Abstract: A magnetic recording medium comprising(a) a flexible substrate of a polymeric material,(b) a first magnetic layer of a ferromagnetic metal deposited on the substrate by an ionized cluster beam deposition method, and(c) a second magnetic layer of a ferromagnetic metal deposited on the first magnetic layer by a high-vacuum ion plating deposition method, and a process for producing a magnetic recording medium which comprisesimparting a kinetic energy in the range of 100 eV to 10 KeV to an ionized cluster composed of ferromagnetic metal atoms in a high vacuum corresponding to a pressure of 8.times.10.sup.-4 to 1.times.10.sup.-10 torr and impinging the resulting ionized cluster beam against a flexible substrate of a polymeric material to deposit a first magnetic layer of the ferromagnetic metal on the substrate, andimparting a kinetic energy in the range of 1 eV to 10 KeV to atom ions of a ferromagnetic metal by an ion plating method in a high vacuum corresponding to a pressure of 8.times.10.sup.-4 to 1.times.10.

Abstract: A magnetic recording medium comprising a non-magnetic substrate such as on polyethylene terephthalate film, and deposited on the surface of the substrate by a ionized cluster beam deposition method, at least one ferromagnetic material selected from the group consisting of cobalt, cobalt-containing alloys, mixtures of cobalt with other elements, and chromium dioxide; and a process for production thereof. The magnetic recording medium is characterized by having superior magnetic properties, especially superior coercive force, residual magnetic flux density and squareness ratio, and high mechanical strength.

Abstract: A magnetic recording medium comprising a non-magnetic substrate such as polyethylene terephthalate film, and deposited on the surface of the substrate by an ionized cluster beam deposition method, at least one ferro-magnetic material selected from the group consisting of cobalt, cobalt-containing alloys, mixtures of cobalt with other elements, and chromium dioxide; and a process for production thereof. The magnetic recording medium is characterized by having superior magnetic properties, especially superior coercive force, residual magnetic flux density and squareness ratio, and high mechanical strength.