M. Takezawa et al., Miniaturization of high-frequency carrier-type thin-film magnetic field sensor using laminated film, IEEE MAGNET, 36(5), 2000, pp. 3664-3666
We examined a laminated high-frequency carrier-type thin-film magnetic fiel
d sensor that consists of CoNbZr soft magnetic films with Nh nonmagnetic co
nductive interlayer. The lamination can change domain structure of the sens
or and obtain high sensitivity. An impedance change of 6 Omega and a gain o
f 43 k Omega /T was achieved when the length of the laminated sensor was 1
mm. The gain is four times larger than that of a monolayer sensor.