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| Number | Title | Issue Date |
| 8176622 | Process for manufacturing a magnetic tunnel junction (MTJ) device A process for manufacturing a high performance MTJ it is described: A first cap layer of NiFeHf is deposited on the free layer, followed by a second cap layer of Ru on Ta. The device is then heated so that oxygen trapped in the free layer diffuses into the NiFeHf la... | 05/15/2012 |
| 8166631 | Method for fabricating a magnetic recording transducer having side shields A method provides a magnetic transducer that includes an underlayer and a nonmagnetic layer on the underlayer. The method includes providing a plurality of trenches in the nonmagnetic layer. A first trench of corresponds to a main pole, while at least one side trenc... | 05/01/2012 |
| 8161627 | Method of making a write head lapping guide about aligned to a non-magnetic layer surrounding a write pole A method in one embodiment includes forming an electric lapping guide layer; forming a write pole; forming a first gap layer over the write pole; masking a portion of the first gap layer for defining a window over the write pole and at least a portion of the electri... | 04/24/2012 |
| 8108985 | Method for manufacturing a perpendicular magnetic write head A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method includes forming a write pole, and then depositing a refill layer. A mask structure can be formed over the writ pole and refill layer, the mask structure being configur... | 02/07/2012 |
| 8091209 | Magnetic sensing device including a sense enhancing layer A magnetic sensor includes a sensor stack having a first magnetic portion, a second magnetic portion, and a barrier layer between the first magnetic portion and the second magnetic portion. The first magnetic portion and/or the second magnetic portion comprises a mu... | 01/10/2012 |
| 8064161 | Perpendicular magnetic recording head and method for manufacturing the same Embodiments of the present invention help to provide a perpendicular magnetic recording head capable of writing a signal in a track having a small width. According to one embodiment, a perpendicular magnetic recording head includes an auxiliary pole, a main pole, a ... | 11/22/2011 |
| 8028399 | Magnetic write pole fabrication Write elements and methods of fabricating magnetic write poles are described. For one method, a vertical mask structure is formed on a magnetic layer in locations of a pole tip and a yoke of a write pole. The vertical mask structure may be formed by coating vertical... | 10/04/2011 |
| 8015692 | Method for providing a perpendicular magnetic recording (PMR) head A method for providing a perpendicular magnetic recording head includes providing a metal underlayer and forming a trench in the metal underlayer. The trench has a bottom and a top wider than the bottom. The method also includes providing a PMR pole. At least a port... | 09/13/2011 |
| 7874062 | Methods for defining the track width of magnetic head having a flat sensor profile A method of making a magnetic head according to one embodiment comprises forming a shield layer having first and second recesses in first and second end regions which surround a central region; depositing first and second lead layers in the first and the second rece... | 01/25/2011 |
| 7770282 | Method of making a magnetic sensing device having an insulator structure A magnetic sensing device for use in a magnetic head includes a sensor stack structure having a sensing layer structure and an insulator structure formed adjacent the sensing layer structure. The insulator structure includes a plurality of oxidized metallic sublayer... | 08/10/2010 |
| 7703194 | Method for creating write element having high magnetic moment Co-Fe-O-N film with soft magnetic properties A method for creating a write element of a magnetic head according to one embodiment includes forming a first pole pedestal; forming a write gap layer above the first pole pedestal; forming a second pole pedestal above the write gap layer; and forming at least one o... | 04/27/2010 |
| 7698807 | Method of manufacturing a magnetic sensor by multiple depositions of varying geometry Formation of the magnetic sensor layers of a magnetic sensor are separated into at least two depositions to reduce the dimension of the sensor. The free layer portion of the sensor is deposited at a different process step than the pinned layer portion. The top of th... | 04/20/2010 |
| 7634851 | Method of forming a magnetic random access memory element A method of forming a magnetic tunnel junction memory element and the resulting structure are disclosed. A magnetic tunnel junction memory element comprising a thick nonmagnetic layer between two ferromagnetic layers. The thick nonmagnetic layer has an opening in wh... | 12/22/2009 |
