TY - JOUR
T1 - Effect of Tartronic Acid on Magnetic Properties of Electroless Plated Co-Ni-Re-P Alloy Films for a Perpendicular Recording Medium
AU - Koiwa, I.
AU - Okabe, Y.
AU - Matsubara, H.
AU - Osaka, T.
AU - Goto, F.
PY - 1985/7
Y1 - 1985/7
N2 - Electroless plated Co-Ni-Re-P alloy films for use as perpendicular magnetic recording media were studied. It was found that the addition of tartronic acid to the plating bath makes it possible to form Co-Ni-Re-P perpendicular anisotropic films with no MnSO4 present. Co-Ni-Re-P alloy films, with a composition simpler than that of previously developed Co-Ni-Re-Mn-P films, has a greater potential than do the latter for practical use as perpendicular recording media. The read/write characteristics of 8-inch disks employing Co-Ni-Re-P films were also measured, in combination with a ring head. Characteristics almost equal to those of media containing Mn were obtained, and even higher recording densities are expected, given improved matching of head and disk properties. A recording density of D50 = 54 kFRPI was obtained for a 0.2 micron thick medium, using a 0.33 micron gap ring head and with a 0.12 micron head-medium spacing.
AB - Electroless plated Co-Ni-Re-P alloy films for use as perpendicular magnetic recording media were studied. It was found that the addition of tartronic acid to the plating bath makes it possible to form Co-Ni-Re-P perpendicular anisotropic films with no MnSO4 present. Co-Ni-Re-P alloy films, with a composition simpler than that of previously developed Co-Ni-Re-Mn-P films, has a greater potential than do the latter for practical use as perpendicular recording media. The read/write characteristics of 8-inch disks employing Co-Ni-Re-P films were also measured, in combination with a ring head. Characteristics almost equal to those of media containing Mn were obtained, and even higher recording densities are expected, given improved matching of head and disk properties. A recording density of D50 = 54 kFRPI was obtained for a 0.2 micron thick medium, using a 0.33 micron gap ring head and with a 0.12 micron head-medium spacing.
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U2 - 10.1109/TJMJ.1985.4548819
DO - 10.1109/TJMJ.1985.4548819
M3 - Article
AN - SCOPUS:0022095712
SN - 0882-4959
VL - 1
SP - 443
EP - 449
JO - IEEE Translation Journal on Magnetics in Japan
JF - IEEE Translation Journal on Magnetics in Japan
IS - 4
ER -