Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7976966 | Magnetic tape formed of carbon nanotube arrays containing magnetic nanoparticles A magnetic storage medium is formed of magnetic nanoparticles that are encapsulated within carbon nanotubes, which are arranged in a substrate to facilitate the reading and writing of information by a read/write head. The substrate may be flexible or rigid. Informat... | 07/12/2011 |
| 7718282 | Magnetic recording medium with corrosion resistance and manufacturing method A magnetic recording medium with a granular magnetic recording layer excellent in corrosion resistance is provided. In one embodiment, after formation of, on a non-magnetic substrate, an NiTa adhesion layer, a soft magnetic layer, a Ta intermediate layer, an Ru inte... | 05/18/2010 |
| 7687160 | Magnetic storage medium formed of carbon nanotube arrays A magnetic storage medium is formed of magnetic nanoparticles that are encapsulated within carbon nanotubes, which are arranged in a substrate to facilitate the reading and writing of information by a read/write head. The substrate may be flexible or rigid. Informat... | 03/30/2010 |
| 7429427 | Granular magnetic recording media with improved grain segregation and corrosion resistance Disclosed are granular magnetic recording media with improved grain segregation and corrosion resistance, comprising a non-magnetic substrate and at least one granular magnetic recording layer formed over the surface, comprised of at least one ferromagnetic material... | 09/30/2008 |
| 7311983 | Perpendicular magnetic recording medium and a method for manufacturing the same A perpendicular magnetic recording medium has a magnetic recording layer and laminated magnetic layers composed of different materials. In a first magnetic layer of the magnetic recording layer, ferromagnetic grains are surrounded by a nonmagnetic grain boundary reg... | 12/25/2007 |
| 7241519 | Magnetic recording medium with columar magnetic layer Provided is a magnetic recording medium capable of achieving higher density recording. The magnetic recording medium comprises a magnetic layer formed on a non-magnetic base through vacuum oblique evaporation. The magnetic layer includes a plurality of columns in wh... | 07/10/2007 |
| 7241520 | High density magnetic recording medium using FePtC thin film and manufacturing method thereof A high density magnetic recording medium which has coercivity suitable to a magnetic record, fine grains, and a uniform grain size distribution, and which includes a FePtC alloy thin film containing an optimum carbon content, and a method of manufacturing the high d... | 07/10/2007 |
| 7232621 | Method of patterning magnetic products using chemical reaction A method of patterning magnetic material includes forming a ferromagnetic material layer containing one element selected from the group consisting of Fe, Co and Ni on a substrate, selectively masking a surface of the ferromagnetic material layer, and making nonferro... | 06/19/2007 |
| 7211506 | Methods of forming cobalt layers for semiconductor devices The present invention provides methods of forming cobalt layers on a structure comprising forming a preliminary cobalt layer on a semiconductor substrate by introducing an organic metal precursor onto the semiconductor substrate and treating a surface of the prelimi... | 05/01/2007 |
| 7166261 | Method of patterning products using chemical reaction A method of patterning magnetic material includes forming a ferromagnetic material layer containing one element selected from the group consisting of Fe, Co and Ni on a substrate, selectively masking a surface of the ferromagnetic material layer, and making nonferro... | 01/23/2007 |
| 7158346 | Heat assisted magnetic recording film including superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix Heat assisted magnetic recording systems with composite recording films are disclosed. The magnetic recording films include superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix. The matrix provides antiferromagnetic coupling with... | 01/02/2007 |
| 7141317 | Perpendicular magnetic recording medium A perpendicular magnetic recording medium has a substrate, a soft magnetic underlayer formed on the substrate, arrayed soft magnetic dots formed on the soft magnetic underlayer, and a ferromagnetic recording layer formed on the soft magnetic dots and having magnetic... | 11/28/2006 |
| 7141316 | Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus Disclosed is a perpendicular magnetic recording medium in which an undercoating layer having crystal grains and a grain boundary material containing a carbide or boride is formed below a perpendicular magnetic recording layer, and another undercoating layer containi... | 11/28/2006 |
| 7132176 | Perpendicular magnetic recording medium and magnetic recording/reproduction apparatus A perpendicular magnetic recording medium includes a magnetic recording layer stacked on a substrate and having a first perpendicular magnetic recording layer containing cobalt, and a second perpendicular magnetic recording layer mainly containing a crystalline allo... | 11/07/2006 |
| 7056606 | Magnetic recording medium, method manufacture therefor, and apparatus for magnetic reproducing and reproducing recordings A magnetic recording medium comprising: on a non-magnetic substrate, at least a soft magnetic undercoat film comprising a soft magnetic material; an orientation control film for controlling an orientation of a film directly above; a perpendicular magnetic film in wh... | 06/06/2006 |
| 6696172 | Recording medium and method for manufacturing the same A magnetic recording medium has at least a non-magnetic under-layer, a magnetic layer, a protective layer and a liquid lubricant layer sequentially laminated on a non-magnetic substrate. The magnetic layer includes ferromagnetic grains and non-magnetic gr... | 02/24/2004 |
