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| Number | Title | Issue Date |
| 7441326 | Manufacturing method of a magnetic sensor In a magnetic sensor, a lower terminal layer, a magnetosensitive layer, and a cover film are simultaneously patterned into substantially the same size. The opposing surface of the lower terminal layer, which opposes the magnetosensitive film is substantially superpo... | 10/28/2008 |
| 7360302 | Manufacturing method of a magnetic sensor A magnetic sensor comprises magnetoresistive elements and permanent magnet films, which are combined together to form GMR elements formed on a quartz substrate having a square shape, wherein the permanent magnet films are paired and connected to both ends of the mag... | 04/22/2008 |
| 7318947 | Method and apparatus for controlling magnetostriction in a spin valve sensor A method and system for providing a magnetic element are described. The method and system include providing a pinned layer, fabricating a metallic spacer layer and oxidizing a portion of the spacer layer in an environment including at least oxygen and a gas inert wi... | 01/15/2008 |
| 7240418 | Method of manufacturing slider of thin-film magnetic head A slider includes a slider main body and a thin-film magnetic head element. The slider main body has an air bearing surface, an air inflow end, and an air outflow end. The air bearing surface has a first part closer to the air outflow end, a second part closer to th... | 07/10/2007 |
| 7228618 | Method for fabricating a magnetic head A magnetic head having a spin valve sensor that is fabricated utilizing an Al2O3, NiMn0, Si seed layer upon which a PtMn spin valve sensor layer structure is subsequently fabricated. In the preferred embodiment, the Si layer has a thickness of ... | 06/12/2007 |
| 7137192 | Method for manufacturing thin film head A thin film head comprising a GMR element formed of an antiferromagnetic layer, a pinning layer, a nonmagnetic conductive layer and a free magnetic layer; and a pair of the right and the left laminated longitudinal biasing layers, each of the layers containing a har... | 11/21/2006 |
| 7111384 | Method for manufacturing magnetic head including coil A method for manufacturing a magnetic recording head includes the steps of forming a first lifting layer and a second lifting layer on a bottom core layer, forming an inorganic insulating layer in a gap between the first lifting layer and the second lifting layer, f... | 09/26/2006 |
| 7103962 | Method for manufacturing a thin film head A magnetoresistive thin film head comprises a magnetoresistive element including an antiferromagnetic layer, a pinned layer, a nonmagnetic conductive layer and a free magnetic layer, and a pair of the right and the left laminated transverse biasing layers, each incl... | 09/12/2006 |
| 7100267 | Magnetic head, method for producing same, and magnetic recording and/or reproducing system A method for producing a magnetic head, including the steps of forming a magnetic body on a substrate, the magnetic body including a principal plane facing the substrate and a rear plane opposite to the principal plane; applying a beam to the rear plane of the magne... | 09/05/2006 |
| 7020951 | Method of making a merged magnetic read head and write head An antiferromagnetic stabilization scheme is employed in a magnetic head for magnetically stabilizing a free layer of a spin valve. This is accomplished by utilizing an antiferromagnetic oxide film below a spin valve sensor in a read region and first and second lead... | 04/04/2006 |
| 6910259 | Method of making a spin valve read head with antiferromagnetic oxide film as longitudinal bias layer and portion of first read gap An antiferromagnetic stabilization scheme is employed in a magnetic head for magnetically stabilizing a free layer of a spin valve. This is accomplished by utilizing an antiferromagnetic oxide film below a spin valve sensor in a read region and first and second lead... | 06/28/2005 |
| 6802114 | Method of making a spin valve sensor of a read head with a triple antiparallel coupled free layer structure A method of making a dual spin valve sensor includes the steps of forming first and second pinned layer structures, forming antiferromagnetic first and second pinning layers exchange coupled to the first and second pinned layer structures, forming an antiparallel (A... | 10/12/2004 |
| 6751845 | Method of making a continuous junction spin valve read head stabilized without hard bias layers A spin valve sensor with a continuous junction is provided which has a sensor portion of a free layer longitudinally biased by first and second AFM biasing layers that are exchange coupled to first and second side portions of the free layer and a sensor portion of a... | 06/22/2004 |
