摘要:
An information processing device includes a generation unit that generates a hierarchy of a group that classifies each piece of data from information about each of a plurality of pieces of data to be recorded, and a control unit that controls recording of the plurality of pieces of data included in a group of the hierarchy at a highest level on a magnetic recording medium in a recording order according to an order from an upper hierarchy to a lower hierarchy, for each group of the hierarchy at the highest level. The magnetic recording medium has a magnetic layer containing a ferromagnetic powder and a binding agent on a non-magnetic support. A difference between spacings S 0.5 and S 13.5 measured under pressures of 0.5 atm and 13.5 atm by an optical interference method after n-hexane cleaning on a surface of the magnetic layer is equal to or less than 3.0 nm.
摘要:
A magnetic storage media which has an endurance (durability) characteristics close to an infinite number of writing times of data and a data retention (holding) characteristics close to permanency, and is ultra-high-speed writable and erasable, and a data recording apparatus and an image recording apparatus which apply this magnetic storage media are provided. A magnetic storage media includes a thin layer magnet and a magnetic field generating unit arranged facing a surface of the magnet, and is capable of creating or eliminating a skyrmion by applying heat energy to another surface of the magnet positioned on the opposite side of the surface of the magnet, and a skyrmion memory includes the magnetic storage media.
摘要:
A method for manufacturing a magnetic recording medium comprises a monomolecular film forming step of forming a monomolecular film on a substrate and a magnetic film forming step of forming a magnetic film for recording magnetic information on the monomolecular film. The monomolecular film is preferably a perylene-based organic monomolecular film.
摘要:
With a magnetic recording medium, servo pits have to be recorded one disk at a time, which is a problem in that it takes more time and is more expensive. In view of this, with the present invention, at least one signal region whose surface roughness is different from that of other than the signal region is formed on the substrate of a magnetic recording medium comprising a recording layer on a substrate, or on an under layer formed on a substrate.
摘要:
Iron oxide powder for an undercoat layer of a coat-type magnetic recording medium having a multilayer structure which comprises cobalt-doped iron oxide particles having an average length of 0.02 to 0.3 µm, an aspect ratio (length to width ratio) of 2 to 13, and a BET specific surface area of 40 to 100 m2/g and containing a cobalt compound in an amount of 0.2 to 10 atom% in terms of cobalt based on total iron.
摘要:
A magnetically-activatable sheet product is provided comprising a pair of laminated outer sheets between which is a magnetic layer comprising magnetically-activatable particles in a binder matrix, the outer sheets having sufficient opacity to mask the appearance of the magnetic layer; at least one of the outer sheets being provided on its outward facing surface with a coating which comprises either microcapsules containing a solution of at least one chromogenic material, or dispersed droplets containing at least one chromogenic material in a pressure-rupturable matrix, or a colour developer composition, or both microcapsules containing at least one chromogenic material and also a colour developer.
摘要:
A vertical magnetic recording medium, wherein an auxiliary magnetic layer (37) is formed over a soft magnetic lined layer (38) spreading on the front surface of a substrate (31), a recording magnetic layer (36) is formed on the auxiliary magnetic layer (37) having a magnetization easy axis in a vertical direction orthogonal to the front surface of the substrate (31), magnetization is intensified on the recording magnetic layer (36) in the vertical direction orthogonal to the front surface of the substrate (31), whereby, by the auxiliary magnetic layer (37), a recording magnetic field can be intensified more in the vertical direction.
摘要:
A non-magnetic orientation controller layer (37) extends on the surface of a magnetic orientation controller layer (36) and includes crystalline grains adjacent each other. A magnetic recording layer (38) extends on the surface of the non-magnetic orientation controller layer (37) and includes crystalline grains growing form the individual crystalline grains in the non-magnetic orientation controller layer (37). A uniform orientation can be established in the crystalline grains in the magnetic recording layer (38) based on the influences from the magnetic and non-magnetic orientation controller layers (36, 37). The crystalline orientation can reliably be controlled in the magnetic recording layer (38) as compared with the case where the non-magnetic orientation controller layer (37) is solely employed to control the crystalline orientation in the magnetic recording layer (38). A reliable establishment of a uniform crystalline orientation can be achieved without an increase in the thickness of the non-magnetic orientation controller layer (37). The perpendicular magnetic recording medium enjoys a higher performance in the property of electromagnetic transduction.