摘要:
A diffusion sheet includes: a substrate having a first principal surface and a second principal surface; and structures each in a convex shape formed randomly on the first principal surface or the second principal surface of the substrate. The structures have an identical or almost identical height. The structures have an aspect ratio h/r, where r denotes an average radius of the structures and h denotes an average height of the structures, of more than 0.85 and not more than 1.50. The structures have a filling factor of not less than 60% and not more than 80%.
摘要:
A nanoparticle-resin composite material is provided. The material has a transparent characteristic and a refractive index of at least 1.55 in the visible light region. The composite material includes inorganic nanoparticles dispersed in a polymer having a siloxane bond, the inorganic nanoparticles being coated with an organic compound. The organic compound is at least one compound selected from the group consisting of carboxylic acids, phosphinic acid, phosphonic acid, sulfinic acid, sulfonic acid, and thiols, and the selected compound contains an aryl group or an aryloxy group. The polymer is selected from the group consisting of methylphenyl polysiloxane, methylphenyl hydrogen polysiloxane, a mixture methylphenyl polysiloxane and methylphenyl hydrogen polysiloxane, or methylphenyl polysiloxane, methylphenyl hydrogen polysiloxane, and a mixture of methylphenyl polysiloxane and methylphenyl hydrogen polysiloxane. Parts of the side chains and/or terminals of the methylphenyl polysiloxane and the methylphenyl hydrogen polysiloxane are substituted by epoxy groups, carboxyl groups, carbinol groups, methacryl groups, polyether groups, or vinyl groups.
摘要:
A thin film magnetic head, in which: a magnetic gap thereof is disposed slantingly relative to a direction orthogonal to a scanning direction of the head corresponding to an azimuth angle; an upper magnetic core layer is positioned on a leading side preceding a lower magnetic core layer in a scanning direction of the head, a protrusion on the lower magnetic core layer has an inclined side surface inclined at an angle equal to or greater than the azimuth angle at least on one side surface in a direction of a track width thereof, and at least one edge of a side adjacent to the magnetic gap of a protrusion on the upper magnetic core layer is aligned on a line drawn extending from the inclined side surface of the lower magnetic core layer, thereby suppressing occurrence of side erasing in a magnetic recording medium during azimuth recording.
摘要:
A thin film magnetic head for detecting, as a change in electric resistance, a change in signal magnetic field to be applied along the magnetization-hard-axis direction of a metal ferromagnetic thin film (MR element) having unit-axis anisotropy, which comprises a ferromagnetic film, which is sufficiently larger in coercive force than the metal ferromagnetic thin film, the ferromagnetic film being disposed on a superposed portion between a lead conductor portion and the metal ferromagnetic thin film (MR element), the metal ferromagnetic thin film (MR element) being coupled in ferromagnetic exchange (MR element) to the ferromagnetic film which is larger in coercive force. The ferromagnetic film is magnetized in a direction longitudinally of the MR element.
摘要:
A nanoparticle-resin composite material is provided. The material has a transparent characteristic and a refractive index of at least 1.55 in the visible light region. The composite material includes inorganic nanoparticles dispersed in a polymer having a siloxane bond, the inorganic nanoparticles being coated with an organic compound. The organic compound is at least one compound selected from the group consisting of carboxylic acids, phosphinic acid, phosphonic acid, sulfinic acid, sulfonic acid, and thiols, and the selected compound contains an aryl group or an aryloxy group. The polymer is selected from the group consisting of methylphenyl polysiloxane, methylphenyl hydrogen polysiloxane, a mixture methylphenyl polysiloxane and methylphenyl hydrogen polysiloxane, or methylphenyl polysiloxane, methylphenyl hydrogen polysiloxane, and a mixture of methylphenyl polysiloxane and methylphenyl hydrogen polysiloxane. Parts of the side chains and/or terminals of the methylphenyl polysiloxane and the methylphenyl hydrogen polysiloxane are substituted by epoxy groups, carboxyl groups, carbinol groups, methacryl groups, polyether groups, or vinyl groups.
摘要:
A thin film magnetic recording head comprises a substrate, a first magnetic core formed on the substrate, a second magnetic core having the front end face with a magnetic gap with respect to the front end face of the first magnetic core, and a coil for developing magnetic flux between the front end portions of the magnetic cores. A width of the second magnetic core at the front end portion thereof is chosen to be smaller than that of the first magnetic core. The second magnetic core is at a leading position relative to the second magnetic core in a traveling direction on a recording medium. In such configuration, it is possible to reduce side erase due to recording magnetic flux fringing and to achieve high density of magnetic recording while maintaining the conventional fabrication steps for the thin film magnetic recording head, thereby avoiding the problem in the fabrication.
摘要:
A PCB that can transmit a high frequency signal of a GHz band with a low loss includes an insulator and magnetic nanoparticles dispersed in the insulator.
摘要:
A thin film magnetic head, in which: a magnetic gap thereof is disposed slantingly relative to a direction orthogonal to a scanning direction of the head corresponding to an azimuth angle; an upper magnetic core layer is positioned on a leading side preceding a lower magnetic core layer in a scanning direction of the head, a protrusion on the lower magnetic core layer has an inclined side surface inclined at an angle equal to or greater than the azimuth angle at least on one side surface in a direction of a track width thereof, and at least one edge of a side adjacent to the magnetic gap of a protrusion on the upper magnetic core layer is aligned on a line drawn extending from the inclined side surface of the lower magnetic core layer, thereby suppressing occurrence of side erasing in a magnetic recording medium during azimuth recording.
摘要:
A first ferromagnetic layer is made to show a single magnetic domain to prevent any magnetic walls from appearing. A pair of bias layers 4 are made of a hard magnetic material showing a high resistivity are arranged at opposite ends of a TMR thin film 3. As a result, the sense current flowing through the TMR thin film 3 is prevented from diverting to the bias layers 4. Thus, a sufficiently strong bias magnetic field can be applied to the TMR thin film 3. As a result, the free layer 13 of the TMR thin film 3 is made to show a single magnetic domain to prevent any magnetic walls from appearing.
摘要:
A magnetic functional device allowing magnetization switching at a high speed even if the size of a magnetic substance is made finer on the sub-micron order. The magnetic functional device includes an information carrier layer formed by a magnetic substance; and a strain-imparting layer (such as piezoelectric layer) formed below the information layer and operably configured to impart a drive force to change the direction of a magnetization vector lying in a first plane of the information carrier thereby processing binary or more information by magnetization directions of the information carrier layer; wherein the drive force is applied in pulse to the information carrier layer in a direction nearly perpendicular to the first plane in which lies the magnetization vector of the information carrier layer when the magnetization vector is in an initial state before the application of the drive force. An effective field derived from a magnetic anisotropy or exchange interaction is used as the drive force.