摘要 |
A magnetic recording medium comprising a substrate and a ferromagnetic metal layer, wherein the ferromagnetic metal layer includes hydrated amorphous cobalt oxide, a X-ray photoelectron spectra which is characterized in that, in the Co2p spectrum, a ratio of a peak height at 785.9+/-0.3 eV to that at 780.0+/-0.3 eV is 40/100 or less when a background (BG) line is drawn between lower energy side leading edge points of peaks at 780.0+/-0.3 eV (2p3/2) and 795.6+/-0.3 eV (2p1/2) and, in the O1s spectrum, a ratio of a peak height at 529.3+/-0.4 eV to that at 530.8+/-0.4 eV is from 100:110 to 100:50 when a background line is drawn between the lower energy side leading edge point and the higher energy side leading edge point of a complex peak at 530.5+/-2.5 eV from which the peaks at 529.3+/-0.4 eV and 530.8+/-0.4 are derived by peak synthesis, which has good corrosion and wear resistance. |
申请人 |
HITACHI MAXELL, LTD., IBARAKI, OSAKA, JP |
发明人 |
NIIMI, HIDEAKI;ISOE, NOBORU, TORIDE-SHI IBARAKI-KEN, JP;WAKAI, KUNIO, KITASOUMA-GUN IBARAKI-KEN, JP;MIZUMURA, TETSUO, TORIDE-SHI IBARAKI-KEN, JP |