| 7621038 | Method for fabricating a three terminal magnetic sensor for magnetic heads with a semiconductor junction A method for fabricating a three terminal magnetic (TTM) sensor of a magnetic head according to one embodiment includes fabricating a P-type semiconductor material; fabricating an N-type semiconductor material at an upper surface of a portion of said P-type semicond... | 11/24/2009 |
| 7610674 | Method to form a current confining path of a CPP GMR device Concerns about inadequate electromigration robustness in CCP CPP GMR devices have been overcome by adding magnesium to the current confining structures that are presently in use. In one embodiment the alumina layer, in which the current carrying copper regions are e... | 11/03/2009 |
| 7574791 | Method to fabricate side shields for a magnetic sensor A method for fabricating magnetic side shields for an MR sensor of a magnetic head. Following the deposition of MR sensor layers, a first DLC layer is deposited. Milling mask layers are then deposited, and outer portions of the milling mask layers are removed such t... | 08/18/2009 |
| 7549215 | Method for manufacturing a magnetic head for perpendicular magnetic data recording A structure and method for performing magnetic inductance testing of write heads formed on a wafer. The structure and method allows for the effective inductive testing of magnetic write heads at wafer level even if the write heads have an inductance that is too low ... | 06/23/2009 |
| 7533456 | Fabrication process for magneto-resistive effect devices of the CPP structure A free layer functions such that a magnetization direction changes depending on an external magnetic field, and is made up of a multilayer structure including a first Heusler alloy layer, and a fixed magnetization layer takes a form wherein an inner pin layer and an... | 05/19/2009 |
| 7500302 | Process for fabricating a magnetic recording head with a laminated write gap Embodiments of the present invention recite a process for fabricating a write gap structure for a magnetic recording head. In one embodiment, at least one layer of inert material is deposited which is disposed proximate to the P2 pole of a magnetic recording ... | 03/10/2009 |
| 7441323 | Method of aligning components for installation on a head suspension assembly A head suspension for supporting a head slider over a storage media in a dynamic storage device is provided with a head suspension component having a spring metal layer, an electrically conductive layer and a dielectric layer interposed between the metal layer and t... | 10/28/2008 |
| 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 |
| 7443635 | Magnetic detector including antiferromagnetic layer, amorphous barrier layer, base layer, and hard layer arranged in that order and method for manufacturing magnetic detector A multilayer film is placed on a subatrate. The multilayer film includes an antiferromagnetic layer, a pinned magnetic layer, a non-magnetic material layer, and a free magnetic layer. The multilayer film has recessed sections arranged in both side regions thereof, t... | 10/28/2008 |
| 7433151 | Method of manufacturing magnetic head using magnetic head sub-structure with indicators for indicating the location of the ABS A method of manufacturing magnetic heads comprises the step of: fabricating a magnetic head substructure by forming a plurality of components of the magnetic heads on a single substrate, wherein a plurality of rows of pre-head portions that will be the respective ma... | 10/07/2008 |
| 7418777 | Method on manufacturing spin valve film A method of manufacturing a spin valve film, produces a large read out signal. After a completion of a film making process for forming a previous film of two films to be formed successively, but before an initiation of a film making process for forming a succeeding ... | 09/02/2008 |
| 7398592 | Manufacturable CMP assisted liftoff process to fabricate write pole for perpendicular recording heads This invention describes a manufacturable method, including a CMP liftoff process, for removing masking materials after ion milling for fabricating the write pole of a magnetic head. Significant parameters for the CMP assisted liftoff process include the thickness o... | 07/15/2008 |
| 7392578 | Thin film magnetic head and manufacturing method thereof A method for manufacturing a thin film magnetic head with a write element, the write element having a first yoke portion and a second yoke portion connected to each other by a back gap portion, a first pole portion and a second pole portion disposed in the medium-fa... | 07/01/2008 |
