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| Number | Title | Issue Date |
| 8059372 | CPP GMR read head with minimum shunting loss Biasing schemes used for CIP GMR devices were previously thought to be impractical for CPP devices due to current shunting by the abutted hard magnets. In the present invention the CPP stripe is a narrow conductor directly above the free layer. The resistivity of th... | 11/15/2011 |
| 7933099 | Thin-film magnetic head having electric lapping guide and method of making the same A magnetic head having precisely controlled MR height has a slider substrate and a magnetic head part provided on the slider substrate. The magnetic head part includes, seeing from a medium-opposing surface side, a magnetism detecting element; an upper magnetic shie... | 04/26/2011 |
| 7881020 | Extraordinary magnetoresistive (EMR) device with novel lead structure An extraordinary magnetoresistive sensor (EMR sensor) having reduced size and increased resolution is described. The sensor includes a plurality of electrically conductive leads contacting a magnetically active layer and also includes an electrically conductive shun... | 02/01/2011 |
| 7839606 | Magnetic head having oxidized read sensor edges to reduce sensor current shunting A magnetic read head of either CIP or CPP configuration is disclosed having a read sensor having oxidized non-conductive regions. The read sensor has a front edge, a rear edge, a left-side edge and a right-side edge. For a CIP configuration, the front edge and the r... | 11/23/2010 |
| 7768748 | Magnetoresistive sensor with overlaid combined leads and shields An improved magnetic head for a hard disk drive including a lead overlaid read head in which the read width and read gap are reduced. The read width, which corresponds to the distance between the inner ends of the overlaid electrical leads, is reduced by the fabrica... | 08/03/2010 |
| 7746601 | Magneto-resistance effect element with a surface contacting with a side face of electrode having a magnetization direction An area of an element can be made small and fluctuation in area can be reduced. A magneto-resistance effect element is provided with a first electrode with an end face; a magneto-resistance effect film which is formed such that a surface thereof comes in contact wit... | 06/29/2010 |
| 7719799 | Magnetoresistive element, magnetic head and magnetic recording/reproducing apparatus A magnetoresistive element has a first magnetic layer and a second magnetic layer separate from each other, the first magnetic layer and the second magnetic layer each having a magnetization whose direction is substantially pinned, and a non-magnetic conductive laye... | 05/18/2010 |
| 7710689 | Narrow track read sensor A narrow track width read sensor having a high magnetoresistive sensitivity is made using a self-aligned process which requires the use of only a single resist mask. A plurality of sensor layers which includes a top layer of noble metal is deposited over a substrate... | 05/04/2010 |
| 7652855 | Magnetic sensor with extended free layer and overlaid leads A lead overlay design of a magnetic sensor is described with sensor and free layer dimensions such that the free layer is stabilized by the large demagnetization field due to the shape anisotropy. In one embodiment the giant magnetoresistive (GMR) effect under the l... | 01/26/2010 |
| 7573684 | Current-in-plane differential magnetic tri-layer sensor An apparatus comprises a first current-in-plane sensor, a first magnetic field source for biasing the first current-in-plane sensor in a first direction, a second current-in-plane sensor positioned parallel to the first current-in-plane sensor, a second magnetic fie... | 08/11/2009 |
| 7489481 | CCP Head having leads of substantially the same size and shape and not intervening between a shield layer and a MR element A magnetic head is provided for further improving a correlation between the dynamic characteristics and static characteristics. A lower magnetic shield layer, a magneto-resistive layer, and an upper magnetic shield layer are laminated on a base in this order. A lowe... | 02/10/2009 |
| 7471492 | Magnetoresistive element, magnetic head and magnetic recording/reproducing apparatus A magnetoresistive element has a first magnetic layer and a second magnetic layer separate from each other, the first magnetic layer and the second magnetic layer each having a magnetization whose direction is substantially pinned, and a non-magnetic conductive laye... | 12/30/2008 |
| 7466522 | Electrical lead structures having crystalline structures that match underlying magnetic hard bias layers for magnetoresistive sensors A magnetic head including an electrical lead layer that is comprised of a material having an ordered-phase crystalline structure. In a preferred embodiment, the ordered-phase crystalline structure of the electrical lead is epitaxially matched to the crystalline stru... | 12/16/2008 |
