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    Euo films with enhanced magnetic exchange
    1.
    发明授权
    Euo films with enhanced magnetic exchange 失效
    具有增强磁性交换的EUO膜

    公开(公告)号：US3681245A

    公开(公告)日：1972-08-01

    申请号：US3681245D

    申请日：1970-12-10

    Applicant: IBM

    Inventor： LEE KENNETH

    IPC: H01F1/03 ,  H01F10/187 ,  C04B35/50

    CPC classification number: H01F10/187 ,  H01F1/0313

    Abstract: A FERROMAGNETIC COMPOSITION CONSISTING ESSENTIALLY OF EUO DOPED WITH EXCESS EU AND A MONOVALENT METAL CHOSEN FROM THE GROUP CONSISTING OF AG, CU, AU, NA, K, IN. BY SUCH DROPING, THE CURIE POINT OF EUO IS RAISED FROM 77*K. TO 150*K., WITH AN INCRESE IN THE ELECTRICAL RESISTIVITY AS WELL

    Tailored anisotropy magnetic bubble domain material
    2.
    发明授权
    Tailored anisotropy magnetic bubble domain material 失效
    量身定制的各向异性磁泡区域材料

    公开(公告)号：US3930241A

    公开(公告)日：1975-12-30

    申请号：US51832974

    申请日：1974-10-29

    Applicant: IBM

    Inventor： GUARNIERI C RICHARD ,  LEE KENNETH ,  ONTON AARE

    IPC: G11C11/14 ,  G11C19/08 ,  H01F10/00 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16 ,  H01F41/14

    CPC classification number: G11C19/08 ,  H01F10/00 ,  H01F10/16

    Abstract: A film of magnetic amorphous material capable of supporting bubble domains containing a region therein having a canted direction of magnetic uniaxial anisotropy is described. An example is a magnetic amorphous film having bubble domains therein in which the magnetic uniaxial anisotropy is canted at an angle of 5* from a line perpendicular to the plane of the film. Another example is a film of magnetic amorphous material containing one layer having the magnetic uniaxial anisotropy canted in one direction and a second layer having the magnetic uniaxial anisotropy canted in another direction.

    Abstract translation: 描述能够支撑含有其中具有磁性单轴各向异性倾斜方向的区域的气泡域的磁性无定形材料的膜。 一个例子是具有气泡区域的磁性非晶膜，其中磁性单轴各向异性以垂直于膜平面的线倾斜5度。 另一个例子是含有一个方向的磁性单轴各向异性的一层的磁性无定形材料的膜，另一方向具有磁性单轴各向异性的第二层。

    4.
    发明专利
    未知

    公开(公告)号：DE2407501A1

    公开(公告)日：1974-08-29

    申请号：DE2407501

    申请日：1974-02-16

    Applicant: IBM

    Inventor： LEE KENNETH ,  SUITS JAMES CARR

    IPC: C23C26/00 ,  H01F10/12 ,  H01F41/14 ,  C23C13/04 ,  G11B5/84

    Abstract: A method of making ferromagnetic films of MnGaGe upon a substrate, the films crystallizing in the tetragonal structure and having a grain size of less than one-half micron, made by the method of depositing a first layer of either manganese, or gallium and germanium upon a heated substrate, followed by the deposition of the remaining material upon the first layer, and annealing the deposited layers at a desired temperature until a homogeneous composition is achieved, and then cooling of the film-substrate combination. In this manner, with appropriately chosen temperatures, films having a grain size of less than one-half micron and being particularly usable for storage applications may be fabricated.

