摘要:
An integrated magnetic head including a thin layer structure. The thin layer structure contains, in the edge of the structure constituting the reading and/or writing face of the magnetic head, two pole pieces separated by a gap and aligned longitudinally. The pole pieces are contained in the transverse direction with respect to the structure between parallel planes of the thin layer structure. The magnetic head bas two layers of wear-resistant material which frame the thin layer structure to reinforce the wear resistance of the reading and/or writing face.
摘要:
A process for collectively making integrated magnetic heads with a bearing surface obtained by photolithography. According to the process, on a wafer is deposited a plurality of heads, a mask defining the profile of the bearing surfaces and the wafer is collectively engraved in the vicinity of the pole pieces of the heads. Such a process may find particular application to the making of magnetic heads.
摘要:
A process for producing a vertical magnetic head for reading information from a magnetic media. The head includes a substrate on which is mounted an amagnetic spacer extending perpendicular to the face of the substrate. A first magnetic material is deposited in vapor phase thin film formed on either side of the spacer. A second magnetic material is deposited on the first by electrolytic growth.
摘要:
Process for producing red and/or write heads for magnetic recording.According to the invention, use is made of a monocrystalline substrate (16), which is anisotropically etched in accordance with a crystallographic plane in order to give the gap (48) its precise direction (straight or inclined). The substrate also undergoes thermal oxidation to give the gap a given thickness.Application to heads for video recording.
摘要:
An assembly of two objects integral with each other through at least one linking element provided between both objects, said linking element including at least a first material portion comprising intermetallic compounds of a phase formed with a first brazing metal and a second metal the melting point of which is higher than that of the first brazing metal, said linking element further including at least a second material portion composed of at least a third metal, said second material portion contacting both objects.
摘要:
A magnetically actuatable contactor has first and second magnetic material strips extending longitudinally. Each has a pad with a contact face parallel to the longitudinal direction. The pads face each other when an intersection of the one contact face and a projection in a transversal direction of the other contact face forms an overlap zone having a surface area. A pad is capable of being transversally shifted in response to a magnetic field between closed and opened positions. In closed position and open positions, the faces and respectively in contact and separated. At least one strip forms pairs of facing pads disposed consecutively along the longitudinal direction. A bridge links two consecutive pads. A cross-section of the bridge is reduced relative to a cross-section of the pads and a surface area of a smallest cross-section of the bridge.
摘要:
Magnetic head for use in magnetic recording and including an integrated coil having at least one winding around a non-embedded part of the magnetic circuit. The winding includes a lower sheet of conductors placed in a chamber etched in the substrate and which is integrated into this substrate. The magnetic head is manufactured in a process including forming on a solid substrate a magnetic circuit with a first and second polar part having embedded portions positioned side by side and separated by a nonmagnetic air gap. The magnetic circuit includes at least one non-embedded bridging part no portion of which is embedded in the substrate. A conductor coil is formed around the non-embedded part of the circuit by making a lower sheet of conductors passing underneath the non-embedded bridging part and by embedding the lower sheet in at least one chamber made in the substrate, and by making an upper sheet of conductors astride the non-embedded bridging part of the magnetic circuit.
摘要:
Vertical magnetic head with an integrated coil and its production process wherein the head comprises two pole pieces (30.sub.2, 30.sub.2) and two integrated coils 50.sub.1, 50.sub.2), which are interconnected by a conductor bridge (75). A magnetic or permeability bridge (70) connects the two pole pieces and closes the circuit.
摘要:
The invention relates to a process for producing on a substrate conductor elements which are mutually spaced by a submicron dimension.This process comprises the stages of producing on substrate (1) spacers, whose dimensions and spacing are a function of the dimensions and spacing of the elements (11a) to be produced, anisotropic deposition on the substrate and perpendicular thereto of the material (11a) constituting the spacers and elimination of said spacers.The invention applies to the production of any random elements and particularly to the production of slightly mutually spaced electric conductors.
摘要:
The invention pertains to a contactor actuatable by a magnetic field wherein: first and second strips comprise pads forming several pairs of pads P1i, P2i facing each other, immediately consecutive along the longitudinal direction, and each strip comprises at least one bridge Ptji, each bridge mechanically and directly linking two immediately consecutive pads Pji, Pj,i+1 of a same strip, the cross-section of this bridge Ptji being reduced as compared with the cross-section of the pads Pji et Pj,i+1, and the surface area SPtji of the smallest cross-section of the bridge Ptji verifying the following relationship: 0