Abstract
We tested the application of a magnetic ribbon to create a highly sensitive magnetic sensor. The sensor employs the impedance change in a magnetic ribbon when a radio frequency (rf) current is passed through it and an external magnetic field is applied. To achieve a highly sensitive magnetic sensor, we had to increase the impedance change. We examined a multilayered magnetic ribbon structure and interpreted the results by using an equivalent circuit of the impedances. The impedance change is enhanced by multiplying the number of ribbons in which rf currents flow in the same direction. The maximum variation rate in the impedances that are proportional to sensitivity was obtained with a double-layered structure.
