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    3.
    发明专利
    未知

    公开(公告)号：AT192260T

    公开(公告)日：2000-05-15

    申请号：AT97307860

    申请日：1994-02-16

    Applicant: IBM

    Inventor： BAJOREK CHRISTOPHER H ,  FONTANA ROBERT E ,  SNYDER CLINT D ,  THOMPSON DAVID A ,  WILLIAMS MASON L ,  YEACK-SCRANTON CELIA E

    IPC: G11B5/10 ,  G11B5/127 ,  G11B5/255 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/49 ,  G11B17/32 ,  G11B5/105 ,  G11B15/64 ,  G11B5/40

    Abstract: A magnetic transducer and suspension assembly suitable for use in both contact recording and in winchester-type applications is described. A generally rectangular elongated flat suspension member includes a vertical-type inductive read/write transducer formed integrally with the suspension member and is embedded in one end of the suspension member. The vertical inductive transducer is suitable for vertical recording applications. The transducer vertical magnetic pole tip and magnetic yoke structure are formed at one end of the suspension member with the vertical pole tip extending to and exposed at an air bearing surface formed on the lower surface of a slider-shaped protrusion extending from the lower surface of the end of the suspension member. The integral transducer/suspension assembly can be adapted for either flying above the recording media or for use in continuous contact with the recording media. The air bearing surface is formed on the lower surface of a wear pad. The fabrication of the transducer/suspension assembly is adapted to be performed at the wafer level.

    INTEGRATED TRANSDUCER-SUSPENSION ASSEMBLY FOR VERTICAL RECORDING
    4.
    发明专利
    INTEGRATED TRANSDUCER-SUSPENSION ASSEMBLY FOR VERTICAL RECORDING 未知

    公开(公告)号：CA2110135C

    公开(公告)日：1998-09-15

    申请号：CA2110135

    申请日：1993-11-26

    Applicant: IBM

    Inventor： BAJOREK CHRISTOPHER H ,  FONTANA ROBERT E ,  SNYDER CLINT D ,  THOMPSON DAVID A ,  WILLIAMS MASON L ,  YEACK-SCRANTON CELIA E

    IPC: G11B5/10 ,  G11B5/127 ,  G11B5/255 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/49 ,  G11B17/32

    Abstract: An integral combination magnetic transducer and suspension assembly suitable for use in both contact recording and in winchester-type applications is described. A generally rectangular elongated flat suspension member includes a vertical-type inductive read/write transducer formed integrally with the suspension member and is embedded in one end of the suspension member. The vertical inductive transducer is suitable for vertical recording applications. The transducer vertical magnetic pole tip and magnetic yoke structure are formed at one end of the suspension member with the vertical pole tip extending to and exposed at an air bearing surface formed on the lower surface of a slider-shaped protrusion extending from the lower surface of the end of the suspension member. The integral transducer/suspension assembly can be adapted for either flying above the recording media or for use in continuous contact with the recording media. The air bearing surface is formed on the lower surface of a wear pad. The fabrication of the transducer/suspension assembly is adapted to be performed at the wafer level.

    SELF-BIASED MAGNETORESISTIVE SENSOR
    5.
    发明专利
    SELF-BIASED MAGNETORESISTIVE SENSOR 未知

    公开(公告)号：CA1009749A

    公开(公告)日：1977-05-03

    申请号：CA186207

    申请日：1973-11-20

    Applicant: IBM

    Inventor： BAJOREK CHRISTOPHER H ,  ROMANKIW LUBOMYR T ,  THOMPSON DAVID A

    IPC: G01R33/02 ,  G01R33/09 ,  G11B5/39 ,  G11C11/14 ,  H01F10/08 ,  H01F10/32

    Abstract: 1450204 Magnetic heads INTER. NATIONAL BUSINESS MACHINES CORP 9 Nov 1973 [29 Dec 1972] 52064/73 Heading G5R [Also in Division H3] A magnetic sensing head comprises a unitary structure of a layer of magneto-resistive material 16 for sensing a magnetic field and an adjacent biasing layer 14 of permantly magnetized material to bias the layer 16 magnetically to a required operating range, layers 14 and 16 being in direct contact with one another. The layers 14 and 16 may be co-planar or laminated, with the direction of magnetization, arrow M h , of bias layer 14 parallel or perpendicular to the easy axis and sense current direction, arrow I, of layer 16. Layer 16 is of permalloy material, e.g. Ni-Fe, Ni-Co or Ni-Fe-Co, and the bias layer 14 may be of ferrite. Layers 14,16, may be evaporated, sputtered or electroplated on a substrate 12 with thicknesses of 200 to 2000 and 50 to 400 Šngstroms respectively. The bias may be established due to exchange or epitaxially coupled layers 14, 16, there being direct atomic contact between the layers. In another form the biasing layer 14 is a composite layer comprising exchange or epitaxially coupled films with a magnetically soft film atomically coupled to a magnetically hard film, e.g. Ni-Fe deposited on a Fe 2 O 3 , a Fe 2 O 3 on Ni-Fe, Co or Co-rich Ni-Co on vanadium or chromium, or binary Co-P. In a further form, the bias layer, or two bias layers with the sensing layer therebetween, is or are formed by preferentially oxiding one or both surfaces of a permalloy sensor strip. Alternatively such surfaces may have localized zones with a raised coercivity produced by chemical reaction with chlorides or sulphates, etching to roughen the surfaces, or by selective deposition of materials which exchange couple to the sensing layer. The combined sensing and bias layers may be surrounded by a magnetic shield (8) in a record head, Fig. 1 (not shown). The head may be used for reading tapes, discs, magnetic ink, or sheets capable of generating and transporting magnetic bubble domains.

