3.
    发明专利
    未知

    公开(公告)号:DE102005036073B4

    公开(公告)日:2008-12-18

    申请号:DE102005036073

    申请日:2005-08-01

    Applicant: IBM QIMONDA AG

    Abstract: A method of forming a ferromagnetic liner on conductive lines of magnetic memory devices and a structure thereof. The ferromagnetic liner increases the flux concentration of current run through the conductive lines, reducing the amount of write current needed to switch magnetic memory cells. The conductive lines are formed in a plate-up method, and the ferromagnetic liner is selectively formed on the plated conductive lines. The ferromagnetic liner may also be formed over conductive lines and a top portion of vias in a peripheral region of the workpiece.

    4.
    发明专利
    未知

    公开(公告)号:DE69208348T2

    公开(公告)日:1996-09-19

    申请号:DE69208348

    申请日:1992-12-07

    Applicant: IBM

    Abstract: The present invention describes a high speed, high precision electrochemical micromachining tool, chemical solution and method for the one sided through-mask micropatterning of conducting foils and films supported by insulating material. The tool of the present invention can include either a movable plate means allowing for the movement of the workpiece (20) to and from above the cathode assembly (18), or a movable cathode assembly means allowing for the movement of said cathode assembly to and fro beneath the workpiece. Said cathode assembly also consists of a nozzle assembly from which the electrolytic solution emerges as electrolytic shower and impinges upon the workpiece. Methods to resolve the problems related to the loss of electrical contact during the electrochemical micromachining process are also described.

    MAGNETIC RECORDING HEAD AND METHOD OF FABRICATING SAME

    公开(公告)号:ZA755016B

    公开(公告)日:1977-03-30

    申请号:ZA755016

    申请日:1975-08-04

    Applicant: IBM

    Abstract: A thin film head includes a permeable substrate providing a first shield, which may include a more highly permeable layer on its upper surface for shielding, a layer of permeable material thereon providing a second shield and a first write head leg referred to as the shielding-leg layer and a magnetic gap filled with dielectric material between the substrate and the shielding-leg layer. A magnetoresistive stripe including permeable material extends within the dielectric in said gap near the tip end of the head spaced from the substrate and the shielding-leg layer. An inductive single turn or multiturn writing winding is formed upon a layer of dielectric on the other side of the shielding-leg layer. A second leg layer covers the half of the spiral winding towards the tip end of the head and extends through an opening into contact with the shielding-leg layer.

    INTEGRATED MAGNETORESISTIVE READ, INDUCTIVE WRITE, BATCH FABRICATED MAGNETIC HEAD

    公开(公告)号:AU8408975A

    公开(公告)日:1977-02-24

    申请号:AU8408975

    申请日:1975-08-19

    Applicant: IBM

    Abstract: A thin film head includes a permeable substrate providing a first shield, which may include a more highly permeable layer on its upper surface for shielding, a layer of permeable material thereon providing a second shield and a first write head leg referred to as the shielding-leg layer and a magnetic gap filled with dielectric material between the substrate and the shielding-leg layer. A magnetoresistive stripe including permeable material extends within the dielectric in said gap near the tip end of the head spaced from the substrate and the shielding-leg layer. An inductive single turn or multiturn writing winding is formed upon a layer of dielectric on the other side of the shielding-leg layer. A second leg layer covers the half of the spiral winding towards the tip end of the head and extends through an opening into contact with the shielding-leg layer.

    8.
    发明专利
    未知

    公开(公告)号:DE69612778T2

    公开(公告)日:2001-10-11

    申请号:DE69612778

    申请日:1996-02-13

    Applicant: IBM

    Abstract: An integrated data storage disk and disk drive assembly includes a rotatably supported magnetic disk for storing data. A rotor is fixedly joined to the disk for rotating the disk, and includes a plurality of rotor poles. A stator includes a plurality of stator poles positioned around the rotor for sequentially cooperating with respective ones of the rotor poles for rotating the rotor to rotate the disk. The disk and drive may be fabricated using lithographic and electroplating techniques, and a plurality of coaxial disks may be driven by a single disk drive in exemplary embodiments.

    9.
    发明专利
    未知

    公开(公告)号:DE69204869T2

    公开(公告)日:1996-05-02

    申请号:DE69204869

    申请日:1992-01-16

    Applicant: IBM

    Abstract: An integrated inductive write, magnetoresistive (MR) read thin film magnetic head comprising an open magnetic yoke having outside legs each having a winding thereon and a central leg having an opening across which the MR element is coupled. The outer legs are overlapped at one end to form confronting pole pieces having a transducing gap between the pole pieces, and the central leg is positioned between the pole pieces at one end and joined with the outer legs at the other end to form a symmetrical magnetic yoke structure. The windings are wound in a direction so that the flux produced by equally energizing the windings is equal and opposite in each of the outside legs, is additive at the transducing gap between the pole pieces, and produces no net flux through the central leg.

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