摘要:
A magnetic recording-reproducing apparatus is disclosed which comprises a recording inductive magnetic head, a reproducing magnetoresistive magnetic head, a read-write circuit for inputting a signal to the inductive magnetic head and for reproducing the output from the magnetoresistive magnetic head, an interface for inputting/outputting a signal between the read-write circuit and an external apparatus, and a mechanism for moving the inductive magnetic head, the magnetoresistive magnetic head and the magnetic recording medium relative to one another, wherein the information recorded on the recording medium is reproduced with an area recording density of 300 Mb/in.sup.2 or more.
摘要:
In a magnetoresistive magnetic head which has a permalloy film (2, 22) as the magnetoresistive film and also has a shunt film for applying a transverse biasing magnetic field, an Nb film (3, 23) is formed as the shunt film by the electron-beam evaporation method to increase the heat resistance of the magnetoresistive element, thus making it possible to increase the temperature at which the magnetic head is manufactured.
摘要:
The use of a pure zirconium film as a shunt film in a magnetoresistive head having a permalloy film as a magnetoresistive film and a shunt film for application of a transverse biasing magnetic field serves to improve the heat resistance of the magnetoresistive element and allows an increase in the temperature used in the process for producing a magnetic head.
摘要:
In a magnetoresistive sensor having a magnetoresistive effect element which is held between two sheets of high permeability magnetic ferrite with insulating layers interposed between them, a ferromagnetic metal film is provided adherently to the high permeability magnetic ferrite between the ferrite and the insulating layer, a rise in temperature of the magnetoresistive effect element thereby being held down and a reproduced waveform being made sharp, and thus the characteristics of the element being improved with the life thereof prolonged.
摘要:
In a magnetoresistive magnetic head which has a permalloy film as the magnetoresistive film and also has a shunt film for applying a transverse biasing magnetic field, an Nb film having an electrical resistivity of not more than 30 .mu..OMEGA.cm is formed as the shunt film by the electron-beam evaporation method to increase the heat resistance of the magnetoresistive element, thus making it possible to increase the temperature at which the magnetic head is manufactured.
摘要:
A soft-film-bias type magnetoresistive device is disclosed in which a high-permeability magnetic film, an insulating film and a permalloy film are formed on a substrate in this order, and first, second and third electrodes, which are parallel to each other, are provided on the permalloy film, to form a differential type magnetoresistive device. In this magnetoresistive device, a bias magnetic field which is generated and applied to the permalloy film between the first and second electrodes, is opposite in direction to a bias magnetic field which is generated and applied to the permalloy film between the second and third electrodes.
摘要:
A magneto-resistive type read head has a substrate, a magnetic film exhibiting a magneto-resistive effect arranged in the widthwise direction of the track of a magnetic writing disk, and lead electrodes for feeding an electric current to the track width portion of the magnetic film for reading the signals written in the magnetic writing disk. The magneto-resistive film extends over a width wider than the track width portion and a soft magnetic thin film is formed over the magneto-resistive film on either side of the track width portion to absorb the domain wall so that the magneto-resistive film takes the single domain structure.
摘要:
It is intended to provide an exhaust gas treatment system, which allows for VOC removal at lower temperatures and thereby improves the durability of catalysts and suppresses carbon monoxide generation at the final outlet of the system. The present invention provides a treatment system of an exhaust gas containing a nitrogen oxide, carbon monoxide, and a volatile organic compound comprising: an exhaust gas treatment means for removing the nitrogen oxide by reduction with ammonia and partially oxidizing the VOC to CO; and a CO/VOC removal means for oxidizing the CO and partially unreacted VOC, in this order from the upstream flow of the exhaust gas.
摘要:
To provide a long-life refractory capable of maintaining durability under severe conditions. The castable refractory comprises a mixture containing at least one of 2 to 10 mass % of silicon carbide and 3 to 10 mass % of chamotte, as an auxiliary raw material, and a binder material, with the remaining balance being one or more main raw materials selected from corundum, mullite, bauxite, chamotte, talc and silica, and is used in an environment exposed to an alkali component-containing hot gas atmosphere. In an alkali component-containing gas atmosphere at a high temperature (750° C. or more), silicon carbide and/or chamotte are vitrified to a thickness of 1 mm or less in the surface layer of the refractory to prevent the alkali component-containing gas from intruding inside of the refractory.