We investigated coupled granular/continuous (CGC) perpendicular media consi
sting of a continuous multilayer for high thermal stability and a granular
host layer to reduce noise. The addition of Co/Pt multilayers increased the
nucleation field of the CoCr18Pt12 medium from 0 to -2000 Oe. Moreover, th
e moment decay was reduced from 4.8% to 0.1% per decade. Compared to Co/Pd
multilayer media, the CGC medium had a 10 dB higher signal-to-noise ratio (
SNR). The granular host layer significantly improved the SNR in the high-de
nsity region over 10 kfc/mm. Compared to the CoCr20Pt10 medium, the CGC med
ium had a 3 dB higher SNR in the low-density region. The medium noise for t
he CGC medium increased with the recording density, while the noise for the
CoCr20Pt10 medium remained constant from 10 to 20 kfc/mm. The approach usi
ng CGC medium improves both the SNR and the thermal stability.