    5.
    发明专利
    未知

    公开(公告)号：DE2248839A1

    公开(公告)日：1973-05-30

    申请号：DE2248839

    申请日：1972-10-05

    Applicant: IBM

    Inventor： SUITS JAMES CARR ,  LEE KENNETH ,  SAWATZKY ERICH

    IPC: C22C22/00 ,  C22C28/00 ,  C22C30/00 ,  G03G5/16 ,  H01F1/04 ,  H01F1/047 ,  H01F10/10 ,  H01F10/18 ,  C22C31/02

    Abstract: 1396136 Ferromagnetic material; Vapour depositing or sputtering magnetic films INTERNATIONAL BUSINESS MACHINES CORP 2 Nov 1972 [26 Nov 1971] 50453/72 Headings C7A and C7F A ferromagnetic material consists of a mutual solid solution with atomic proportions indicated by the Formula:- or by the Formula:- The material is useful in data storage media as a thin film (e.g. on a non-magnetic substrate) which may be prepared by RF or D.C. sputtering or by vacuum deposition. The substrate, which may be of Al, glass or ceramic, in the form of a disc, strip or drum, may be kept at 25-420‹C during deposition, and the preferred deposition rate is 2-10Š per second.

    6.
    发明专利
    未知

    公开(公告)号：DE2543238A1

    公开(公告)日：1976-05-06

    申请号：DE2543238

    申请日：1975-09-27

    Applicant: IBM

    Inventor： GUARNIERI C RICHARD ,  LEE KENNETH ,  ONTON AARE

    IPC: G11C11/14 ,  G11C19/08 ,  H01F10/00 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16 ,  H01F41/14 ,  H01F10/02

    Abstract: A film of magnetic amorphous material capable of supporting bubble domains containing a region therein having a canted direction of magnetic uniaxial anisotropy is described. An example is a magnetic amorphous film having bubble domains therein in which the magnetic uniaxial anisotropy is canted at an angle of 5 DEG from a line perpendicular to the plane of the film. Another example is a film of magnetic amorphous material containing one layer having the magnetic uniaxial anisotropy canted in one direction and a second layer having the magnetic uniaxial anisotropy canted in another direction.

    7.
    发明专利
    未知

    公开(公告)号：FR2289998A1

    公开(公告)日：1976-05-28

    申请号：FR7525829

    申请日：1975-08-11

    Applicant: IBM

    Inventor： GUARNIERI C R ,  LEE KENNETH ,  ONTON AAEZ

    IPC: G11C11/14 ,  G11C19/08 ,  H01F10/00 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16 ,  H01F41/14

    Abstract: A film of magnetic amorphous material capable of supporting bubble domains containing a region therein having a canted direction of magnetic uniaxial anisotropy is described. An example is a magnetic amorphous film having bubble domains therein in which the magnetic uniaxial anisotropy is canted at an angle of 5 DEG from a line perpendicular to the plane of the film. Another example is a film of magnetic amorphous material containing one layer having the magnetic uniaxial anisotropy canted in one direction and a second layer having the magnetic uniaxial anisotropy canted in another direction.

    DUAL ELEMENT MAGNETIC TRANSDUCER
    8.
    发明专利
    DUAL ELEMENT MAGNETIC TRANSDUCER 未知

    公开(公告)号：DE3380328D1

    公开(公告)日：1989-09-07

    申请号：DE3380328

    申请日：1983-11-15

    Applicant: IBM

    Inventor： BEST JOHN STEWART ,  LEE KENNETH ,  TSANG CHING HWA

    IPC: G11B5/31 ,  G11B5/39 ,  G11B5/127 ,  G11B5/33

    Abstract: A dual element magnetic transducer in which the thin film M/R read element is transversely biased by flux in the air gap of the inductive write core generated by a bias current supplied to the write winding. Flux in the air gap biases the M/R element because different integral portions of the M/R element have a different spatial relationship to parallel opposing portions of the inductive core. The flux which would normally pass through the gap substantially normal to the sides of the core defining the gap now tends to follow the M/R element along a direction normal or transverse to the media to a point where the distance between the M/R element and the core is smaller than where it entered. By appropriate control of the bias current and the spatial relationships, a relatively efficient, simple to manufacture dual element magnetic transducer is provided.

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