| 6751844 | Method of making a spin valve sensor with stable antiparallel pinned layer structure exchange coupled to a nickel oxide pinning layer A spin valve sensor has a pinned layer structure that has a net positive stress induced uniaxial anisotropy that promotes a pinning of the pinned layer structure in a pinned direction for stabilizing the pinning of the pinned layer structure at high temperatures nea... | 06/22/2004 |
| 6694604 | Method of making a write head with self-aligned pedestal shaped pole tip which are separated by a zero throat height defining layer A merged magnetic head has a top first pole tip layer and a bottom second pole tip layer which are located entirely between an air bearing surface and a coil layer. A write gap layer separates the pole tip layers from one another at the ABS. A zero throat... | 02/24/2004 |
| 6678942 | Thin film magnetic head and method of manufacturing the same A method of manufacturing the same in an accurate and stable manner, in which a magnetic path length of a thin film coil is shortened by decrease a distance between adjacent coil windings of at least one layer thin film coil. On a first magnetic layer 37,... | 01/20/2004 |
| 6662432 | Method of making a free layer for a spin valve sensor with a lower uniaxial anisotropy field A free layer for a spin valve sensor includes a cobalt iron (CoFe) film which has an easy axis oriented perpendicular to an air bearing surface (ABS) of a read head and a nickel iron (NiFe) film which has an easy axis oriented parallel to the ABS and para... | 12/16/2003 |
| 6460243 | Method of making low stress and low resistance rhodium (RH) leads A method of making rhodium (Rh) lead layers for a read sensor comprises a first step of obliquely ion beam sputtering the rhodium (Rh) lead layer followed by a second step of annealing. This method results in rhodium (Rh) lead layers which have reduced st... | 10/08/2002 |
| 6269533 | Method of making a patterned magnetic recording head A thin film magnetic recording head utilizing a timing based servo pattern is fabricated using a focused ion beam (FIB). The recording head is fabricated by sputtering a magnetically permeable thin film onto a substrate. A gap pattern, preferably a timing... | 08/07/2001 |
| 6221172 | Manufacturing method of spin-valve magnetoresistive thin film element A spin-valve magnetoresistive element includes a plurality of layers. The magnetic moment of a first pinned magnetic layer is smaller than the magnetic moment of a second pinned magnetic layer. In this case, a magnetic field of 100 to 1,000 Oe is applied ... | 04/24/2001 |
| 5713122 | Hard-film stabilized soft-film biased magnetoresistive sensor with an alumina under layer pattern for improved longitudinal servo-positioning linearity and stability A magnetoresistive sensor design and fabrication process that provides improved microtrack profile linearity for servo elements while simultaneously providing stable and linear data sensing elements suitable for high density tape head applications. The st... | 02/03/1998 |
| 5640753 | Method of fabricating an inverted magnetoresistive head A method of fabricating an inverted magnetoresistive head is disclosed. The method includes fabricating a writer. The writer includes a bottom pole positioned within a recessed substrate. The bottom pole is filled with copper coils and polymer. A write ga... | 06/24/1997 |
| 5520716 | Al2 O3 -TiC sintered product and substrate for magnetic heads An Al2 O3 -TiC sintered product comprising Al2 O3 as a main component and containing TiC in an amount of from 20 to 40% by weight, wherein the average particle diameter of Al2 O3 particles ... | 05/28/1996 |
| 5225953 | Magnetic thin film head of a single magnetic pole for perpendicular recording and reproduction A perpendicular magnetic recording/reproducing thin film head of the single pole type formed of a magnetic member provided on its main surface with a grooved portion, and a non-magnetic material filled in the grooves of the grooved portion, thin film cond... | 07/06/1993 |
| 5195004 | Method of manufacturing a magnetic core half A magnetic head comprises a pair of magnetic core halves, heat-resistant thin films and ferromagnetic thin films, the pair of magnetic core halves being opposed to each other through a non-magnetic material such as SiO2 to form a magnetic gap. ... | 03/16/1993 |
| 5104739 | Laminated magnetic material and method of producing the same A laminated magnetic material suitable for use as a material of a magnetic core has a plurality of layers of an Fe-Si-Al type magnetic metal and a plurality of electrically insulating layers both of which layers are laminated alternatingly, the magnetic m... | 04/14/1992 |
