Patent ID: 6574060
Filing Date: 2003-06-03
Classification: C23C,G11B,Y10S,Y10T

Abstract:
A magnetic storage apparatus comprising:a magnetic recording medium; a drive section for driving this medium in a recording direction; a magnetic head assembly including a recorder section and reproduction section; means for letting the magnetic head perform relative movement with respect to the magnetic recording medium, and record/reproduction signal processor means for performing signal inputting to the magnetic head and for effecting reproduction of an output signal from said magnetic head, wherein said magnetic recording medium comprises: a substrate, a first underlayer, including at least one layer, formed on the substrate, a magnetic layer formed above said first underlayer, wherein said first underlayer comprises an amorphous or micro-crystalline material including nickel (Ni) and at least one element selected from the group consisting of niobium (Nb) and tantalum (Ta), and a second underlayer comprising a body-centered cubic lattice structure formed between the first underlayer and the magnetic layer, wherein said magnetic layer is an alloy comprising a hexagonal closest packed lattice structure including cobalt (Co).