| 摘要 |
A magnetoresistive current limiter, comprising a substrate (1), a magnetoresistive sensor layer (2), a first insulating layer, a coil (4), a second insulating layer, a magnetic shield layer (6), and an input electrode (8) and output electrode (7). The coil (4) is located between the magnetic shield layer (6) and the magnetoresistive sensor layer (2); The first and second insulating layers are isolated from the magnetoresistive sensor layer (2) and the coil (4), and from the coil (4) and the magnetic shield layer (6), respectively; the magnetoresistive sensor layer (2) and the coil (4) are connected in series, and are connected to the input electrode (8) and the output electrode (7). The magnetoresistive sensor layer (2) comprises N rows of array-type magnetic tunnel junction lines; the coil (4) comprises 2*N+M (N>1, M=-1 or 3) conductive lines in series or N+M (N>1, M=0 or 2) conductive lines in parallel; current flows in the same direction into the conductive lines located above or below the tunnel junction lines and produces, at the magnetic tunnel junction lines, a uniform magnetic field. The magnetic tunnel junction of the magnetically sensitive axis is perpendicular to the magnetic tunnel junction lines, and the magnetoresistive sensor layer (2) has the feature of a monotonic or axisymmetric linear rise in resistance to the magnetic field. The magnetoresistive current limiter has the features of rapid response, continuous operation, and ability to increase or decrease current. |
