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    • 1. 发明申请
    • MAGNETORESISTIVE SENSOR ELEMENT AND METHOD FOR REDUCING THE ANGULAR ERROR OF A MAGNETORESISTIVE SENSOR ELEMENT
    • 磁阻传感器元件和方法可以减少出错磁阻的角
    • WO2004048986A2
    • 2004-06-10
    • PCT/DE0303339
    • 2003-10-09
    • BOSCH GMBH ROBERTMAY ULRICHFARBER PAULKITTEL HARTMUTSIEGLE HENRIKHERRMANN INGOSCHMOLLNGRUBER PETER
    • MAY ULRICHFARBER PAULKITTEL HARTMUTSIEGLE HENRIKHERRMANN INGOSCHMOLLNGRUBER PETER
    • G01R33/09G01R33/00
    • B82Y25/00G01R33/093
    • The invention relates to a magnetoresistive sensor element (5) comprising a magnetoresistive system of layers (10), which is constructed according to the spin valve principle and operates on the basis of the GMR effect, at least some sections of said system being strip-shaped when viewed from above. Said strip-shaped system of layers (10) comprises a reference layer (35) with a magnetisation direction that remains practically unaffected by the direction of an external magnetic field acting on said system. During operation, the sensor element (5) provides a measuring signal, which, as a function of a measuring angle, fluctuates between the component of the field strength of the external magnetic field, said component lying on the plane of the system of layers (10), and the magnetisation direction, whereby the measuring angle can be determined from said signal. In addition, when the strip-shaped system of layers (10) is viewed from above, the angle formed by the magnetisation direction, in the absence of the external magnetic field, and the longitudinal direction of the strip-shaped system of layers (10) is adjusted in such a way that when the external magnetic field is acting with a defined field strength, selected from a predetermined working interval, the angular error of the system of layers (10) is practically minimal, as a function of said angle and the field strength. The invention also relates to a method for reducing the angular error of a magnetoresistive sensor element (5).
    • 它提出了一种磁阻传感器元件(5),其具有至少部分地带状在平面图中的GMR效应的基础上工作,并构造根据自旋阀原理磁阻层系统(10),其中,所述带状层系统(10)(参考层 35)具有大致由作用在其上的磁化方向有一个外部磁场的方向不受影响。 所述传感器元件(5)是在操作中,随着该层系统位于的平面之间测得的角度的函数而变化的测量信号(10)的外部磁场的磁场强度和,并从其中该测量角度可被确定的磁化方向的分量。 此外,它提供的是,在带状层系统(10)的俯视图中观察时,在不存在外部磁场和带状涂层系统的纵向方向上的磁化方向之间的角度(10)被设定为使得当外部磁场的作用下具有限定 这是从一个预定的工作区间选择的场强,该层系统(10)和场强这个角度的函数的角度误差是至少约最低。 另外,用于减小磁阻传感器元件(5)的角度误差的方法,提出了
    • 6. 发明专利
    • DE10255327A1
    • 2004-06-24
    • DE10255327
    • 2002-11-27
    • BOSCH GMBH ROBERT
    • SCHMOLLNGRUBER PETERHERRMANN INGOSIEGLE HENRIKKITTEL HARTMUTFARBER PAULMAY ULRICH
    • G01R33/09G01B7/30H01L43/08
    • A magnetoresistive sensor element is provided, having a magnetoresistive layer system which, in top view, is at least regionally striated. The sensor element operates on the basis of the GMR effect and is constructed according to the spin valve principle, the striated layer system featuring a reference layer having a direction of magnetization substantially uninfluenced by a direction of an outer magnetic field acting on it. During operation, the sensor element provides a measuring signal which changes as a function of a measurement angle between the component of the field strength of the outer magnetic field lying in the plane of the layer system, and the direction of magnetization, and from which this measurement angle is able to be ascertained. In addition, observed in a top view of the striated layer system, the angle between the direction of magnetization in the absence of the outer magnetic field and the longitudinal direction of the striated layer system is set in such a way that in response to an influence of the outer magnetic field having a defined field strength, which is selected from a predefined work interval, the angle error of the layer system, as a function of this angle and the field strength, is minimal.