Magnetic recording medium having a glass or amorphous carbon substrate, vanadium or molybdenum precoat layer, chromium primer layer and cobalt magnetic layer

摘要

A magnetic recording medium comprising:PPa precoat layer, having a thickness of 30 to 14000 Å, consisting of any of V (vanadium), Mo (molybdenum), NiP (nickel-phosphorus), C (carbon), Zr (zirconium) or Al (aluminum) formed on a non-magnetic, mirror-surface substrate 1, andPPa Cr (chromium) layer as a primer layer 3 and a Co (cobalt) alloy layer as a magnetic layer 4 laminated in order on the precoat layer 2.