THE THIN-FILM HEAD FOR VCR

We have investigated a thin film head for VCR application whose struct ure has a long depth and a gap surface that is perpendicular to the su bstrate. We made a test device that has a CoZr amorphous thin film cor e. The conductor is a helicoid that is wound three-dimensionally aroun d the core and is fabricated by thin film processes. The thin film hea d obtained larger normalized output voltage by track width and inducta nce than a MIG head between 1 to 10 MHz.