| 7463455 | Magnetoresistive head having first and second shield layers between first and second lead layers A magnetic head provided with magnetoresistance effect element, the magnetic head comprises first shielding layer superimposed on one surface of the magnetoresistance effect element and whose area is larger than that of this one surface, a first lead layer formed ra... | 12/09/2008 |
| 7436635 | Current perpendicular to plane (CPP) magnetoresistive sensor having a highly conductive lead structure A current perpendicular to plane (CPP) sensor having a sensor stack lead layer that is resistant to corrosion. The sensor includes a sensor stack having a capping layer at its top. A lead layer constructed of a non-corroding material such as Ru, Rh, Au or some simil... | 10/14/2008 |
| 7420786 | Arrangement of a magneto-resistance effect element having a surface contacting a side face of an electrode and magnetic memory using this arrangement An area of an element can be made small and fluctuation in area can be reduced. A magneto-resistance effect element is provided with a first electrode with an end face; a magneto-resistance effect film which is formed such that a surface thereof comes in contact wit... | 09/02/2008 |
| 7419610 | Method of partial depth material removal for fabrication of CPP read sensor A method for fabricating a read head sensor for a magnetic disk drive is presented. The method includes providing a layered wafer stack to be shaped, where the layered wafer stack includes a free layer, a barrier layer and a pinned layer. A single- or multi-layered ... | 09/02/2008 |
| 7408746 | Magnetoresistive device and method of manufacturing same, thin-film magnetic head, head gimbal assembly, head arm assembly and magnetic disk drive A magnetoresistive device comprises: a first shield layer and a second shield layer disposed with a space from each other in the direction of thickness; an MR element disposed between the first and second shield layers; and a layered structure disposed between the f... | 08/05/2008 |
| 7408730 | Reproducing head and magnetic disk drive A reproducing head including a read element, first and second electrodes provided at the opposite ends of the read element, a ground electrode provided between the first and second electrodes, a first constant current circuit for passing a first constant current bet... | 08/05/2008 |
| 7403358 | Thin film magnetic head, magnetic head device, magnetic recording/reproducing device and method for fabricating a thin film magnetic head A magnetoresistive effective film responds commensurate with an external magnetic field. Magnetic domain-controlling films apply a perpendicular biasing magnetic field to the magnetoresistive effective film. The forefronts of first electrode films constituting a pai... | 07/22/2008 |
| 7394626 | Magnetoresistance device with a diffusion barrier between a conductor and a magnetoresistance element and method of fabricating the same A magnetoresistance device is provided for improving thermal stability of a magnetoresistance element by preventing inter-diffusion between a conductor (such as a via and an interconnection) for connecting the magnetoresistance element to another element and layers ... | 07/01/2008 |
| 7368299 | MTJ patterning using free layer wet etching and lift off techniques Methods of patterning magnetic tunnel junctions (MTJ's) of magnetic memory devices, wherein the second magnetic layer or free layer of a magnetic stack may be patterned using a wet etch technique. A cap layer is formed over the free layer after the free layer is pat... | 05/06/2008 |
| 7369374 | Current in plane magnetoresistive sensor having a contiguous hard bias layer located at back edge of stripe height A current in plane giant magnetoresistive (GMR) sensor having a hard bias layer that extends along the back edge (strip height) of the sensor rather than from the sides of the sensor. The hard bias layer preferably extends beyond the track width of the sensor. Elect... | 05/06/2008 |
| 7367095 | Method of making an acoustically coupled transformer Embodiments of an acoustically-coupled transformer have a first stacked bulk acoustic resonator (SBAR) and a second SBAR. Each of the SBARs has a lower film bulk acoustic resonator (FBAR) and an upper FBAR, and an acoustic decoupler between the FBARs. The upper FBAR... | 05/06/2008 |
| 7363699 | Method for manufacturing a magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in hard magnetic bias layers A magnetoresistive sensor having a hard bias layer with an engineered magnetic anisotropy in a direction substantially parallel with the medium facing surface. The hard bias layer may be constructed of CoPt, CoPtCr or some other magnetic material and is deposited ov... | 04/29/2008 |
