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    • 7. 发明授权
    • Device for detecting a magnetic field
    • 用于检测磁场的装置
    • US6075361A
    • 2000-06-13
    • US977983
    • 1997-11-25
    • Reinder CoehoornJacques C. S. Kools
    • Reinder CoehoornJacques C. S. Kools
    • G01R33/09G11B5/39G01R33/02H01L43/08
    • G11C11/16B82Y25/00G01R33/093G11B5/397
    • The device comprises a Wheatstone bridge with at least four magnetoresistive elements (1a, 1b, 1c, 1d) on a substrate (15), each magnetoresistive element comprising at least one sensitive portion (13) comprising successively a first ferromagnetic layer (19) having a magnetic easy axis (27) extending in a first direction, a non-magnetic layer (21) and a second ferromagnetic layer (23) having a magnetic easy axis (29) extending in a second direction that is different from the first direction. The sensitive portions (13) have mutually parallel sensitive directions that are parallel to a third direction (X). Each magnetoresistive element (1a, 1b, 1c, 1d) is associated with a current conductor (35a, 35b, 35c, 35d) provided in the immediate vicinity of that magnetoresistive element. The first direction (27) is canted through an acute angle with respect to the third direction (X), and the second direction (29) is canted in the opposite sense through an acute angle with respect to the third direction. Each one of the current conductors (35a, 35b, 35c, 35d) extends over at least a portion of its length in a fourth direction (Y) perpendicular to the third direction (X).
    • 该装置包括在基板(15)上具有至少四个磁阻元件(1a,1b,1c,1d)的惠斯通电桥,每个磁阻元件包括至少一个敏感部分(13),其连续地包括第一铁磁层(19) 沿第一方向延伸的易磁化轴(27),具有沿与第一方向不同的第二方向延伸的易磁化轴(29)的非磁性层(21)和第二铁磁层(23)。 敏感部分(13)具有平行于第三方向(X)的相互平行的敏感方向。 每个磁阻元件(1a,1b,1c,1d)与设置在该磁阻元件紧邻处的电流导体(35a,35b,35c,35d)相关联。 第一方向(27)相对于第三方向(X)倾斜成锐角,并且第二方向(29)以相对于第三方向的锐角以相反的方向倾斜。 电流导体(35a,35b,35c,35d)中的每一个在垂直于第三方向(X)的第四方向(Y)上在其长度的至少一部分上延伸。
    • 10. 发明申请
    • Storage system using superparamagnetic particles
    • 使用超顺磁性颗粒的储存系统
    • US20060028748A1
    • 2006-02-09
    • US10532914
    • 2003-10-08
    • Reinder Coehoorn
    • Reinder Coehoorn
    • G11B27/36
    • G11B5/855G11B5/84
    • An information carrier (10) has an information plane that has a pattern of superparamagnetic material constituting an array of storage locations (11). The presence of a specific superparamagnetic material (12R, 12G, 12B, 12Y) at the information plane represents a value of a storage location. The superparamagnetic materials have a specific response to a varying magnetic field, e.g. a known decay time. A storage unit has an interface surface (32) for cooperating with the information plane, and has coils (27) for generating the varying magnetic field. The interface surface has an array of magnetic sensor elements (24,25,26) each having a sensitive area for generating a read signal. A processing unit (33) detects said presence via the specific response by processing the read signal.
    • 信息载体(10)具有信息平面,该信息平面具有构成存储位置(11)阵列的超顺磁性材料的图案。 在信息平面处存在特定的超顺磁性材料(12R,12G,12B,12Y)表示存储位置的值。 超顺磁材料对变化的磁场具有特定的响应,例如 一个已知的衰变时间。 存储单元具有用于与信息平面配合的接口表面(32),并具有用于产生变化磁场的线圈(27)。 接口表面具有磁传感器元件阵列(24,25,26),每个磁传感器元件具有用于产生读信号的敏感区域。 处理单元(33)通过处理读取信号通过特定响应检测所述存在。