摘要:
According to one embodiment, a method of manufacturing a magnetic recording medium includes depositing a magnetic recording layer and a sacrifice layer on a substrate, patterning the sacrifice layer and magnetic recording layer to form protruded magnetic patterns and sacrifice patterns, depositing a nonmagnetic material in recesses between the magnetic patterns and sacrifice patterns and on the sacrifice patterns, and etching back the nonmagnetic material.
摘要:
According to one embodiment, a method of manufacturing a magnetic recording medium includes forming protruded magnetic patterns on a substrate, depositing a nonmagnetic material in recesses between the magnetic patterns and on the magnetic patterns, and etching back the nonmagnetic material using an oxygen-containing etching gas while reforming a surface of the nonmagnetic material.
摘要:
According to one embodiment, a magnetic recording medium includes protruded magnetic patterns formed on a substrate, and a non-magnetic material filled in recesses between the magnetic patterns and made of a multi-element amorphous alloy containing Ni or Cu, and two or more metals selected from the group consisting of Ta, Nb, Ti, Zr, Hf, Cr, Mo and Ag.
摘要:
A magnetic recording media has a substrate and a magnetic recording layer containing ferromagnatic patterns on the substrate, the magnetic recording layer including a data zone to constitute a recording track and a servo zone to constitute a preamble region, an address region and a burst region, in which the address region and the burst region are separated by a part of the recording track.
摘要:
The present invention relates to a magnetic recording media including servo zones having magnetic or nonmagnetic patterns which are utilized as servo signals including burst marks of a burst section adapted to detect off-track deviation, and data zones, in which the burst marks of the burst section in each of the servo zones are formed of an isolated nonmagnetic material surrounded by a magnetic material.
摘要:
A surveying apparatus is provided having a telescope, a digital camera, a display device, a measuring device, and a superimposing device. The telescope collimates the aiming point on a surveying object. The digital camera has an imaging optical system provided independently from the telescopic optical system of the telescope. The display device displays an image captured by the digital camera. The measuring device measures the distance between the telescope and a surveying point to be surveyed. The superimposing device displays a shot mark which roughly indicates the location of the surveying point in the image on the display device.
摘要:
According to one embodiment, there is provided a method for manufacturing a magnetic recording media, including forming a magnetic film on a substrate and coating a resist on the magnetic film, imprinting a stamper on the resist to transfer patterns of recesses and protrusions to the resist, and removing the stamper and then performing ion milling to process the magnetic film with resist residues remained in recesses in the patterned resist to form magnetic patterns.
摘要:
According to one embodiment, there is provided a magnetic disk apparatus having a magnetic disk having magnetic dot lines each including magnetic dots arrayed at equal intervals in a down track direction, and a read/write head which uses a plurality of adjacent magnetic dot lines as one track and sequentially performs read and write on the magnetic dots included in the magnetic dot lines constituting the track, in which the magnetic dots included in each of the magnetic dot lines in each track of the magnetic disk are displaced in the down track direction from the magnetic dots included in the adjacent dot line in the track depending on a possible skew angle between the read/write head and the track so that the magnetic dots are sequentially accessed by the read/write head.
摘要:
A magnetic recording medium includes: a data area where data is to be recorded; and a servo area where position signal for positioning a recording/reproducing head is recorded, the servo area being provided with an address section in which address information is recorded, wherein the address section has a magnetic pattern configured by columns of recording portions, the columns being arranged in a direction that intersects with a direction of recording tracks to be in parallel with one another, and by non-recording portions arranged between the columns.
摘要:
A discrete track media has a nonmagnetic substrate, and a magnetic recording layer provided on the nonmagnetic substrate and having a data region including a recording track and a servo region including a preamble zone, an address zone and a burst zone, the data region and the servo region include patterns of a ferromagnetic layer forming protrusions and a nonmagnetic material filled into recesses between the patterns of the ferromagnetic layer, in which a height of the nonmagnetic material filled into the recesses in the data region is lower than that in the burst zone.