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    1.
    发明专利
    未知

    公开(公告)号：DE69424217D1

    公开(公告)日：2000-06-08

    申请号：DE69424217

    申请日：1994-02-14

    Applicant: IBM

    Inventor： BOJARCZUK JR ,  GAMBINO RICHARD JOSEPH ,  RUF RALPH

    IPC: C22C19/00 ,  C22C38/00 ,  G11B11/10 ,  G11B11/105 ,  H01F1/00 ,  H01F10/12 ,  H01F41/20

    Abstract: A magneto-optic memory and a magnetic material is described incorporating a polarized light beam directed towards a magnetic material and an analyzer for intercepting the polarized light beam after passing through the magnetic material or after being reflected by the magnetic material. The magnetic material includes a matrix of metal such as iron, cobalt, nickel, and alloys thereof and a plurality of separated phases distributed in the matrix such as EuS, EuO, EuOTb, PtMnSb, MnAs, MnBi, MnSb, CrO2, CrTe, GdN, Gd4C, other compounds of a rare earth element and manganese compounds. Terbium or neodymium may be dissolved in the matrix of metal and in the plurality of separated phases. The invention overcomes the problem of providing a magnetic material having a Curie point above room temperature, a square perpendicular hysteresis loop at room temperature, a large magneto-optic rotation at the wavelength of interest and a deposition temperature suitable depositing on polymer substrates.

    2.
    发明专利
    未知

    公开(公告)号：MX165961B

    公开(公告)日：1992-12-11

    申请号：MX1110788

    申请日：1988-04-13

    Applicant: IBM

    Inventor： KOCH ROGER HILSEN ,  LAIBOWITZ ROBERT BENJAMIN ,  UMBACH CORWIN PAUL ,  MARWICK ALAN DAVID ,  CLARK GREGORY JOHN ,  GAMBINO RICHARD JOSEPH

    IPC: G01R33/035 ,  H01L39/22 ,  H01L39/24 ,  G01R33/02

    Abstract: A superconducting device operable at temperatures in excess of 30oK and a method for making the device are described. A representative device is an essentially coplanar SQUID device (10, 56A, 56B, 58A, 58B) formed in a single layer (12) of high-Tc superconducting material, the SQUID device (10, 56A, 56B, 58A, 58B) being operable at temperatures in excess of 60 K. High energy beams (34), for example ion beams, are used to convert selected portions (30) of the high-Tc superconductor layer (12) to nonsuperconducting properties so that the material now has both, superconducting regions (20A, 20B) and nonsuperconducting regions (30). In this manner a superconducting loop (16A, 16B, 20A, 20B) having superconducting weak links (16A, 16B) can be formed to comprise the SQUID device.

    4.
    发明专利
    未知

    公开(公告)号：DE69424217T2

    公开(公告)日：2000-11-30

    申请号：DE69424217

    申请日：1994-02-14

    Applicant: IBM

    Inventor： BOJARCZUK JR ,  GAMBINO RICHARD JOSEPH ,  RUF RALPH

    IPC: C22C19/00 ,  C22C38/00 ,  G11B11/10 ,  G11B11/105 ,  H01F1/00 ,  H01F10/12 ,  H01F41/20

    Abstract: A magneto-optic memory and a magnetic material is described incorporating a polarized light beam directed towards a magnetic material and an analyzer for intercepting the polarized light beam after passing through the magnetic material or after being reflected by the magnetic material. The magnetic material includes a matrix of metal such as iron, cobalt, nickel, and alloys thereof and a plurality of separated phases distributed in the matrix such as EuS, EuO, EuOTb, PtMnSb, MnAs, MnBi, MnSb, CrO2, CrTe, GdN, Gd4C, other compounds of a rare earth element and manganese compounds. Terbium or neodymium may be dissolved in the matrix of metal and in the plurality of separated phases. The invention overcomes the problem of providing a magnetic material having a Curie point above room temperature, a square perpendicular hysteresis loop at room temperature, a large magneto-optic rotation at the wavelength of interest and a deposition temperature suitable depositing on polymer substrates.

    7.
    发明专利
    未知

    公开(公告)号：DE3876473T2

    公开(公告)日：1993-06-09

    申请号：DE3876473

    申请日：1988-03-25

    Applicant: IBM

    Inventor： CLARK GREGORY JOHN ,  GAMBINO RICHARD JOSEPH ,  KOCH ROGER HILSEN ,  LAIBOWITZ ROBERT BENJAMIN ,  MARWICK ALAN DAVID ,  UMBACH CORWIN PAUL

    IPC: G01R33/035 ,  H01L39/22 ,  H01L39/24 ,  H01L39/14

    Abstract: A superconducting device operable at temperatures in excess of 30oK and a method for making the device are described. A representative device is an essentially coplanar SQUID device (10, 56A, 56B, 58A, 58B) formed in a single layer (12) of high-Tc superconducting material, the SQUID device (10, 56A, 56B, 58A, 58B) being operable at temperatures in excess of 60 K. High energy beams (34), for example ion beams, are used to convert selected portions (30) of the high-Tc superconductor layer (12) to nonsuperconducting properties so that the material now has both, superconducting regions (20A, 20B) and nonsuperconducting regions (30). In this manner a superconducting loop (16A, 16B, 20A, 20B) having superconducting weak links (16A, 16B) can be formed to comprise the SQUID device.

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