Abstract: A magnetic recording medium is constructed to include a substrate, a magnetic layer made of a Co or Co-based alloy, and an underlayer disposed between the substrate and the magnetic layer. The underlayer is made of an ordered intermetallic material of FCC L12 or FCT L10 crystalline structure, so that c-axis of the magnetic layer is aligned in a predetermined direction.

Abstract: A magnetic recording medium includes at least one magnetic layer, a ferromagnetic layer, a nonmagnetic coupling layer provided between the magnetic layer and the ferromagnetic layer, and a coupling intensifying region which intensifies an exchange coupling strength between the magnetic layer and the ferromagnetic layer. The coupling intensifying region is provided at, at least one of a boundary between the ferromagnetic layer and the nonmagnetic coupling layer and a boundary between the nonmagnetic coupling layer and the magnetic layer.

Abstract: A magnetic recording medium is constructed to include a substrate, a magnetic layer made of a Co or Co-based alloy, and an underlayer disposed between the substrate and the magnetic layer. The underlayer is made of an ordered intermetallic material of FCC L12 or FCT L10 crystalline structure.

Abstract: A magnetic recording medium provided with a substrate and a magnetic layer disposed above the substrate, is characterized by the magnetic layer which includes an initial layer located closer to the substrate and a final layer located further away from the substrate than the initial layer. A saturation magnetization MSa of the initial layer, a saturation magnetization MSb of the final layer, and a saturation magnetization MStot of the magnetic layer as a whole satisfies a relationship MSa<MStot<MSb or MSa>MStot>MSb.

Abstract: A magnetic recording medium is provided with at least one exchange layer structure, and a magnetic layer formed on the exchange layer structure. The exchange layer structure includes a ferromagnetic layer, and a non-magnetic coupling layer provided on the ferromagnetic layer and under the magnetic layer. The ferromagnetic layer and the magnetic layer have antiparallel magnetizations.

Abstract: A magnetic recording medium is provided with at least one exchange layer structure, and a magnetic layer formed on the exchange layer structure. The exchange layer structure includes a ferromagnetic layer, and a non-magnetic coupling layer provided on the ferromagnetic layer and under the magnetic layer. The ferromagnetic layer and the magnetic layer have antiparallel magnetizations.

Abstract: A magnetic recording medium includes a non-magnetic substrate having a top surface subjected to a texturing process in one direction, a seed layer provided on the top surface of the substrate and made of Cr or a Cr-based alloy having a (002) crystal face which is approximately parallel to the top surface of the substrate, an underlayer, provided on the seed layer and having a B2 crystal structure, and a magnetic layer provided above the underlayer, and made of a Co-based alloy.

Abstract: A magnetic recording medium is constructed to include a substrate, a magnetic layer made of a Co or Co-based alloy, and an underlayer disposed between the substrate and the magnetic layer. The underlayer is made of an ordered intermetallic material of FCC L12 or FCT L10 crystalline structure, so that c-axis of the magnetic layer is aligned in a predetermined direction.

Abstract: A magnetic recording medium is constructed to include at least one exchange layer structure and a magnetic layer provided on the exchange layer structure. The exchange layer structure includes a ferromagnetic layer and a non-magnetic coupling layer provided on the ferromagnetic layer. At least one of the ferromagnetic layer and the magnetic layer has a granular layer structure in which ferromagnetic crystal grains are uniformly distributed within a non-magnetic base material.

Abstract: A magnetic recording medium includes at least one magnetic layer, a ferromagnetic layer, a nonmagnetic coupling layer provided between the magnetic layer and the ferromagnetic layer, and a coupling intensifying region which intensifies an exchange coupling strength between the magnetic layer and the ferromagnetic layer. The coupling intensifying region is provided at, at least one of a boundary between the ferromagnetic layer and the nonmagnetic coupling layer and a boundary between the nonmagnetic coupling layer and the magnetic layer.

Abstract: A magnetic storage medium includes first and second magnetic layers provided on a support substrate such that the first and second magnetic layers have respective first and second magnetizations in an anti-parallel relationship in a state no substantial writing magnetic field is applied. The first and second magnetizations are changed to a parallel relationship when a writing magnetic field is applied to the magnetic storage medium, and the first and second magnetizations are changed to the anti-parallel relationship as a result of a magnetic reversal caused in the second magnetic layer with diminishing of the writing magnetic field. The reversal is caused as a result of the action of a reversing magnetic field that dominates before the writing magnetic field is diminished and becomes zero.

Abstract: A magnetic recording medium is provided with at least one exchange layer structure, and a magnetic layer formed on the exchange layer structure. The exchange layer structure includes a ferromagnetic layer, and a non-magnetic coupling layer provided on the ferromagnetic layer and under the magnetic layer. The ferromagnetic layer and the magnetic layer have antiparallel magnetizations.

Abstract: A magnetic recording medium is constructed to include a substrate, a magnetic layer made of a Co or Co-based alloy, and an underlayer disposed between the substrate and the magnetic layer. The underlayer is made of an ordered intermetallic material of FCC L12 or FCT L10 crystalline structure, so that c-axis of the magnetic layer is aligned in a predetermined direction.