摘要:
Methods of forming a layer of magnetic material on a substrate, the method including: configuring a substrate in a chamber; controlling the temperature of the substrate at a substrate temperature, the substrate temperature being at or below about 250° C; and introducing one or more precursors into the chamber, the one or more precursors including: cobalt (Co), nickel (Ni), iron (Fe), or combinations thereof, wherein the precursors chemically decompose at the substrate temperature, and wherein a layer of magnetic material is formed on the substrate, the magnetic material including at least a portion of the one or more precursors, and the magnetic material having a magnetic flux density of at least about 1 Tesla (T).
摘要:
An aspect of the present invention relates to glass for a magnetic recording medium substrate, which comprises, denoted as molar percentages, 50 to 75 percent of SiO 2 , 0 to 5 percent of Al 2 O 3 , 0 to 3 percent of Li 2 O, 0 to 5 percent of ZnO, a total of Na 2 O and K 2 O of 3 to 15 percent, a total of MgO, CaO, SrO, and BaO of 14 to 35 percent, a total of ZrO 2 , TiO 2 , La 2 O 3 , Y 2 O 3 , Yb 2 O 3 , Ta 2 O 5 , Nb 2 O 5 , and HfO 2 of 2 to 9 percent, with a molar ratio of {(MgO+CaO)/(MgO+CaO+SrO+BaO)} falling within a range of 0.85 to 1, and a molar ratio of {Al 2 O 3 /(MgO+CaO)} falling within a range of 0 to 0.30.
摘要翻译:本发明的一个方面涉及玻璃的磁记录介质基板,其包含,以摩尔%表示,50%〜75%的SiO 2,0〜5%的Al 2 O 3,0〜的Li 2 O 3% ,0〜5的ZnO,共Na 2 O和K 2的3%到15%的O的百分比,总的MgO,CaO的,SrO和14〜35%的BaO,一个总的ZrO 2,TiO 2为, 的La 2 O 3,Y 2 O 3,的Yb 2 O 3,的Ta 2 O 5,Nb的2 O 5,和2%至9%,HFO 2 {(氧化镁+ CaO)的/氧化镁(MgO + CaO的摩尔比 +的SrO + BaO)的}下降到1的范围内0.85,和Al 2 O的摩尔比{3 /氧化镁(MgO + CaO)的落下}至12:30的范围为0内。
摘要:
There is described a disk processing and manufacturing equipment in which the processing chambers are stacked on top of each other and in which the disks move through the system on disk carriers which are adjustable to take disks of varying sizes. The disks enter the system through a load zone and are then installed into disk carriers. They move in the carriers sequentially through processing chambers at one level and then move to the other level in a lift or elevator. At this other level, the disks again move sequentially through the system on that level and then exit at an unload zone.
摘要:
The various embodiments of the present invention generally relate to the deposition of a seedlayer for a magnetic recording medium used for perpendicular magnetic recording (PMR) applications, where the seedlayer provides for grain size refinement and reduced lattice mis-fit for a subsequently deposited underlayer or granular magnetic layer, and where the seedlayer is deposited using a nickel (Ni) alloy based sputter target. The nickel (Ni) alloy can be binary (NiX; Ni-Y) or ternary (Ni-X-Y). In addition, the binary (Ni-X; Ni-Y) or ternary (Ni-X-Y) nickel (Ni) based alloys can be further alloyed with metal oxides, thus forming seedlayer thin films with a granular microstructure containing metallic grains, surrounded by an oxygen rich grain boundary. The nickel-based alloys (with or without metal oxides) of the various exemplary embodiments can be made by powder metallurgical technique or by melt-casting techniques, with or without thermo-mechanical working.
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:
A hydrogenated product of an aromatic vinyl polymer, wherein the hydrogenation rate of the aromatic rings thereof is at least 97%, a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is at most 2.0, the weight average molecular weight (Mw) is 100,000 to 300,000, and the content of a component having a molecular weight (M) of at most 10,000 is at most 2% by weight based on the total weight of the polymer; a hydrogenated product of an aromatic vinyl polymer, wherein the content of foreign matter having a particle diameter of at least 0.5 mu m in the hydrogenated polymer is at most 3.0 x 10 particles/g; and a substrate for information recording media obtained by molding a resin material containing a hydrogenated product of an aromatic vinyl polymer, wherein the hydrogenation rate of the aromatic rings thereof is at least 97%, a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is at most 2.0, and the weight average molecular weight (Mw) is 100,000 to 300,000, and production process thereof.