| 5079035 | Method of making a magnetoresistive read transducer having hard magnetic bias A magnetoresistive (MR) read transducer having passive end regions separated by a central active region in which an MR layer is formed which extends over substantially only the central active region and in which a hard magnetic layer is formed in each end... | 01/07/1992 |
| 5063653 | Method of producing a core for a magnetic head A method of producing a ferrite/Sendust composite core for a magnetic head, in which a metal film made of any one of metals of Zn, Cr, Fe, Cd, Co, Ni, Sn and Pb is formed on a surface, where a track of the core is formed, of a gapped bar composed of ferri... | 11/12/1991 |
| 5029380 | Method of making a composite core transducer A magnetic transducer and manufacturing method, where a transducer core is made from a composite block of magnetic material. The composite block has a first portion made of a first magnetic material, and a second portion made of a second magnetic material... | 07/09/1991 |
| 5022140 | Method of manufacturing magnetic head In a magnetic head a metal magnetic layer and a non-magnetic layer are sequentially formed on a pair of magnetic cores in which track widths are formed by a predetermined pitch. The metal magnetic layer and the non-magnetic layer formed outside the track ... | 06/11/1991 |
| 5020212 | Method of manufacturing a magnetic head A method of manufacturing a magnetic head includes a first step of forming rectilinear V grooves on the top surface of a substrate, a second step of forming magnetic films on slant faces of the V grooves, a third step of leveling the top surface of the su... | 06/04/1991 |
| 5007158 | Method of manufacturing magnetic heads A magnetic head comprises a pair of magnetic core halves (1a, 1b), which are abutted with each other through a nonmagnetic material to define a magnetic gap (2), and ferromagnetic thin films (3a, 3b). The magnetic core halves (1a, 1b), which are formed of... | 04/16/1991 |
| 4942658 | Method for manufacturing a magnetic head core with a flux gap having a precisely controlled length A process for assembling the I core and C core element of a ferrite magnetic transducer core includes the steps of depositing by sputtering a gap material on the gap face of one core element. A magnetic material of the type which can be bonded to ferrite ... | 07/24/1990 |
| 4899241 | Method of manufacturing a magnetic head having a thin film in a portion of its core A magnetic head comprises a first magnetic core member of a magnetic material bulk having one surface thereof as a gap forming surface, a gap member of a non-magnetic material attached to at least a portion of the gap forming surface of the first magnetic... | 02/06/1990 |
| 4890378 | Method for manufacturing a magnetic head core having a magnetic film A magnetic head in which a first magnetic film made of a material of high saturation magnetic flux density is deposited on the surface of a block made of a high permeability material and which contains a groove for winding. A nonmagnetic film made of a no... | 01/02/1990 |
| 4821406 | Process for producing a magnetic head A process for producing a magnetic head having improved registry between opposite track width controlling grooves. A magnetic gap forming nonmagnetic thin film is deposited on a first magnetic oxide substrate made of a magnetic oxide material, and a thin ... | 04/18/1989 |
| 4815197 | Process for producing magnetic head A process for producing a magnetic head having a precisely defined recording width but which can be produced using simple process steps. Track width controlling grooves are formed in at least one of two core block halves made of a magnetic material. A thi... | 03/28/1989 |
| 4769898 | Method of producing a magnetic head In a magnetic head comprising a head gap and a magnetic core composed of both a high permeability ferrite and a magnetic alloy, said magnetic alloy being disposed in the vicinity of said head gap, the improvement comprising a corrugation provided at a junction... | 09/13/1988 |
| 4704788 | Method for making magnetic heads A method of making of magnetic head having core halves made from ferrite with a sputtered or vaporized soft magnetic alloy of a high permeability such as sendust on the ferrite. The operating magnetic gap of the head is sefined by the soft magnetic alloy ... | 11/10/1987 |
| 4682256 | Method of manufacturing a composite type magnetic head A composite type magnetic head comprises first and second magnetic head core halves made of a magnetic ferrite, a gap member interposed between the first and second magnetic head core halves, a first narrowed part which is formed on the first magnetic hea... | 07/21/1987 |