| 7392580 | Method for manufacturing a slider using electromagnetic wave A method for manufacturing sliders from a bar has: a radiating step which includes radiating an electromagnetic wave on at least a part of each space on a second surface of said bar, wherein said second surface is a back surface of a first surface of said bar, said ... | 07/01/2008 |
| 7389577 | Method to fabricate an ESD resistant tunneling magnetoresistive read transducer A method to fabricate a tunneling magnetoresistive (TMR) read transducer is disclosed. An insulative layer is deposited on a wafer substrate, and a bottom lead is deposited over the insulative layer. A laminated TMR layer, having a plurality of laminates, is deposit... | 06/24/2008 |
| 7386933 | Method of fabricating thin film write heads with a shortened yoke and improved dimension control A method for fabricating a magnetic recording head writer. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer includin... | 06/17/2008 |
| 7383626 | Methods for fabricating giant magnetoresistive (GMR) devices In a method of fabricating a giant magnetoresistive (GMR) device a plurality of magnetoresistive device layers is deposited on a first silicon nitride layer formed on a silicon oxide layer. An etch stop is formed on the magnetoresistive device layers, and a second l... | 06/10/2008 |
| 7377025 | Method of forming an improved AP1 layer for a TMR device A TMR read head with improved voltage breakdown is formed by laying down the AP1 layer as two or more layers. Each AP1 sub-layer is exposed to a low energy plasma for a short time before the next layer is deposited. This results in a smooth surface, onto which to de... | 05/27/2008 |
| 7377024 | Method of making a magnetic write head with trailing shield throat pad A method of fabricating a magnetic transducer is described which uses a trailing shield throat pad to set the trailing shield throat height. The trailing shield throat pad is used as a part of the structural form over which the material for the trailing shield is fo... | 05/27/2008 |
| 7377026 | Method of making current-perpendicular-to-the-plane structure magnetoresistive element A magnetoresistive film is formed on the surface of a lower electrode layer in a method of making a current-perpendicular-to-the-plane structure magnetoresistive element. The magnetoresistive film includes a lower portion and an upper portion overlaid on the lower p... | 05/27/2008 |
| 7370404 | Method for resetting pinned layer magnetization in a magnetoresistive sensor A spin valve sensor in a read head has a spacer layer which is located between a self-pinned AP pinned layer structure and a free layer structure. The free layer structure is longitudinally stabilized by first and second hard bias layers which abut first and second ... | 05/13/2008 |
| 7370405 | Fabrication method of a high gradient-field recording head for perpendicular magnetic recording A thin film magnetic head for perpendicular recording of a single-pole type has a flux enhanced part and a flux enhanced end arranged on a leading side of the main pole in parallel with the cross track direction. The side surface of the main pole intersecting the cr... | 05/13/2008 |
| 7367110 | Method of fabricating a read head having shaped read sensor-biasing layer junctions using partial milling A method for fabricating a read head for a magnetic disk drive having a read head sensor and a hard bias layer, where the read head has a shaped junction between the read head sensor and the hard bias layer. The method includes providing a layered wafer stack to be ... | 05/06/2008 |
| 7367112 | Method of fabricating a head for perpendicular magnetic recording with a self-aligning side shield structure A method is provided for fabricating a head for perpendicular recording with self-aligning side shields. The voids where the side shields will be formed are milled into the layer of material for the pole tip to achieve self-alignment. A mask is patterned with openin... | 05/06/2008 |
| 7367111 | Method for producing a spin valve transistor with stabilization A method and structure for a spin valve transistor (SVT) comprises a magnetic field sensor, an insulating layer adjacent the magnetic field sensor, a bias layer adjacent the insulating layer, a non-magnetic layer adjacent the bias layer, and a ferromagnetic layer ov... | 05/06/2008 |
| 7368227 | Method to print photoresist lines with negative sidewalls It is very difficult to produce a negative wall angle from either negative or positive-tone chemically amplified resists, especially by e-beam lithography. This problem has now been overcome by first forming a photoresist pedestal in the conventional way, followed b... | 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 |
