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7352540 Giant magneto-resistive (GMR) transducer having separation structure separating GMR sensor from head-tape interface  
A giant magneto-resistive (GMR) transducer for reading data signals magnetically recorded on tape includes a GMR sensor and a separation structure formed on a front edge of the GMR sensor. The GMR...
7327539 CPP giant magnetoresistive head with large-area metal film provided between shield and element  
A CPP giant magnetoresistive (GMR) head includes lower and upper shield layers; and a GMR element disposed between the upper and lower shield layers and comprising a pinned magnetic layer, a free...
7280320 Thin-film magnetic head and manufacturing method thereof  
A lower shield layer is formed by being embedded in a first recess formed in an under layer. Accordingly, the distance between the lower shield layer and a slider can be reduced. Also, a second...
7274540 Magnetoresistive head having an MR element between a pair of shields and including first and second underlayers  
A magnetoresistive device includes a first shield layer and a second shield layer disposed at a specific distance from each other, an MR element disposed between the first and second shield layer,...
7237322 Method for making a tunnel valve head with a flux guide  
A method for making a tunnel valve head with a flux guide. The tunnel valve sensor is created by forming a tunnel valve at a first shield layer. The tunnel valve includes a free layer distal to the...
7170721 Method of producing flux guides in magnetic recording heads  
A flux guide protected magnetoresistive sensor in a tape drive read/write head is presented. The magnetoresistive sensor has a tape bearing surface, and includes a magnetoresistive sensing element...
7092218 Magnetic head comprising magnetic domain control layer formed on ABS-side of magnetic flux guide for GMR element and method of manufacturing the magnetic head  
The present invention provides a magnetic head including a magnetic flux guide layer for effectively inducing an external magnetic field in a free magnetic layer. A magnetic domain control layer is...
7068475 Magnetic head having a flux-guide regulating film regulating a magnetic domain of a flux guide  
A magnetic head is provided. The magnetic head comprises a magnetoresistance film, a flux guide, and a flux-guide regulating film. The flux guide guides a signal magnetic field from a magnetic...
7057864 Method and apparatus for achieving physical connection between the flux guide and the free layer and that insulates the flux guide from the shields  
A method for making a tunnel valve head with a flux guide, a tunnel valve sensor having an isolated flux guide, and a magnetic storage system using a tunnel valve sensor having an isolated flux...
7036208 Self aligned magnetoresistive flux guide read head with exchange bias underneath free layer  
A magnetoresistive sensor for use in a data storage device has a recessed sensing element (magnetic tunnel junction, CPP spin valve, etc.) with an exchange biased sensing ferromagnetic (free)...
7026671 Magnetoresistive effect element, magnetic memory device and manufacturing method of magnetoresistive effect element and magnetic memory device  
A magnetoresistive effect element ( 1 ) has an arrangement in which a pair of ferromagnetic material layers (magnetization fixed layer ( 5 ) and magnetization free layer ( 7 )) is opposed to each...
7012790 Magnetic head with yoke and multiple magnetic layers  
The present invention provides a magnetic head having improved characteristics, using a magnetoresistive device in which current flows across the film plane such as a TMR device. In a first...
6977799 Magnetic head comprising a multilayer magnetoresistive device and a yoke for introducing magnetic flux from a medium to the magnetoresistive device  
The present invention provides a magnetic head having improved characteristics, using a magnetoresistive device in which current flows across the film plane such as a TMR device. In a first...
6961222 Flux guide type device, head having the same, and drive  
A flux guide type includes a magnetoresistive device for reading a signal flux, and a flux guide for transmitting the signal flux to the magnetoresistive device. The flux guide includes a laminated...
6944937 Method of reducing ESD damage in thin film read heads which enables measurement of gap resistance  
The present invention provides a method of manufacturing a magnetoresistive read head which reduces electrostatic discharge and allows measurement of gap resistances in the head.
6940700 Magnetic head and magnetic reproducing apparatus  
In a magnetic head having magnetic yoke layers, each magnetic yoke layer includes a yoke projecting portion ( 2 A) projected toward a recording medium, and yoke setback portions ( 2 B) set back...
6888705 High linear density tunnel junction flux guide read head with in-stack longitudinal bias stack (LBS)  
Several embodiments of a sense current perpendicular to the planes of the sensor (CPP) and flux guide type of read head has a gap between first and second shield layers at an air bearing surface...
6873499 Read head having high resistance soft magnetic flux guide layer for enhancing read sensor efficiency  
A read head has a flux guide layer that is immediately adjacent (abuts) the back edge of a read sensor. The flux guide layer is made of a high resistance soft magnetic material that conducts...
