Abstract: A perpendicular magnetic recording medium is disclosed that includes a substrate, and a recording layer formed on the substrate, the recording layer having a magnetic easy axis substantially perpendicular to the surface of the substrate and including three or more magnetic layers containing a Co alloy having a hcp structure. The two of the magnetic layers included in the recording layer form an anti-ferromagnetic exchange coupling structure. The two magnetic layers are anti-ferromagnetically exchange coupled via a non-magnetic coupling layer situated therebetween. The magnetizations of the two magnetic layers are anti-parallel to each other at a remanent magnetization state.

Abstract: The vertical magnetic recording medium includes a first recording layer 16 having an easy magnetization axis directed vertical to a surface of the substrate 10, a second recording layer 20 formed over the first recording layer 16 and having an easy magnetization axis directed in-plane of the substrate 10 or oblique to the surface of the substrate 10, and a third recording layer 24 formed over the second recording layer 20 and having an easy magnetization axis directed vertical to the surface of the substrate 10, whereby the vertical magnetization recording medium can improve the reproduction output and can prevent the degradation of the signal quality due to the reproduction output decrease.

Abstract: The magnetic recording medium comprises a first recording layer 16, a second recording layer 20 forming ferromagnetic coupling with the first recording layer, and an intermediate layer 18 formed between the first recording layer 16 and the second recording layer 20 and including non-magnetic layers 18a, 18b formed between the first recording layer 16 and the non-magnetic layer 18b and between the non-magnetic layer 18b and the second recording layer 20. Thus, the reproduction output of the vertical magnetic recording medium can be improved. The constitutions of the ferromagnetic layer and the non-magnetic layer of the intermediate layer are suitably controlled, whereby the S/N ratio of the vertical magnetic recording medium can be also improved.

Abstract: The present invention relates to methods for accelerating the differentiation of embryonic stem cells by introducing nucleic acid encoding the Tal1/Scl transcription factor into the cells, and culturing the transduced cells in a differentiation medium.

Abstract: The present invention provides a magneto-optical recording medium including a recording layer, an intermediate layer and a reproducing layer stacked in this order. Information recorded in the recording layer is transferred to the reproducing layer through the intermediate layer so that the information is reproduced. The reproducing layer includes an upper reproducing layer, a coupling layer, and a lower reproducing layer formed in this order on the intermediate layer. Magnetic information in the upper reproducing layer in an area whose temperature is increased to a predetermined temperature is transferred to the lower reproducing layer through the coupling layer.

Abstract: This invention provides a magneto-optical recording medium forming method of laminating, on a substrate, three magnetic films having different compositions via at least a heat radiating layer, forming a dielectric film of a predetermined film thickness on the resulting structure, nitriding the magnetic films in an area where no information is to be recorded, and further laminating a material constituting the dielectric film on the resulting structure.

Abstract: The present invention provides a magneto-optical recording medium including a recording layer, an intermediate layer and a reproducing layer stacked in this order. Information recorded in the recording layer is transferred to the reproducing layer through the intermediate layer so that the information is reproduced. The reproducing layer includes an upper reproducing layer, a coupling layer, and a lower reproducing layer formed in this order on the intermediate layer. Magnetic information in the upper reproducing layer in an area whose temperature is increased to a predetermined temperature is transferred to the lower reproducing layer through the coupling layer.