Laminated Fe-Ta-N Heads for HD-Digital VTR

Laminated Fe-Ta-N heads for Hi-Vision digital VTRs have been developed. The Fe-Ta-N film is suitable for use as a head core material in combination with high-coercivity media, because of its high saturation magnetization, soft magnetic properties, high Vickers hardness and corrosion resistance. The head showed a smaller pulse width, higher reproduced output and C/N, and superior recording/playback characteristics in the high frequency range above 20 MHz, compared with Sendust heads in the same design. Laminated Fe-Ta-N heads are expected to be suitable for high data transfer rate digital recording, such as Hi-Vision digital VTRs.