摘要:
A ferromagnetic thin film of manganese and aluminum having varied atomic concentrations of manganese and aluminum in the direction perpendicular to the film plane, preferably the Mn atomic concentration being preferably in a range of 45 to 65% by atom, has a spontaneous magnetization equivalent to that of the bulk of manganese-aluminum alloy and also a high magnetic anisotropy.In addition, a magnetic recording medium comprises a substrate and a magnetic film formed on the substrate, the magnetic film being a thin film in a stacked structure of thin layers of manganese and thin layers of aluminum, laid open upon one another alternatingly in the film thickness direction.Finally, a manganese-silicon magnetic multi-layer film comprises thin layers of manganese and thin layers of silicon laid upon one another alternatingly.
摘要:
A ceramic substrate which comprises a ceramic base material having porosity of not more than 5% and surface roughness R.sub.max of not larger than 0.1 .mu.m, and an amorphous aluminum oxide film having thickness of 1 to 50 .mu.m formed on a surface of said ceramic base material, has high reliability and can be easily surface finished with high accuracy and can be used to form a thin film magnetic circuit.
摘要:
This invention relates to a process for the production of a magnetic recording medium, which comprises heating a substrate or subbing layer containing copper as a main component at a temperature of about 100.degree. to 350.degree. C. and, at the same time, vapor depositing in vacuum a ferromagnetic metal containing cobalt as a main component on the substrate or subbing layer to thus form a magnetic recording layer.
摘要:
The disclosure teaches how binary information may be stabilized in magnetic bubble lattice devices. In bubble lattice devices, information storage is determined by the state of the domain wall structure of the bubble. Fabrication means are disclosed for stabilizing two different types of bubbles found in such films.
摘要:
A magnetic structure for the propagation of magnetic bubbles at elevated velocity. A magnetic bubble layer is grown on a [110] face of a substrate, the lattice misfit being between -6.times.10.sup.-3 and -2.times.10.sup.-3, and the magnetic layer having a composition on the basis of europium-iron garnet and a damping parameter .ltoreq.3.times.10.sup.-7 Oe.sup.2 sec/rad.
摘要:
To provide a key monocrystalline magnetoresistance element necessary for accomplishing mass production and cost reduction for applying a monocrystalline giant magnetoresistance element using a Heusler alloy to practical devices. A monocrystalline magnetoresistance element of the present invention includes a silicon substrate 11, a base layer 12 having a B2 structure laminated on the silicon substrate 11, a first non-magnetic layer 13 laminated on the base layer 12 having a B2 structure, and a giant magnetoresistance effect layer 17 having at least one laminate layer including a lower ferromagnetic layer 14, an upper ferromagnetic layer 16, and a second non-magnetic layer 15 disposed between the lower ferromagnetic layer 14 and the upper ferromagnetic layer 16.
摘要:
An anisotropic thin-film rare-earth permanent magnet endowed with high magnetic characteristics by rendering a vapor-phase-grown thin film anisotropic in the layering direction. The atomic laminate units are formed by laminating a monoatomic layer of a rare earth element on a substrate of a non-magnetic material having, a flat smoothness and then by laminating an atomic laminate of a transition metal element having a plurality of monoatomic layers of a transition metal element, so that the atomic laminate units of a characteristic construction are laminated in a plurality of layers. As a result, each atomic laminate of the transition metal element has an easy magnetizable axis in the laminate direction of the monoatomic layers and which are sandwiched between a monoatomic layer of a rare-earth element so that an inverse magnetic domain is suppressed to establish a strong coercive force. Moreover, the content of the transition metal element to the rare-earth metal is raised to improve the residual magnetic flux density drastically.