公开(公告)号：US08681539B2

公开(公告)日：2014-03-25

申请号：US13862611

申请日：2013-04-15

Applicant: Seagate Technology LLC

Inventor： Yuankai Zheng ,  Dimitar V. Dimitrov ,  Dexin Wang ,  Haiwen Xi ,  Kaizhong Gao ,  Olle Heinonen ,  Wenzhong Zhu

IPC: G11C11/00

CPC classification number: G11C11/1675 ,  B82Y10/00 ,  B82Y25/00 ,  G11C11/16 ,  G11C11/161 ,  H01F10/3254 ,  H01F10/3268 ,  H01F10/3286 ,  H01F10/329 ,  H01L43/08

Abstract: Spin-transfer torque memory includes a composite free magnetic element, a reference magnetic element having a magnetization orientation that is pinned in a reference direction, and an electrically insulating and non-magnetic tunneling barrier layer separating the composite free magnetic element from the magnetic reference element. The free magnetic element includes a hard magnetic layer exchanged coupled to a soft magnetic layer. The composite free magnetic element has a magnetization orientation that can change direction due to spin-torque transfer when a write current passes through the spin-transfer torque memory unit.

Abstract translation: 自旋转矩存储器包括复合自由磁性元件，具有沿参考方向固定的磁化取向的参考磁性元件以及将复合自由磁性元件与磁性参考元件分离的电绝缘和非磁性隧道势垒层 。 自由磁性元件包括与软磁性层交换的硬磁性层。 复合自由磁性元件具有当写入电流通过自旋转移转矩存储单元时由于自旋转矩传递而改变方向的磁化取向。

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：US20130314816A1

公开(公告)日：2013-11-28

申请号：US13955843

申请日：2013-07-31

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Olle Heinonen ,  Yonghua Chen

IPC: G11B21/10

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。