1176 results about "Magnetic films" patented technology

The present invention relates to compositions for functional films, and more particularly to compositions for functional films such as a heat ray screening film compatible with hydrolic or alcoholic and anti-hydrolic resin binder, a near infrared screening film, a chrominance correcting film, a conductive film, a magnetic film, a ferromagnetic film, a dielectric film, a ferroelectric film, an electrochromic film, an electroluminescence film, an insulating film, a reflecting film, a reflection preventing film, a catalyst film, a photocatalyst film, a light selectively absorbing film, a hard film, and a heat resisting film, films formed therefrom, and a method of forming the compositions and the films.

A contactless power transferring coil unit is provided. The contactless power transferring coil unit includes a flat coil, a magnetic film, and a leaking flux detecting coil. The flat coil is formed by winding a conductive wire into a spiral on a substantially flat plane. The magnetic film is disposed so as to cover one entire flat surface of the flat coil. The leaking flux detecting coil is disposed in a periphery outside an outer edge of the flat coil and the magnetic film and detects leaking magnetic flux from the flat coil.

Disclosed herein are a dot-patterned structure for magnetic recording bits and a magnetic recording medium provided therewith. The former exhibits high functionality and high performance owing to good crystallinity. The dot-patterned structure is composed of a first layer, which is continuous, and a second layer, which is discrete. The magnetic recording medium having a dot-patterned recording layer is formed by the steps of treating an underlying layer by lithography, thereby forming grooves, filling the grooves by epitaxial growth with the same material as the underlying layer, removing the photoresist used for lithography in a solvent, thereby forming pits, and filling the pits by epitaxial growth with a magnetic film as the recording layer.

Digital information is stored in an unpatterned magnetic film, using the inherent, natural properties of the domain walls in ferromagnetic materials to write data on an unpatterned magnetic film. Data is read from the unpatterned magnetic film using magnetic tunneling junctions (MTJs). To achieve sufficient thermal stability, the magnetic fields required to change the orientation of these magnetic regions may be much larger than can be provided by currents passing through wires. This larger magnetic field is achieved by using the domain wall fringing field generated at the boundary between two magnetic domain walls. The magnetic regions are written by using the fringing fields from magnetic domain walls in neighboring magnetic wires. These wires are brought close to the magnetic storage layer where the magnetic storage regions are to be written.

A horizontal magnetic recording medium that has as its magnetic film a granular film with grains of a chemically-ordered FePt or FePtX (or CoPt or CoPtX) alloy in the tetragonal L10 structure uses an etched seed layer beneath the granular film. The granular magnetic film reveals a very high magnetocrystalline anisotropy within the individual grains. The film is produced by sputtering from a single alloy target or cosputtering from several targets. The granular structure and the chemical ordering are controlled by means of sputter parameters, e.g., temperature and deposition rate, and by the use of the etched seed layer that provides a structure for the subsequently sputter-deposited granular magnetic film. The structure of the seed layer is obtained by sputter etching, plasma etching, ion irradiation, or laser irradiation. The magnetic properties, i.e., Hc and areal moment density Mrt, are controlled by the granularity (grain size and grain distribution), the degree of chemical ordering, and the addition of one or more nonmagnetic materials, such as Cr, Ag, Cu, Ta, or B. The resulting granular magnetic film has magnetic properties suitable for application in high-density, horizontal magnetic recording media.

There is disclosed a magnetic recording medium in which a seed layer, under layer, intermediate layer, first magnetic layer, nonmagnetic layer, second magnetic layer, protective layer, and lubricant layer are successively laminated on a glass substrate, the nonmagnetic layer is constituted of an alloy containing Cr and C, and the magnetic layer is constituted of an alloy containing Co and Pt. The under layer includes at least the seed layer for finely dividing the crystal particles of the magnetic layer, the seed layer includes at least two or more layers of nonmagnetic films, and the intermediate layer formed of the material different from that of the nonmagnetic film is interposed between the nonmagnetic films. In measurement of the thermal stability of the magnetic recording medium, a head is used, the head includes a read/write element, and a write track width is twice or more as large as a read track width in the head.

A structure for magnetically shielded transmission lines for use with high speed integrated circuits having an improved signal to noise ratio, and a method for forming the same are disclosed. At least one magnetic shield structure contains electrically induced magnetic fields generated around a number of transmission lines. The shield material is made of alternating layers of magnetic material and insulating material.

Embodiments of the invention provide a perpendicular recording magnetic head capable of reducing leakage magnetic fields from the soft magnetic films on the air bearing surface side and reducing the protrusion of the soft magnetic films in the direction of the air bearing surface side due to thermal deformation of the soft magnetic films. In one embodiment, the write functional section includes a coil conductor, second soft magnetic film pattern and first soft magnetic film pattern that cover the coil conductor from top and bottom and are magnetically coupled to each other, and a main magnetic pole piece determining a track width. The read functional section includes a reading element sandwiched between two magnetic shield films. A pedestal magnetic pole pattern is formed at the frontal end position of the first soft magnetic film pattern.

A spin torque oscillator includes a first magnetic layer, a second magnetic layer and a first nonmagnetic layer. The first magnetic layer includes a magnetic film of a magnetic material with a body-centered cubic (bcc) structure and an oriented {110} plane of the body-centered cubic structure, the oriented {110} plane being oriented substantially parallel to a principal plane of the magnetic film. The first nonmagnetic layer is disposed between the first magnetic layer and the second magnetic layer. In addition, a magnetic moment in the magnetic film precesses around an axis substantially parallel to the principal plane. Furthermore, a magnetic field is applied in a direction substantially perpendicular to the principal plane, and a current is passed perpendicularly to the principal plane.

