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    4.
    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

    Inventor： CHAINER TIMOTHY JOSEPH ,  HERMAN JR ,  KRONGELB SOL ,  ROMANKIW LUBOMYR TARAS ,  YARMCHUK EDWARD JOHN

    IPC: G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  H02K21/24

    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.

    5.
    发明专利
    未知

    公开(公告)号：DE69612778D1

    公开(公告)日：2001-06-21

    申请号：DE69612778

    申请日：1996-02-13

    Applicant: IBM

    Inventor： CHAINER TIMOTHY JOSEPH ,  HERMAN JR ,  KRONGELB SOL ,  ROMANKIW LUBOMYR TARAS ,  YARMCHUK EDWARD JOHN

    IPC: G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  H02K21/24

    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.

    7.
    发明专利
    未知

    公开(公告)号：FR2332587A1

    公开(公告)日：1977-06-17

    申请号：FR7631436

    申请日：1976-10-11

    Applicant: IBM

    Inventor： KRONGELB SOL ,  MAYADAS ASHOK F ,  BAJOREL CHRISTOPHER H ,  HEMPSTEAD ROBERT D

    IPC: G11B5/39 ,  G11B5/30

    Abstract: A magnetoresistive permalloy film is deposited upon a substrate and coated with a separating layer composed of titanium or a similar high resistivity, conductive material. A soft biasing layer of a material such as permalloy or a hard biasing material such as cobalt chromium is deposited upon the separating layer to complete a sandwich. All layers are coextensive in outline because their outlines are formed by a single etching step.

    8.
    发明专利
    未知

    公开(公告)号：DE2650484A1

    公开(公告)日：1977-06-08

    申请号：DE2650484

    申请日：1976-11-04

    Applicant: IBM

    Inventor： BAJOREK CHRISTOPHER HENRY ,  HEMPSTEAD ROBERT DOUGLAS ,  KRONGELB SOL ,  MAYADAS ASHOK FRANK

    IPC: G11B5/39 ,  G11B5/30

    Abstract: A magnetoresistive permalloy film is deposited upon a substrate and coated with a separating layer composed of titanium or a similar high resistivity, conductive material. A soft biasing layer of a material such as permalloy or a hard biasing material such as cobalt chromium is deposited upon the separating layer to complete a sandwich. All layers are coextensive in outline because their outlines are formed by a single etching step.

    9.
    发明专利
    未知

    公开(公告)号：DE2358875A1

    公开(公告)日：1974-06-27

    申请号：DE2358875

    申请日：1973-11-27

    Applicant: IBM

    Inventor： BAJOREK CHRISTOPHER HENRY ,  KRONGELB SOL ,  MAYADAS ASHOK FRANK

    IPC: G11C11/14 ,  G01R33/09 ,  G11B5/39 ,  G11B5/72 ,  G11C19/08 ,  H01C1/034 ,  H01C10/10 ,  H01F41/32 ,  H01L43/08 ,  G11B5/30

    Abstract: 1391150 Magnetic heads INTERNATIONAL BUSINESS MACHINES CORP 12 Oct 1973 [30 Nov 1972] 47709/73 Heading G5R [Also in Division H3] Decrease of sensitivity due to oxidization of a magnetoresistive thin film magnetic bubble sensor or magnetic tape reading head is prevented by an overlay of Al 2 O 3 or Si 3 N 4 . The magnetoresistive material may be permalloy, or an alloy of Ni-Fe, Ni-Fe-Co, Ni-Co or Fe-Co, and have a thickness of between 200Š and 1000Š. The overlay may be of twice this thickness. As applied to sensing magnetic bubbles 4, Fig. 1, in a magnetic plate 2, the sensor consists of a permalloy element 10 having an easy axis of magnetization in the direction of current flow from a source 12 through the element. The presence of a magnetic bubble changes the element resistance which is detected by the change of voltage across the source. A layer of a dielectric material S and a sputtered layer 18 of Al 2 O 3 or Si 3 N 4 extend over the magnetic plate and the magnetoresistive element. Similar layers are applied over the reading head 20, Fig. 2, of a moving magnetic tape 22, the magnetoresistive sensor 10 being similar to that shown in Fig. 1.

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