    6.
    发明专利
    未知

    公开(公告)号：DE69424194D1

    公开(公告)日：2000-05-31

    申请号：DE69424194

    申请日：1994-02-16

    Applicant: IBM

    Inventor： BAJOREK CHRISTOPHER H ,  FONTANA ROBERT E ,  SNYDER CLINT D ,  THOMPSON DAVID A ,  WILLIAMS MASON L ,  YEACK-SCRANTON CELIA E

    IPC: G11B5/10 ,  G11B5/127 ,  G11B5/255 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/49 ,  G11B17/32 ,  G11B5/105 ,  G11B15/64 ,  G11B5/40

    Abstract: A magnetic transducer and suspension assembly suitable for use in both contact recording and in winchester-type applications is described. A generally rectangular elongated flat suspension member includes a vertical-type inductive read/write transducer formed integrally with the suspension member and is embedded in one end of the suspension member. The vertical inductive transducer is suitable for vertical recording applications. The transducer vertical magnetic pole tip and magnetic yoke structure are formed at one end of the suspension member with the vertical pole tip extending to and exposed at an air bearing surface formed on the lower surface of a slider-shaped protrusion extending from the lower surface of the end of the suspension member. The integral transducer/suspension assembly can be adapted for either flying above the recording media or for use in continuous contact with the recording media. The air bearing surface is formed on the lower surface of a wear pad. The fabrication of the transducer/suspension assembly is adapted to be performed at the wafer level.

    Integrated Transducer-Suspension Assembly for Vertical Recording
    8.
    发明专利
    Integrated Transducer-Suspension Assembly for Vertical Recording 未知

    公开(公告)号：CA2110135A1

    公开(公告)日：1994-09-16

    申请号：CA2110135

    申请日：1993-11-26

    Applicant: IBM

    Inventor： BAJOREK CHRISTOPHER H ,  FONTANA ROBERT E ,  SNYDER CLINT D ,  THOMPSON DAVID A ,  WILLIAMS MASON L ,  YEACK-SCRANTON CELIA E

    IPC: G11B5/10 ,  G11B5/127 ,  G11B5/255 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/49 ,  G11B17/32

    Abstract: A magnetic transducer and suspension assembly suitable for use in both contact recording and in winchester-type applications is described. A generally rectangular elongated flat suspension member includes a vertical-type inductive read/write transducer formed integrally with the suspension member and is embedded in one end of the suspension member. The vertical inductive transducer is suitable for vertical recording applications. The transducer vertical magnetic pole tip and magnetic yoke structure are formed at one end of the suspension member with the vertical pole tip extending to and exposed at an air bearing surface formed on the lower surface of a slider-shaped protrusion extending from the lower surface of the end of the suspension member. The integral transducer/suspension assembly can be adapted for either flying above the recording media or for use in continuous contact with the recording media. The air bearing surface is formed on the lower surface of a wear pad. The fabrication of the transducer/suspension assembly is adapted to be performed at the wafer level.

    9.
    发明专利
    未知

    公开(公告)号：FR2308176A1

    公开(公告)日：1976-11-12

    申请号：FR7605146

    申请日：1976-02-17

    Applicant: IBM

    Inventor： AHN KIE Y ,  BAJOREK CHRISTOPHER H ,  ROSENBERG ROBERT ,  TU KING N

    IPC: G11B5/66 ,  C01G49/02 ,  C23C14/08 ,  G11B5/64 ,  G11B5/73 ,  G11B5/738 ,  H01F10/18 ,  H01F10/20 ,  H01F41/14 ,  H01F41/18 ,  H01F41/28 ,  H01F1/10

    Abstract: A first thin film of appropriate texture, lattice constant, and crystal structure, such as body centered cubic vanadium or chromium with (110) texture is deposited upon a rigid or flexible substrate forming a plurality of polycrystals. A ferrite such as magnetite (Fe3O4) is sputtered from a target onto the first thin film forming a mixture of gamma Fe2O3 and Fe3O4 substantially completely without formation of Fe or other oxides of iron, providing good magnetic characteristics and resistance to corrosion. The substrate temperature can be maintained as low as 200 DEG C for both steps when sputtering or evaporation is employed.

    Transducer-suspension assembly for a magnetic storage device
    10.
    发明专利
    Transducer-suspension assembly for a magnetic storage device 未知

    公开(公告)号：SG45157A1

    公开(公告)日：1998-01-16

    申请号：SG1996000767

    申请日：1994-02-16

    Applicant: IBM

    Inventor： BAJOREK CHRISTOPHER H ,  FONTANA ROBERT E ,  SNYDER CLINT D ,  THOMPSON DAVID A ,  WILLIAMS MASON L ,  YEACK-SCRANTON CELIA E

    IPC: G11B5/10 ,  G11B5/127 ,  G11B5/255 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/49 ,  G11B17/32 ,  G11B5/105 ,  G11B15/64

    Abstract: A magnetic transducer and suspension assembly suitable for use in both contact recording and in winchester-type applications is described. A generally rectangular elongated flat suspension member includes a vertical-type inductive read/write transducer formed integrally with the suspension member and is embedded in one end of the suspension member. The vertical inductive transducer is suitable for vertical recording applications. The transducer vertical magnetic pole tip and magnetic yoke structure are formed at one end of the suspension member with the vertical pole tip extending to and exposed at an air bearing surface formed on the lower surface of a slider-shaped protrusion extending from the lower surface of the end of the suspension member. The integral transducer/suspension assembly can be adapted for either flying above the recording media or for use in continuous contact with the recording media. The air bearing surface is formed on the lower surface of a wear pad. The fabrication of the transducer/suspension assembly is adapted to be performed at the wafer level.

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