)日：2017-05-11

申请号：US14934926

申请日：2015-11-06

Applicant: Seagate Technology LLC

Inventor： JianHua Xue ,  Debin Wang ,  Huaqing Yin ,  John M. Wolf ,  Erik J. Hutchinson ,  Wei Tian ,  Yonghua Chen

IPC: G11B5/17 ,  G11B5/60

CPC classification number: G11B5/17 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3123 ,  G11B5/3163

Abstract: A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. The write pole and yoke may each be disposed between and separated from a write coil that has a single turn and continuously extends to opposite sides of the write pole.

公开(公告)号：US20140376131A1

公开(公告)日：2014-12-25

申请号：US14479850

申请日：2014-09-08

Applicant: Seagate Technology LLC

Inventor： Eric Shane Linville ,  Jianhua Xue ,  Eric Roger Meloche ,  Huaqing Yin ,  Yonghua Chen

IPC: G11B5/11

CPC classification number: G11B5/11 ,  G11B5/127 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: A data writer may be generally configured at least with a write pole that has a pole sidewall and a continuous first taper angle connecting leading and trailing edges. The write pole can be positioned adjacent to a side shield that is configured with first and second shield sidewalls tapered to a shield tip that is the closest point between the write pole and side shield.

公开(公告)号：US20140168818A1

公开(公告)日：2014-06-19

申请号：US13720712

申请日：2012-12-19

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Victor Boris Sapozhnikov ,  Scott Wilson Stokes ,  Jae-Young Yi ,  Mohammed Shariat Ullah Patwari ,  Yonghua Chen

IPC: G11B5/147

CPC classification number: G11B5/3909 ,  G11B5/3932

Abstract: Implementations described and claimed herein provide a read sensor structure having a synthetic anti-ferromagnetic (SAF) structure with a pinning that is canted with respect to an air bearing surface (ABS) of the read sensor. In an implementation of the read sensor, the angle between the pinning direction of a reference layer (RL) and the pinning direction of a free layer (FL) is obtuse.

Abstract translation: 本文描述和要求保护的实施例提供了具有合成反铁磁（SAF）结构的读取传感器结构，其具有相对于读取传感器的空气轴承表面（ABS）倾斜的钉扎。 在读取传感器的实现中，参考层（RL）的钉扎方向与自由层（FL）的钉扎方向之间的角度是钝的。

公开(公告)号：US20130209835A1

公开(公告)日：2013-08-15

申请号：US13836521

申请日：2013-03-15

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Jiaoming Qui ,  Yonghua Chen ,  Ganping Ju ,  Thomas P. Nolan

IPC: G11B5/84 ,  G11B5/64 ,  G11B5/66

CPC classification number: G11B5/85 ,  B32B15/01 ,  B32B15/017 ,  B32B15/018 ,  B32B2307/208 ,  B32B2307/706 ,  B32B2457/00 ,  C21D1/26 ,  C21D8/12 ,  C21D9/0068 ,  C21D2211/004 ,  C21D2281/02 ,  C22C5/04 ,  C22C30/00 ,  C22C38/002 ,  C22F1/14 ,  C23C14/165 ,  C23C14/221 ,  C23C14/28 ,  C23C14/3464 ,  C23C14/35 ,  C23C14/5806 ,  C23C14/5833 ,  C23C14/5873 ,  G11B5/647 ,  G11B5/65 ,  G11B5/653 ,  G11B5/66 ,  G11B5/732 ,  G11B5/84 ,  G11B5/851

Abstract: A method involves depositing a seed layer comprising at least A1 phase FePt. A main layer of A1 phase FePt is deposited over the seed layer. The main layer includes FePt of a different stoichiometry than the seed layer. The seed and main layers are annealed to convert the A1 phase FePt to L10 phase FePt. The annealing involves heating the substrate prior to depositing at least part of the A1 phase FePt of the main or seed layers.

Abstract translation: 一种方法包括沉积包含至少Al相FePt的种子层。 A1相FePt的主层沉积在种子层上。 主层包括与种子层不同的化学计量比的FePt。 将种子和主层退火以将Al相FePt转化为L10相FePt。 退火包括在沉积主层或种子层的Al相FePt的至少一部分之前加热衬底。

公开(公告)号：US20180120387A1

公开(公告)日：2018-05-03

申请号：US15858401

申请日：2017-12-29

Applicant: Seagate Technology LLC

Inventor： Qing He ,  Wonjoon Jung ,  Mark William Covington ,  Mark Thomas Kief ,  Yonghua Chen

IPC: G01R33/00 ,  G01R33/09 ,  G11B5/31 ,  G11B5/23

CPC classification number: G01R33/0052 ,  G01R33/093 ,  G01R33/098 ,  G11B5/23 ,  G11B5/232 ,  G11B5/3133 ,  G11B5/3143 ,  G11B5/3163 ,  Y10T29/49043 ,  Y10T29/49044

Abstract: A magnetic sensor comprising a first shield and a second shield and a sensor stack between the first and the second shield, the sensor stack having a plurality of layers wherein at least one layer is annealed using in-situ rapid thermal annealing. In one implementation of the magnetic sensor a seed layer is annealed using in-situ rapid thermal annealing. Alternatively, one of a barrier layer, an antiferromagnetic (AFM) layer, and a cap layer is annealed using in-situ rapid thermal annealing.

公开(公告)号：US09697852B2

公开(公告)日：2017-07-04

申请号：US14934926

申请日：2015-11-06

Applicant: Seagate Technology LLC

Inventor： JianHua Xue ,  Debin Wang ,  Huaqing Yin ,  John M. Wolf ,  Erik J. Hutchinson ,  Wei Tian ,  Yonghua Chen

IPC: G11B5/127 ,  G11B5/17 ,  G11B5/60

CPC classification number: G11B5/17 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3123 ,  G11B5/3163

Abstract: A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. The write pole and yoke may each be disposed between and separated from a write coil that has a single turn and continuously extends to opposite sides of the write pole.

公开(公告)号：US20160148629A1

公开(公告)日：2016-05-26

申请号：US14685417

申请日：2015-04-13

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Edward Gage ,  Huaqing Yin ,  Yonghua Chen

IPC: G11B5/49 ,  G11B5/31

CPC classification number: G11B5/4984 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/4886

Abstract: A storage device includes a transducer head with multiple write elements having write poles of different sizes. For example, the transducer head may include two write poles of different width configured to write to a same surface of a storage medium. A controller of the storage device is configured to selectively engage one of the multiple write elements to write data to the storage medium.

Abstract translation: 存储装置包括具有多个具有不同大小的写入极的写入元件的换能器头。 例如，换能器头可以包括两个不同宽度的写入极，其被配置为写入存储介质的相同表面。 存储装置的控制器被配置为选择性地接合多个写入元件之一以将数据写入存储介质。