公开(公告)号：US5543988A

公开(公告)日：1996-08-06

申请号：US479252

申请日：1995-06-07

Applicant: Michael J. Brady ,  Lia Krusin-Elbaum ,  William T. Masselink ,  Padmanabhan Santhanam ,  Tsuyoshi Tamegai

Inventor： Michael J. Brady ,  Lia Krusin-Elbaum ,  William T. Masselink ,  Padmanabhan Santhanam ,  Tsuyoshi Tamegai

IPC: G01R33/06 ,  G11B5/012 ,  G11B5/37 ,  H01L43/06 ,  H01L29/82

CPC classification number: G11B5/376 ,  G01R33/06 ,  G11B5/012 ,  H01L43/065

Abstract: A magnetic sensor, memory, and magnetic imager has been described for sensing a magnetic field in two directions concurrently incorporating a bar of semiconductor material having a rectangular cross-section, electrodes for introducing current along the length of the semiconductor material, and electrodes positioned on respective corners of the rectangular cross-section at a common distance along the current path whereby the Hall voltage may be detected concurrently in two directions. The memory includes the above magnetic sensor plus a disk having a magnetic layer thereon for storing information, a positioner for moving the disk, a memory control circuit and a signal processor circuit. The magnetic imager includes a plurality of magnetic field sensors positioned in a one or two-dimensional array. The invention overcomes the problem of mapping magnetic fields with high spatial resolution with high magnetic sensitivity in two directions concurrently.

Abstract translation: 已经描述了一种磁传感器，存储器和磁性成像器，用于感测两个方向上的磁场，同时结合具有矩形横截面的半导体材料棒，用于沿半导体材料的长度引入电流的电极和位于 在沿着电流路径的公共距离处的矩形横截面的各个角部，由此可以在两个方向上同时检测霍尔电压。 存储器包括上述磁传感器加上用于存储信息的磁层上的磁盘，用于移动磁盘的定位器，存储器控制电路和信号处理器电路。 磁性成像器包括以一维或二维阵列定位的多个磁场传感器。 本发明克服了在两个方向同时映射具有高磁敏度的高空间分辨率磁场的问题。