公开(公告)号：WO0005712A9

公开(公告)日：2000-05-18

申请号：PCT/US9916571

申请日：1999-07-21

Applicant: SEAGATE TECHNOLOGY ,  MURDOCK EDWARD S

Inventor： MURDOCK EDWARD S

IPC: G01R33/02 ,  G01R33/09 ,  G11B5/33 ,  G11B5/39 ,  G11B5/40 ,  H01F10/26 ,  H01L43/02 ,  H01L43/08

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3136 ,  G11B5/332 ,  G11B5/3903 ,  G11B5/3919 ,  G11B5/40 ,  G11B2005/3996

Abstract: A method and apparatus for dissipating heat generated in a sensor element of a vertical magnetoresistive recording head or flux guide magnetoresistive recording head having a recess formed in the lower and/or upper magnetic shields for enhancing efficiency during reading data from a magnetic medium. Heat is dissipated through a non-magnetic metal filler layer (10, 12) formed in the shield recesses (140) between an upper (2) or lower (6) metal shield and a sensor element (4) comprising a magnetoresistive head structure. The metal filler (10, 12) must be non-magnetic, must avoid an electrical short between the sensor element and the upper (2) or lower (6) magnetic shield, and must be compatible with the adjacent shield in terms of adhesion thereto and the thermal expansion coefficient thereof. An insulator layer (11, 20) comprising an electrical insulator is formed between the sensor element (4) and the metal filler (10, 12) to insure electrical insulation. The metal filler (10, 12) acts as a thermal path from the sensor element (4) to the metal shields (2, 6).

Abstract translation: 一种用于消散在垂直磁阻记录头或磁通量引导磁阻记录头的传感器元件中产生的热量的方法和设备，所述磁阻记录头具有形成在下部和/或上部磁屏蔽中的凹槽，用于在从磁性介质读取数据期间提高效率。 热量通过形成在上部（2）或下部（6）金属屏蔽和包括磁阻头结构的传感器元件（4）之间的屏蔽凹槽（140）中的非磁性金属填充层（10,12）消散。 金属填充物（10,12）必须是非磁性的，必须避免传感器元件与上（2）或下（6）磁屏蔽之间的电短路，并且必须与相邻屏蔽在粘合方面兼容 及其热膨胀系数。 在传感器元件（4）和金属填充物（10,12）之间形成包括电绝缘体的绝缘层（11,20）以确保电绝缘。 金属填充物（10,12）充当从传感器元件（4）到金属屏蔽（2,6）的热路径。

公开(公告)号：WO1999032896A1

公开(公告)日：1999-07-01

申请号：PCT/US1997023978

申请日：1997-12-23

Applicant: SEAGATE TECHNOLOGY, INC. ,  MAO, Sining ,  MURDOCK, Edward, S.

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G01R33/09

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G01R33/093 ,  G11B2005/3996 ,  H01F10/324 ,  H01F10/3268 ,  H01F41/302 ,  H01L43/10

Abstract: A spin valve sensor (10) and a method of sensor include a stack having a first layer of ferromagnetic material (19) and a second layer of ferromagnetic material (25), with the second layer of ferromagnetic material having a thickness of less than about 100 ANGSTROM . The stack also includes a first layer of non-ferromagnetic conducting material (20) positioned between the first and second layers of ferromagnetic material. The stack further includes an NiMn pinning layer (26) positioned adjacent to the second layer of ferromagnetic material (25) such that the pinning layer is in contact with the second layer of ferromagnetic material. The NiMn pinning layer has a thickness of less than about 300 ANGSTROM and provides a pinning field for pinning a magnetization of the second layer of ferromagnetic material in a first direction. A rocking curve width of the stack is preferably less than about 4 degrees.

Abstract translation: 自旋阀传感器（10）和传感器的方法包括具有第一铁磁材料层（19）和第二铁磁材料层（25）的叠层，第二层铁磁材料的厚度小于约 100 ANGSTROM。 堆叠还包括位于铁磁材料的第一和第二层之间的非铁磁性导电材料（20）的第一层。 堆叠还包括邻近铁磁材料（25）的第二层定位的NiMn钉扎层（26），使得钉扎层与第二层铁磁材料接触。 NiMn钉扎层具有小于约300的厚度，并且提供钉扎场，用于在第一方向上固定第二铁磁材料层的磁化。 堆叠的摇摆曲线宽度优选小于约4度。