Abstract: A digital magnetic memory cell device for read and/or write operations has a soft-magnetic read and/or write layer system formed of at least one soft-magnetic read and/or write layer, and a hard-magnetic reference layer system. The two systems are separated by a barrier layer. The soft-magnetic read and/or write layer is an amorphous layer with an induced or inducible uniaxial anisotropy.

Abstract: The contactless proximity switch detects one or more predefined spacing distances between a first part and a second part. The two parts are movably disposed relative to one another. A magnetic angle sensor is disposed in or on the first part and a driver magnet with a driving magnetic field is arranged in or on the second part. When the two parts are at the predefined spacing between then the driving magnetic field produces in the angle sensor an effective direction of field lines which differs from the direction of the original state field lines of the angle sensor. The original field direction is imposed on the angle sensor by a biasing magnetic field which originates either from the driver magnet or from a separate biasing magnet.

Abstract: A magnetoresistive sensor may be constructed with material having a perovskite-like crystal structure and an increased magnetoresistive effect. The material is based on the composition (A1).sub.1-x (A2).sub.x MnO.sub.z, with A1 (trivalent) selected from Y, La, or a lanthanide, A2 (bivalent) from an alkaline-earth metal or Pb, and with 0.1.ltoreq.x.ltoreq.0.9 and 2.0.ltoreq.z.ltoreq.3.5. The sensor contains a layer system with at least two layers with different materials, but in each case in the context of the aforesaid composition, which is selected so that the temperature correlation of the electrical resistance is relatively small. The two layers of the layer system can also be united into a single layer structure with a concentration gradient.

Abstract: A method for preparing a structure having enhanced magneto-resistance, and use of the structure, in which it is possible to prepare a structure having enhanced magnetoresistance on the basis of the system of materials Cu--Co, especially for a magnetoresistive sensor. An intermediate of the structure is formed initially from an alloy having Cu mixed crystals supersaturated with Co by means of a rapid-solidification technique and this intermediate is subsequently converted by means of a predefined heat treatment into an end product of the desired structure having precipitations of or including Co in a Cu matrix.

Abstract: Magnetic material of the Sm-Fe-N system exhibits a crystalline hard magnetic phase with a Th.sub.2 Zn.sub.17 crystalline structure wherein N atoms are incorporated in the crystalline lattice. A preliminary product having a dual component Sm.sub.2 Fe.sub.17 phase is produced by mechanical alloying followed by thermal treatment to achieve the desired microstructure. The preliminary product is heated in a nitrous atmosphere, as a result of which, the hard magnetic phase is formed. The preliminary product may also be obtained by a rapid-quenching technique.

Abstract: A shaped body of anisotropic magnetic material based on the Sm-Fe-N system which has a crystalline, hard magnetic phase with a Th.sub.2 Zn.sub.17 crystal structure, wherein N atoms are incorporated in the crystal lattice, is produced by compacting a powder Sm-Fe preliminary product with an Sm-Fe phase having a magnetically isotropic structure, followed by hot-shaping to provide an intermediate product with a Sm-Fe phase having a magnetically anisotropic structure, followed by heat treating the intermediate product in a nitrogen atmosphere to provide a Sm-Fe-N hard magnetic phase.

Abstract: Magnet material of the Sm-Fe-N system having a crystalline, hard magentic phase with a Th.sub.2 Zn.sub.17 crystal structure, wherein N atoms are incorporated into the crystal lattice, is produced. First a preliminary product is formed by sintering a Sm-Fe powder which is oriented in a magnetic field to provide a sintered body having a two-component Sm-Fe phase. The sintered body is heat treated in a nitrogen atmosphere to form the Sm-Fe-N hard magnetic phase. The nitrogen atomosphere may advantageously be reactive nitrogen.

Abstract: With the method, a layer of a superconductor material with a high transition temperature on the basis of a material system containing metallic components and oxygen is to be prepared. To this end, a layer of metal-oxide preliminary product of the components of the system with a structure still having faults with respect to the superconducting metal oxide phase is first applied to a predetermined substrate with an ordered structure and the desired superconducting metal oxide phase is epitaxially formed subsequently, using a heat treatment and while oxygen is being supplied. It should be possible to carry out the heat treatment such that application in semiconductor technology is possible.

Abstract: A superconducting oxide film is prepared by a method of seeding formation and heat treatment which comprises depositing a layer of a metal-oxide precursor on a predetermined substrate, forming a seed of a predetermined superconducting phase only in a locally limited region of the metal-oxide precursor at a boundary surface to the substrate by means of a solid-state reaction triggered by pulsed energy radiation, and then at least partially converting the metal-oxide precursor into the desired superconducting metal-oxide phase by a heat treatment in the oxygen atmosphere at a temperature below 800.degree. C.

Abstract: An anisotropic magnetic material formed from iron, boron and a rare-earth metal is prepared by the rapid solidification of an alloy melt of the desired composition and subsequently treated to generate magnetic anisotropy. The materials attain comparatively higher coercivity field strengths. A preliminary alloy is first prepared with the material components and cobalt is added to the alloy in such an amount that the crystallization temperature of the corresponding amorphous material system is below the Curie temperature of the crystallizing SE.sub.2 (Fe, Co).sub.14 B- phase. An intermediate product with amorphous structure is then developed from the melt of the preliminary alloy using a rapid solidification technique. Thereafter, a crystallization of the intermediate product is performed using a heat treatment at a temperature that is above the crystallization temperature but below the Curie Temperature in the presence of an external d-c magnetic field to generate the magnetic anisotropy.