This invention provides a surface mounting type planar magnetic device comprised of upper ferrite magnetic film, lower ferrite magnetic film and a planar coil interposed therebetween. For applying surface mount technology, an opening is formed in the upper ferrite magnetic film above a coil terminal portion and then, an external electrode conductive with the coil terminal portion through the opening is formed on the upper ferrite magnetic film. Further, this surface mounting type planar magnetic device is of a thin structure and can be mounted on the surface of a printed board. Its power loss is small, its inductance is large, its frequency characteristic is excellent, the disparity of the characteristic is small and its reliability is excellent.

According to one embodiment, a patterned media includes a magnetic film processed into patterns for tracks, servo zones or data zones, and a nonmagnetic filling material filled between patterns of the magnetic film for the tracks, servo zones or data zones and including a base material and a barrier material formed of a metal that does not constitute the base material.

According to this method for producing a magnetic tunnel junction, a film of a dielectric material capable of acting as a tunnel barrier is deposited between two nanocrystalline or amorphous magnetic films. The dielectric material constituting the tunnel barrier consists of an at least partially crystalline perovskite, and said material is deposited by ion beam sputtering in a vacuum chamber.

It is possible to obtain excellent heat stability even though the element is miniaturized and keep stable magnetic domains even though switching is repeated any number of times. A magneto-resistive effect element includes: a magnetization-pinned layer including a magnetic film having a spin moment oriented in a direction perpendicular to a film surface thereof and pinned in the direction; a magnetic recording layer having a spin moment oriented in a direction perpendicular to a film surface thereof; a nonmagnetic layer formed between the magnetization-pinned layer and the magnetic recording layer; and an anti-ferromagnetic film formed on at least side surfaces of the magnetization-pinned layer.

Portions excluding magnetic elements of a laminate film of magnetic films or the like constituting magnetic elements (1) are oxidized/nitrided or oxynitrided to be insulated by a plasma processing using a conductive mask (17), whereby a plurality of magnetic elements are separated. This laminate film comprises a magnetic element region (18) formed with magnetic elements (1) and an insulated region (19) consisting of oxides/nitrides or oxynitrides. Upper wiring such as a bit line (3) is formed later. Since the conductive mask used in forming the insulated region is made part of the upper wiring, the magnetic elements and the upper wiring can be disposed in contact with each other.

A spin MOSFET includes: a semiconductor substrate; a first magnetic film formed on the semiconductor substrate and including a first ferromagnetic layer, a magnetization direction of the first ferromagnetic layer being pinned; a second magnetic film formed on the semiconductor substrate to separate from the first magnetic film and including a magnetization free layer, a first nonmagnetic layer being a tunnel insulator and provided on the magnetization free layer, and a magnetization pinned layer provided on the first nonmagnetic layer, a magnetization direction of the magnetization free layer being changeable and a magnetization direction of the magnetization pinned layer being fixed; a gate insulating film provided at least on the semiconductor substrate between the first magnetic film and the second magnetic film; and a gate electrode formed on the gate insulating film.

An integrated magnetic film enhanced inductor and a method of forming an integrated magnetic film enhanced inductor are disclosed. The integrated magnetic film enhanced inductor includes an inductor metal having a first portion and a second portion, a top metal or bottom metal coupled to the inductor metal, and an isolation film disposed one of in, on, and adjacent to at least one of the first portion and the second portion of the inductor metal. The isolation film includes a magnetic material, such as a magnetic film.

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 which an axis of easy magnetization is oriented mainly perpendicularly with respect to the substrate; and a protection film, wherein the perpendicular magnetic film has a structure in which a large number of magnetic grains are separated by a grain boundary layer, and an average separating distance between the magnetic grains along a straight line which connects centers of gravity of mutually neighboring magnetic grains is 1 nm or greater.

A perpendicular write head includes a main pole comprising high moment magnetic layers laminated with both soft magnetic layers and non-magnetic layers for antiferromagnetic coupling (AFC) between the high moment material layers.

An apparatus for manufacturing a magnetic recording disk includes a magnetic-film deposition chamber in which a magnetic film for a recording layer is deposited on a substrate; a lubricant-layer preparation chamber in which a lubricant layer is prepared on the substrate in vacuum; and a cleaning chamber in which the substrate is cleaned in vacuum after the magnetic-film deposition in the magnetic-film chamber and before the lubricant-layer preparation in the lubricant-layer chamber. The apparatus may further include a transfer system that transfers the substrate from the cleaning chamber to the lubricant-layer preparation chamber without exposing the substrate to the atmosphere.

A structure and method for improving the spatial resolution of a scanning probe microscope (SPM) tip, which has been coated with a layer of chemically-synthesized nanoparticles. The nanoparticles are either single-species or heterogeneous, such that the single-species nanoparticles can be either ferromagnetic, paramagnetic, superparamagnetic, antiferromagnetic, ferrimagnetic, magneto-optic, ferroelectric, piezoelectric, superconducting, semiconducting, magnetically-doped semiconducting, insulating, fluorescent, or chemically catalytic. The layer of nanoparticles is at least two nanoparticles thick, or alternatively, is a single layer of nanoparticles thick, or alternatively, is a single layer of nanoparticles thick and covers only the tip apex portion of the tip, or alternatively, only a single nanoparticle is affixed to the tip apex. Alternatively, the layer of nanoparticles is transformed into an electrically-continuous magnetic film by annealing at a high temperature.

The soft magnetic film takes its hard axis along the direction in which a magnetic field is generated and its easy axis along a direction perpendicular to the direction of the writer magnetic field. The magnetic bias film applies a magnetic bias along the easy axis to the soft magnetic film.