Abstract: A conductive element for a movable electrical circuit (a conductive element most suitable for an electric circuit that is placed on a movable element in which the shape of the circuit itself changes during circuit operation) which is Al-based and has an average cross sectional area for the crystal grain of 1 micron2 or less. Preferably, this conductive element contains N+O at 550 to 20000 ppm in atomic concentration and also one or more selected from the group consisting of Si at 0.5–5.0% in atomic concentration, Ta at 0.5–5.0%, and Cu at 0.5–5.0%. More preferably, it contains Nd at 0.5–5.0%. This conductive element for a movable circuit is especially suitable for the wiring pattern in a vibrating gyroscope.

Abstract: A conductive element for a movable electrical circuit (a conductive element most suitable for an electric circuit that is placed on a movable element in which the shape of the circuit itself changes during circuit operation) which is Al-based and has an average cross sectional area for the crystal grain of 1 micron2 or less. Preferably, this conductive element contains N+O at 550 to 20000 ppm in atomic concentration and also one or more selected from the group consisting of Si at 0.5-5.0% in atomic concentration, Ta at 0.5-5.0%, and Cu at 0.5-5.0%. More preferably, it contains Nd at 0.5-5.0%. This conductive element for a movable circuit is especially suitable for the wiring pattern in a vibrating gyroscope.

Abstract: A spin-valve magnetic transducing element. In one embodiment, a spin-valve magnetic transducing element is disclosed in which a ferromagnetic tunneling junction film, including first and second ferromagnetic layers and an insulating layer is enclosed between the ferromagnetic layers. A nonmagnetic metal thin film is inserted between the second ferromagnetic layer and the insulating layer, all of which are formed on a substrate.

Abstract: A compound thin film magnetic head in which the upper shield of the readout MR head also serves as the lower magnetic film of the write inductive head. The upper shield has a layered structure including a shield part of soft magnetic material functioning as a shield to magnetically shield the MR head, a lower pole part and transition part of soft magnetic material functioning as a write magnetic pole opposing the upper pole of the inductive head, and a nonmagnetic separation layer to magnetically separate these. Between the lower pole part and the transition part, an additional nonmagnetic separation layer can be provided. The shield part can be configured from multiple magnetic films formed in layers and enclosing a nonmagnetic separation layer.

Abstract: An inductive/MR composite type thin-film magnetic head. In one embodiment, the inductive/MR composite type thin-film magnetic head is equipped with an inductive head used for writing. The inductive head includes an insulating film and a conductive coil that are laminated between upper and lower magnetic films. The inductive/MR composite type thin-film magnetic head also includes a magnetic resistance (MR) head used for read-out. The inductive/MR composite type thin-film magnetic head is characterized by the fact that a distance L between [i] the upper and lower magnetic poles, which face each other across a magnetic gap at the tip ends of the aforementioned upper and lower magnetic films and [ii] the point where the aforementioned upper and lower magnetic films are joined together has the relationship of L<8400/X, with respect to the desired data transmission rate X (Mbit/sec) of the aforementioned thin-film magnetic head. In one embodiment, L is less than or equal to 60 microns.

Abstract: A composite type thin-film magnetic head. In one embodiment, a substrate is used as a base, and an insulating film, a lower shielding magnetic film, a magneto-resistive element, an upper shielding magnetic film, a magnetic gap film, a recording inductive magnetic film and a protective layer are laminated on this base. An inductive head used for recording is formed by the upper shielding magnetic film. A magnetic gap film, a recording inductive magnetic film, and a magneto-resistive head used for playback are formed by the magneto-resistive element. The upper shielding magnetic film and recording inductive magnetic film are formed by an electroplating of permalloy. The upper shielding magnetic film has a lower nickel concentration on the side of the magnetic gap film than on the side of the magneto-resistive element.

Abstract: A magnetic thin film manufacturing method in which an object of treatment is electroplated in a plating bath so that a magnetic thin film is formed on the surface of the object of treatment. The plating bath contains two or more types of ions selected from a set consisting of Fe.sup.2+ ions, Ni.sup.2+ ions and Co.sup.2+ ions, and fine particles of an insulating material are dispersed in the plating bath. In a more particular embodiment of the invention, a magnetic thin film manufacturing method is characterized by the fact that ?a! the aforementioned two or more types of ions selected from a set consisting of Fe.sup.2+ ions, Ni.sup.2+ ions and Co.sup.2+ ions are supplied by means of sulfates and/or chlorides, ?b! the plating bath is an acidic bath, and ?c! the fine particles of an insulating material that are dispersed in the plating bath are colloidal particles of SiO.sub.2 and/or Al.sub.2 O.sub.3.