TY - JOUR
T1 - Recording Characteristics of Electroless-plated CoNiReP/NiWP Double Layers
AU - Matsubara, H.
AU - Mitamura, S.
AU - Noda, K.
AU - Osaka, T.
AU - Goto, F.
PY - 1990/3
Y1 - 1990/3
N2 - Electroless-plated CoNiReP/NiWP double layer films were investigated for perpendicular magnetic recording media as flexible disks. The magnetic properties of a CoNiReP recording layer, such as a saturation magnetization (Ms) value and squareness ratio of perpendicular hysteresis loops (SQR (⊥)), were changed by NiWP underlayers. The reproduced output voltage of CoNiReP/NiWP flexible disks at low recording density with a ring-type head increased with Ms values of recording layer and underlayer. Moreover, the D50 value of 112 kFRPI was attained by the highest SQR(⊥) medium of the double layer evaluated with a 0.20μm gap length sendust ring-type head. This may be mainly due to large perpendicular anisotropy of the top region of recording layer which is improved by the underlayer addition.
AB - Electroless-plated CoNiReP/NiWP double layer films were investigated for perpendicular magnetic recording media as flexible disks. The magnetic properties of a CoNiReP recording layer, such as a saturation magnetization (Ms) value and squareness ratio of perpendicular hysteresis loops (SQR (⊥)), were changed by NiWP underlayers. The reproduced output voltage of CoNiReP/NiWP flexible disks at low recording density with a ring-type head increased with Ms values of recording layer and underlayer. Moreover, the D50 value of 112 kFRPI was attained by the highest SQR(⊥) medium of the double layer evaluated with a 0.20μm gap length sendust ring-type head. This may be mainly due to large perpendicular anisotropy of the top region of recording layer which is improved by the underlayer addition.
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U2 - 10.1109/TJMJ.1990.4564264
DO - 10.1109/TJMJ.1990.4564264
M3 - Article
AN - SCOPUS:0025395909
SN - 0882-4959
VL - 5
SP - 276
EP - 281
JO - IEEE translation journal on magnetics in Japan
JF - IEEE translation journal on magnetics in Japan
IS - 3
ER -