摘要:
A phase change optical recording medium has on a substrate a recording layer consisting essentially of a Sb base thin film and a reactive thin film. The Sb base thin film is formed by depositing a Sb base material containing at least 95 at % of Sb to a thickness of 70-150 Å. The reactive thin film is formed of a material which forms a phase change recording material when mixed with Sb. The reactive thin film is typically formed of an In—Ag—Te or Ge—Te material. Stable write/read characteristics are accomplished at the first overwriting, initializing operation is eliminated, and rewriting is impossible at the same linear velocity as recording.
摘要:
One object of the invention is to achieve a phase change type optical recording medium having high degree of modulation and recording sensitivity, and another object of the invention is to achieve a phase change type optical recording medium having already stable write/read characteristics at the time of the first overwriting. The optical recording medium comprises a recording layer made up of an optical recording material containing given amounts of In, Ag, Te and Sb. In one Raman spectrum embodiment of the optical recording there are a scattering peak I-1 having a Raman shift in a range of 113 to 117 cm.sup.-1 and a scattering peak I-2 having a Raman shift in a range of 123 to 127 cm.sup.-1, said scattering peak I-2 being larger in half-width than said scattering peak I-1. In another Raman spectrum embodiment, there are a scattering peak II-1 having a Raman shift in a range of 105 to 125 cm.sup.-1 and a scattering peak II-2 having a Raman shift in a range of 140 to 160 cm.sup.-1, said scattering peak II-1 being higher in intensity than said scattering peak II-2.
摘要:
A phase change optical recording medium has on a substrate a recording layer consisting essentially of a Sb base thin film and a reactive thin film. The Sb base thin film is formed by depositing a Sb base material containing at least 95 at % of Sb to a thickness of 70-150 Å. The reactive thin film is formed of a material which forms a phase change recording material when mixed with Sb. The reactive thin film is typically formed of an In—Ag—Te or Ge—Te material. Stable write/read characteristics are accomplished at the first overwriting, initializing operation is eliminated, and rewriting is impossible at the same linear velocity as recording.
摘要:
The invention provides a phase change type optical recording medium enabling an increased jitter concomitant with repeated overwriting to be restrained or substantially eliminated. In the optical recording medium comprising a phase change type recording layer on a substrate, the recording layer has a lower dielectric layer in contact with a lower side thereof and an upper dielectric layer in contact with an upper side thereof, and at least one of the upper and lower dielectric layers contains zinc sulfide, and further includes a metal element A that has a standard free energy for forming a sulfide thereof lower than a standard free energy for forming ZnS at 0 to 1,000.degree. C. The ratio of metal element A to all metal elements in the zinc sulfide-containing dielectric layer is less than 2 at %. Metal element A is typically Ce, Ca, Mg, Sr, Ba, and Na.
摘要:
In a (Ge,Sb)-Te based optical recording medium of phase change type whose rate determining step in production has been initialization of the recording layer, the time required for production is reduced, and stable recording/reproducing properties are realized from the first overwriting operation. A phase-change type optical recording disc of write once read many-type requiring no initialization is also provided. The optical recording medium comprises a transparent substrate and a recording layer on the transparent substrate. The recording layer comprises at least one Te-based thin film and at least one reactive thin film, and the Te-based thin film is in contact with said reactive thin film. The Te-based thin film is formed from a Te-based material containing at least 95 at % of Te, and the reactive thin film is formed from a (Ge,Sb)-based material mainly comprising Ge and/or Sb. The optical change type material is formed by the mixing of the materials constituting the reactive thin film and Te. After forming the recording layer, the recording layer is irradiated with a continuous laser beam to mix the material constituting the Te-based thin film and the material constituting the reactive thin film.
摘要:
An apparatus for producing metal oxide nanofibers includes a jetting unit, a mixing unit, a heating unit, and a cooling unit. The jetting unit jets particles made of a metal. The mixing unit prepares a mixture by mixing the metal particles and a gas containing an oxidizing component that includes oxygen in molecules of the component. The heating unit heats the mixture to raise the temperature of the mixture up to a temperature at which the metal evaporates. The cooling unit cools the product thus-produced in the heating unit.
摘要:
Provided is a film forming apparatus for forming a film on a substrate maintained within a film forming container by supplying a raw material gas to the substrate. The film forming container includes a substrate maintaining unit, a supply mechanism configured to include a supply pipe with supply holes formed thereon to supply a raw material gas to the interior of the film forming container through the supply holes, an exhaust mechanism configured to include an exhaust pipe with exhaust holes formed thereon to exhaust gas from the interior of the film forming container through the exhaust holes, and a controller configured to control the substrate maintaining unit, the supply mechanism, and the exhaust mechanism. The supply holes and the exhaust holes are formed to face each other with the substrate maintained in the substrate maintaining unit interposed therebetween.
摘要:
A low alloy steel ingot contains from 0.15 to 0.30% of C, from 0.03 to 0.2% of Si, from 0.5 to 2.0% of Mn, from 0.1 to 1.3% of Ni, from 1.5 to 3.5% of Cr, from 0.1 to 1.0% of Mo, and more than 0.15 to 0.35% of V, and optionally Ni, with a balance being Fe and unavoidable impurities. Performing quality heat treatment including a quenching step and a tempering step to the low alloy steel ingot to obtain a material, which has a grain size number of from 3 to 7 and is free from pro-eutectoid ferrite in a metallographic structure thereof, and which has a tensile strength of from 760 to 860 MPa and a fracture appearance transition temperature of not higher than 40° C.
摘要:
There are provided a mobile terminal device and a positioning method, in which power saving is enabled. When an environment estimating unit determines that the mobile terminal device is currently located in an indoor environment, an autonomous GPS positioning regulating unit thereof regulates implementation of an autonomous positioning operation by an autonomous GPS positioning unit to enable the suppression of wasteful power consumption caused by the implementation of the autonomous GPS positioning operation that has no possibility of being successful at a current time. In the meanwhile, an assist information acquiring processing unit of an A-GPS positioning unit is made to perform an assist information acquiring process that is a former process of the A-GPS positioning operation. When the location accuracy of outline location information acquired has a good result of a level 3 or higher, the outline location information is provided as a positioning result.
摘要:
The present invention pertains to a mobile terminal having an autonomous navigation function, said mobile terminal comprising: a map application which performs map matching on the current position of the mobile terminal on a route to a destination; a measurement unit which detects the movement of the mobile terminal, and which provides sensor information representing the number of steps and travel direction; a position calculation unit which determines the current position of the mobile terminal; a travel direction correction unit which, when it has been estimated that a user is walking straight by determining whether the amount of change of the user's travel direction is within a prescribed range in a prescribed period, corrects the user's travel direction according to the orientation of the straight parts when the user is walking straight on the route; and a current position correction unit which, on the basis of the corrected travel direction and the starting time and starting point when walking straight, recalculates the current position of the mobile terminal from the starting point, and corrects the current position of the mobile terminal according to the recalculated current position.