| 6641934 | High density information recording medium, and manufacturing method of the same medium To present an information recording medium for achieving high density information recording, in particular, a high signal output and a high resolution in magnetic recording, for example, an information recording medium sequentially forming a layer made of... | 11/04/2003 |
| 6638647 | Vertical recording medium with thin soft magnetic film A vertical magnetic recording medium includes a soft magnetic film formed on a substrate, and a vertical magnetization film formed on the soft magnetic film. μ.multidot.δbࣙ1000, when μ is a permeability of the soft magnetic film, and δb [nm] is a fi... | 10/28/2003 |
| 6613428 | Magnetic recording medium and magnetic recording and reproducing apparatus wherein the magnetic layer has a fluctuation of field; A or Hf of not less than 30 Oersteds A thin film magnetic recording medium including a magnetic layer having a fluctuation field defined as S/Xirr, where S is magnetic viscosity and Xirr is irreversible susceptibility Xirr. The fluctuation field of the magnet... | 09/02/2003 |
| 6242085 | Magnetic recording medium and method for producing the same An underlying layer is formed of Cr or the like on a glass substrate, and a magnetic layer is formed on the underlying layer by simultaneously sputtering a magnetic substance and a non-magnetic substance that does not form a solid solution with the magnet... | 06/05/2001 |
| 5480694 | Magnetic recording medium A magnetic recording medium comprising alumite made by anodic oxidation of aluminum or an aluminum alloy and comprising fine pores in which a ferromagnetic material is filled, wherein an in-plane remanence is at least 2.5 times greater than a perpendicula... | 01/02/1996 |
| 5266418 | Magnetic recording medium A magnetic recording medium having a magnetic thin film of a composition expressed as (Coa Ptb McI MdII) Ox (where a, b, c, d are atomic percent; and x is weight percent). In this composition, ... | 11/30/1993 |
| 5242728 | Magnetic recording medium A magnetic recording medium includes a primary coat formed on a non-magnetic base and a magnetic film of a CoP alloy formed on the primary coat, wherein the primary coat is a metal simple substance selected from the group of Cr, V and W or an alloy of two... | 09/07/1993 |
| 5173370 | Magnetic recording medium having a magnetic thin film with both paramagnetic phase and ferromagnetic phase iron nitride with paramagnetic phase zeta Fe2 N as its largest component A perpendicular magnetic recording medium comprises a non-magnetic substrate having one main surface and a magnetic film of Fe-N or Fe-Co-N formed on the substrate's main surface. The magnetic film includes not only ferromagnetic phase, but also .zeta.-Fe... | 12/22/1992 |
| 5154983 | Magnetic alloy A magnetic alloy represented by the compositional formula: Fex Ny Mz wherein M represents at least one of the elements B, C, Al, Ga, or Ge, or M is M'z Lv wherein M' has the same definition as the above M and ... | 10/13/1992 |
| 5068158 | Magnetic recording medium and process for preparing the same A magnetic recording medium comprises a non-magnetic substrate and a perpendicular magnetic film of Co-based alloy having a large perpendicular magnetic anisotropy having 0.001 to 5% by atom of nitrogen formed directly or through an underlayer on the non-... | 11/26/1991 |
| 4835068 | Magnetic recording medium A magnetic recording medium comprises a non-magnetic substrate and a magnetic film which is formed on the non-magnetic substrate and the major component of which is iron nitride-oxide.... | 05/30/1989 |
| 4803130 | Reactive sputtering process for recording media A method of mixing ferromagnetic recording media comprising the steps of: (i) coating a non-magnetic substrate material with a magnetic layer comprising Co-Cr by sputtering; (ii) after sufficient thickness built-up, introducing a gas (hydrocarbon, N2 | 02/07/1989 |
| 4801500 | Magnetic recording medium A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a thin ferromagnetic metal film, wherein the thin ferromagnetic metal film contains an iron atom, a nitrogen atom and an oxygen atom within the following a... | 01/31/1989 |
| 4657812 | Recording medium for perpendicular magnetization A magnetic recording medium for perpendicular magnetization includes a base of a nonmagnetic material, and a magnetic layer having perpendicular magnetic anisotropy on at least a face side of the base, the magnetic layer being composed of cobalt as a main... | 04/14/1987 |
| 4587179 | Magnetic recording medium and manufacturing process thereof A magnetic recording member characterized in that a magnetic film formed on a surface of a substrate has a very small amount of hydrogen mixed therein. The manufacturing process therefor is characterized in that hydrogen gas is introduced into the vacuum ... | 05/06/1986 |
| 4517257 | Recording media comprising vertical magnetization layers essentially consisting of quaternary Co--Ni--Zn--P alloys Magnetic recording media suitable for use in vertical magnetization recording systems are described. The media comprise a magnetic layer on at least one side of a substrate. The magnetic layer is made of a specific type of quaternary alloy. The alloy esse... | 05/14/1985 |
| 4464279 | Magnetic recording medium Magnetic recording medium having a non-magnetic support carrying a magnetic layer, the layer comprising a ferromagnetic powder, a binder, and a Nitrogen containing compound, which is able to complex with Iron ions wherein the stability constant of the Nit... | 08/07/1984 |
| 4452857 | Magnetic medium A base member is disposed in a reaction chamber and a raw material gas is introduced thereinto which contains at least a compound gas of a first magnetic material, or the compound gas of the first magnetic material and an oxidizing or nitriding gas, or th... | 06/05/1984 |
| 4271232 | Amorphous magnetic film A magnetic material of amorphous iron-nitride and a method for preparing the same are provided.... | 06/02/1981 |
