摘要:
A color shifting interference structure is provided. The color shifting interference structure comprises: a magnetic layer, a reflector layer, a dielectric layer over the reflector layer, and an absorber layer over the dielectric layer. The interference structure exhibits a color shift such that the interference structure has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing. The interference structure further comprises an insulator layer over the magnetic layer and the reflector layer is disposed over the insulator layer. The insulator layer has a thickness for preventing corrosion of the interference structure.
摘要:
The present invention relates to a device and corresponding method for ultrafast controlling of the magnetization of a magnetic element. A device (100) includes a surface acoustic wave generating means (102), a transport layer (104), which is typically functionally and partially structurally comprised in said SAW generating means (102), and at least one ferromagnetic element (106). A surface acoustic wave is generated and propagates in a transport layer (104) which typically consists of a piezo-electric material. Thus, strain is induced in the transport layer (104) and in the ferromagnetic element (106) in contact with this transport layer (104). Due to magneto elastic coupling this generates an effective magnetic field in the ferromagnetic element (106). If the surface acoustic wave has a frequency substantially close to the ferromagnetic resonance (FMR) frequency VFMR the ferromagnetic element (106) is absorbed well and the magnetisation state of the element can be controlled with this FMR frequency. The device can be used in an RF-magnetic resonator, a sensor and a camera. The corresponding method can be used for ultrafast reading-out and switching of magnetic components and in magnetic logic.
摘要:
A magnetic recording medium in which a thin ferromagnetic film is formed over a strip or sheet of plastic film whose surface is formed with grain-, rumple- or worm-like nodules into which may be dispersed finely divided particles of the diameter ranging from 0.01 to 0.2 µm. In the case of a thin ferromagnetic metal film type recording medium, steep protrusions of the height ranging from 100 to 2,000 A are distributed over the surface at the average density of 10 4 to 106 per m m 2 .
摘要:
A laminated film for a super-high density magnetic recording medium, comprises (A) a layer 5 composed of a thermoplastic resin and (B) a layer 1 of a thermoplastic resin containing fine particles therein. In this laminated film, the outer surface of the layer (A) has a surface roughness of less than 0.005µ as expressed as the Ra value, and the outer surface of the layer (B) has a surface roughness of 0.005 to 0.040µ as expressed as the Ra value. The outer surface of the layer (B) has either (i) a plurality of depressions and a plurality of protrusions, which are formed thereon in a configuration such that at least one protrusion 3 exists within each depression 2 or at least one protrusion exists in the area where two or more depressions are contiguous to each other, or (ii) protrusions on a flat plane and a covering layer (C) composed of a lubricant, which is formed on the surface of the layer (B). This covering layer (C) may be formed on the surface having the above-mentioned depressions 2 and protrusions 3. The covering layer (C) is a continuous film layer or a discontinuous film layer formed of worm-like nodules. When a ferromagnetic metan thin film is formed on the surface of the layer (A) by vacuum evaporation and a protective film layer is formed on this thin film, there is obtained a vacuum-deposited video tape excellent in the running property and electromagnetic transformation performances. In this vacuum-deposited video tape, the transfer of the surface configuration due to the coarseness of the running surface can be prevented.
摘要:
The present invention relates to a device and corresponding method for ultrafast controlling of the magnetization of a magnetic element. A device (100) includes a surface acoustic wave generating means (102), a transport layer (104), which is typically functionally and partially structurally comprised in said SAW generating means (102), and at least one ferromagnetic element (106). A surface acoustic wave is generated and propagates in a transport layer (104) which typically consists of a piezo-electric material. Thus, strain is induced in the transport layer (104) and in the ferromagnetic element (106) in contact with this transport layer (104). Due to magneto elastic coupling this generates an effective magnetic field in the ferromagnetic element (106). If the surface acoustic wave has a frequency substantially close to the ferromagnetic resonance (FMR) frequency ν FMR the ferromagnetic element (106) is absorbed well and the magnetisation state of the element can be controlled with this FMR frequency. The device can be used in an RF-magnetic resonator, a sensor and a camera. The corresponding method can be used for ultrafast reading-out and switching of magnetic components and in magnetic logic.
摘要:
A magnetic element comprising a first thin film and a second thin film having a coercive force that is greater than the coercive force of the first thin film formed on a substrate. The magnetic element exhibits a continuous magnetic reversal under an applied alternating magnetic field having a magnitude that is smaller than the coercive force of the second thin film to cause said first thin film to undergo magnetic reversal. The magnetic element also exhibits a discontinuous sudden magnetic reversal under an applied alternating magnetic field having a magnitude that is greater than the coercive force of the second thin film. The configuration of the magnetic element has little effect on discontinuous magnetization response. Thus the magnetic element exhibits good magnetic characteristics even when formed in a small size.
摘要:
A cobalt-platinum (CoPt) magnetic film is deposited onto a chromium (Cr) or tungsten (W) underlayer on a substrate, or is deposited directly onto the substrate. The deposited film has an appreciable component of its C-axis which is parallel to the [00.2] direction, lying in the plane of the film. The resultant magnetic films exhibit coercivities from 2100-3000 oersteds. The method of the invention comprises sputtering the underlayer onto a substrate maintained approximately at room temperature in an atmosphere of hydrogen and an inert gas such as Ar or Xe.
摘要:
A magnetic structure is provided with an alumina layer (26) formed between a ceramic substrate (22) and a soft magnetic layer (24). The alumina layer (26) has a formative energy of oxide lower than that of the soft magnetic layer (24) to protect diffusion of oxygen to the soft magnetic layer, when the soft magnetic layer is heated to be formed. Further, a bonding glass layer (36) is positioned between the ceramic substrate (30b) and the alumina layer (34), and another ceramic substrate (30a) is formed on the soft magnetic layer (32).
摘要:
The magnetic film (103) for the magnetic disc is required to have an improved squareness ratio in order to achieve the faster access time than before. This requirement is met by providing a middle layer (102) between the disc substrate (101) and the magnetic thin film (103) according to the known technology. In this invention, the improvement in squareness ratio was accomplished by considering the arrangement of the material forming the middle layer (102). Namely, the middle layer (102) is formed by sputtering so that it has the diagonal micro arrangement. The middle layer (102) can be produced from a variety of materials to produce the desired effect.
摘要:
A magnetic recording media comprises a polyester substrate having 1000/mm 2 or more protrusions of polyester oligomer, and a ferromagnetic thin film of 400 A or larger thickness formed on the surface of the polyester substrate; the recording media has substantially no squealing even at 30°C and over 80% relative humidity.
摘要翻译:一种磁记录介质,其特征在于,具有聚酯基板表面具有1000个/ mm 2以上的聚酯低聚物突起和400以上厚度的强磁性薄膜的聚酯基板, 即使在30℃和80%以上的相对湿度下,记录介质也基本上没有尖叫。