Abstract
Miniaturization of the magnetic head core was sought aiming for wide band recording. To achieve this, core size effect and magnetic permeability effect on reproducing efficiency of the film core head was studied by both computer simulation and experiment. The main results are as follows: Minimum core width can be reduced to around 160μm without apparent decreasing of core efficiency; and core efficiency depends strongly on the permeability of the film core. Finally, the frequency characteristic of the FeAlSi film laminated core head constructed by these concepts was measured. The core loss ratio of 3.8 dB was gained between the frequencies of 2 MHz. and 18 MHz.