| 7360300 | Method for manufacturing a magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in a hard magnetic pinning layer A magnetoresistive sensor having a hard magnetic pinning layer with an engineered magnetic anisotropy in a direction substantially perpendicular to the medium facing surface. The hard magnetic pinning layer may be constructed of CoPt, CoPtCr, or some other magnetic ... | 04/22/2008 |
| 7362548 | Magnetic sensor and manufacturing method therefor 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 |
| 7360299 | Method for manufacturing a magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in a hard magnetic in-stack bias layer A magnetoresistive sensor having an in stack bias layer with an engineered magnetic anisotropy in a direction parallel with the medium facing surface. The in-stack bias layer may be constructed of CoPt, CoPtCr or some other magnetic material and is deposited over an... | 04/22/2008 |
| 7360297 | Magnetoresistive sensor with antiparallel coupled lead/sensor overlap region A spin valve sensor with an antiparallel coupled lead/sensor overlap region is provided comprising a ferromagnetic bias layer antiparallel coupled to a free layer in first and second passive regions where first and second lead layers overlap the spin valve sensor la... | 04/22/2008 |
| 7360301 | Method of manufacturing a thin film magnetic head The invention is directed to improvement of a write element of a thin film magnetic head. The first pole portion projects from a flat surface of a first yoke portion at a medium-facing surface side and having a reduced width at its upper end. The second pole portion... | 04/22/2008 |
| 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 |
| 7359149 | Composite type thin-film magnetic head with reduced capacitance between leads for read and write head elements A composite type thin-film magnetic head is provided, which comprises: a write head element; a pair of terminal pads for the write head element; a pair of lead conductors for the write head element, electrically connecting the write head element to the pair of termi... | 04/15/2008 |
| 7330338 | Method for adjusting pitch and roll in a head suspension Apparatus and method for adjusting at least one of a pitch and roll parameter of a gimbal for a head suspension assembly having a pair of members contacting at least one gimbal arm at spaced apart locations and having an additional member contacting the gimbal arm i... | 02/12/2008 |
| 7330339 | Structure providing enhanced self-pinning for CPP GMR and tunnel valve heads A magnetic head having improved self-pinning. The head includes a sensor having an antiparallel (AP) pinned layer structure, where the AP pinned layer structure includes at least two pinned layers having magnetic moments that are self-pinned antiparallel to each oth... | 02/12/2008 |
| 7327540 | Hard biased materials for recording head applications A hard bias layer that forms an abutting junction with a free layer in a GMR element and is comprised of FePtCu or FePtCuX where X is B, C, O, Si, or N is disclosed. The FePtCu layer has a composition of about 45 atomic % Fe, 45 atomic % Pt, and 10 atomic % Cu and d... | 02/05/2008 |
| 7327538 | Lead overlay sensor with improved current path In a lead overlay (LOL) type of read head first and second insulation layers are employed with the first insulation layer being located between a top surface of a first hard bias layer and a first lead layer and the second insulation layer is located between the top... | 02/05/2008 |
| 7317596 | Magnetic recording disk drive having read head with high cross-track resolution and disk with low bit-aspect-ratio A continuous-media or patterned-media disk drive with a low ratio of linear bit density in bits per inch (BPI) in the along-the-track direction to track density in tracks per inch (TPI) in the cross-track direction has a magnetoresistive read head with high cross-tr... | 01/08/2008 |
| 7312961 | Magnetic head and method of manufacturing same, head suspension assembly and magnetic disk apparatus A magnetic head has less variations in the resistance of a magneto-resistive device before and after the magnetic head is left in a high temperature environment so as to have higher stability of the characteristics of the magnetic head against a high temperature env... | 12/25/2007 |
| 7312957 | Current-perpendicular-to-the-plane structure magnetoresistive element having sufficient sensitivity A current-perpendicular-to-the-plane (CPP) structure magnetoresistive element includes an electrode layer contacting a magnetoresistive film. A low resistance region is defined to extend rearward along the boundary of the magnetoresistive film from the front end exp... | 12/25/2007 |
| 7308751 | Magnetic head and method of manufacturing same, head suspension assembly and magnetic disk apparatus A magnetic head has less variations in the resistance of a magneto-resistive device before and after the magnetic head is left in a high temperature environment so as to have higher stability of the characteristics of the magnetic head against a high temperature env... | 12/18/2007 |
