公开(公告)号：US09543067B2

公开(公告)日：2017-01-10

申请号：US14135956

申请日：2013-12-20

申请人： Carlos M. Acuna ,  Mohammad A. Faruque ,  Kevin R. Fugate ,  Todd D. Hoffmann ,  Paige M. Holm ,  Peter T. Jones ,  Rigoberto Lopez, Jr. ,  William D. McWhorter

发明人： Carlos M. Acuna ,  Mohammad A. Faruque ,  Kevin R. Fugate ,  Todd D. Hoffmann ,  Paige M. Holm ,  Peter T. Jones ,  Rigoberto Lopez, Jr. ,  William D. McWhorter

IPC分类号： G01R31/315 ,  H01F7/02 ,  G01R1/04

CPC分类号： H01F7/0294 ,  G01R1/0408 ,  G01R31/315

摘要： Methods, systems and apparatus are provided to apply a magnetic pre-conditioning to magnetic tunneling junction (MTJ) sensors and other micro-magnetic devices after fabrication but before testing, trimming or other subsequent processing. The fabricated sensor device is passed through a magnetic field that has a known direction and orientation relative to the device so that the device is placed into a known state prior to final testing and trimming. Various embodiments allow the field to be applied in situ by a permanent magnet or electromagnet as the devices are being processed by a conventional device handler or similar processing system.

摘要翻译： 提供了方法，系统和装置，用于在制造之后但在测试，修整或其它后续处理之前对磁性隧道结（MTJ）传感器和其它微型磁性装置施加磁性预处理。 制造的传感器装置通过具有相对于装置的已知方向和取向的磁场，使得装置在最终测试和修整之前被置于已知状态。 各种实施例允许现场通过永磁体或电磁体在现场施加，因为装置正在由传统的装置处理器或类似的处理系统处理。