Magnetic Properties of Co-P and Co-P-Cr Thin Films for Longitudinal Magnetic Recording

抄録

In order to develope new magnetic media with higher coercivity, we have investigated the magnetic properties of Co-P/Cr and Co-P-Cr/Cr films. The coercivity of Co-P binary films deposited at RT was around 835 Oe in the range of 9 - 12 at.% P. In the Co-P binary system coercivity decreased with increasing substrate temperature for P contents of 9 -12 at.%. However, the coercivity of the films containing more than 12 at.%. P is very low due to the formation of amorphous phase. The coercivity of Co-P-Cr ternary films increased with increasing Cr contents and reached the maximum value of 1020 Oe in the water cooled CO_<84>P_<10>Cr_6 film.