6850393 Magnetic head including a magneto resistive film connected to a yoke portion  
In a yoke type reproducing magnetic head, a magnetoresistance effect film can be arranged in the vicinity of a medium facing surface, so that sensitivity is improved. The yoke type reproducing...
6829819 Method of forming a magnetoresistive device  
A magnetoresistive device having a first pole, a second pole, and a first tapered pole pedestal therebetween and magnetically connected to the second pole. The first tapered pole has a width that...
6804089 Yoke-type magnetic head and magnetic recording/reproducing device  
The objective of this invention is to provide a yoke-type magnetic head and a magnetic recording device in which Barkhausen noise is low. It is possible to induce a magnetic flux efficiently within...
6801410 Side flux guide for current perpendicular to plane magnetoresistive transducer  
A transducing head according to the present invention includes a pair of electrodes, a pair of biasing elements and a magnetoresistive sensor. The magnetoresistive sensor is positioned between the...
6798620 Magneto-resistive element, magnetic head, and magnetic recording and reproduction apparatus  
A magnetic head including a magnetic substrate for operating as a first electrode, a multi-layer film formed on a portion of the surface of the magnetic substrate an inter-layer insulating layer...
6792670 Method of manufacturing a magnetoresistive element substructure  
A method is provided for manufacturing a magnetoresistive device substructure. The substructure includes: a TMR element; a bias field inducing layer that covers the TMR element; and a front flux...
6785100 Magnetic head comprising a multilayer magnetoresistive device and a yoke for introducing magnetic flux from a medium to the magnetoresistive device  
The present invention provides a magnetic head having improved characteristics, using a magnetoresistive device in which current flows across the film plane such as a TMR device. In a first...
6757144 Flux guide read head with in stack biased current perpendicular to the planes (CPP) sensor  
Various embodiments of a read head employ a bias stack which is in a sensor stack of the read head. The bias stack includes a biasing layer and is separated from a free layer in the sensor by a...
6741431 Magnetic head and magnetic recording/reproduction device  
The objective of this invention is to provide a yoke-type magnetic head and a magnetic recording device in which Barkhausen noise is low. It is possible to induce a magnetic flux efficiently within...
6728081 Magnetic head and magnetic disk apparatus  
The invention provides a magnetoresistive effect sensor that is a yoke type magnetoresistive effect sensor having a tunnel magnetoresistive effect film, which is operated stably with suppressed...
6728080 Magnetic head, magnetic recording and reproducing apparatus, method for reproducing and recording magnetic recording information  
A magnetic reproducing head and a magnetic recording head. The magnetic reproducing head includes a GMR or TMR magnetic sensor, and a flux guide for introducing a magnetic flux into the magnetic...
6721139 Tunnel valve sensor with narrow gap flux guide employing a lamination of FeN and NiFeMo  
A tunnel valve sensor has a flux guide which has at least one iron nitride (FeN) layer and preferably a lamination of iron nitride (FeN) and nickel iron molybdenum (NiFeMo) layers wherein in the...
6690526 Magnetic head, magnetic recording and reproducing apparatus, method for reproducing and recording magnetic recording information  
A magnetic recording and reproducing head which includes a magnetic sensor, and a flux guide for introducing a magnetic flux into the magnetic sensor. At least a portion of the flux guide is...
6680830 Tunnel valve sensor and flux guide with improved flux transfer therebetween  
A tunnel valve sensor and flux guide has improved flux transfer therebetween by providing a magnetic oxide insulation layer which is located between and interfaces a back surface of the flux guide...
6680827 Dual spin valve CPP MR with flux guide between free layers thereof  
A current perpendicular-to-the-plane magnetoresistance (CPP-MR) device includes a first magnetic shield, a second magnetic shield, and a spin valve structure. The first and second magnetic shields...
6678126 Magnetoresistance-effect magnetic head  
The part of an MR element 25 which lies close to a medium-facing surface 10 a overlaps that part of a flux-guiding element 24 which lies remote from the medium-facing surface 10 a , with a...
6671136 Magnetic head and magnetic disk apparatus  
The invention provides a magnetoresistive effect sensor that is a yoke type magnetoresistive effect sensor having a tunnel magnetoresistive effect film, which is operated stably with suppressed...
6665152 Magnetic head that detects leakage fluxes from a medium at a high resolution and leads the fluxes into a magneto-resistive element  
Magnetic heads capable of recording and reading with high sensitivity and resolution are provided by minimizing the outflow of magnetic fluxes from a flux guide to magnetic shields while using a...
6657825 Self aligned magnetoresistive flux guide read head with exchange bias underneath free layer  
A magnetoresistive sensor for use in a data storage device has a recessed sensing element (magnetic tunnel junction, CPP spin valve, etc.) with an exchange biased sensing ferromagnetic (free)...
6636391 Magnetoresistive sensor, magnetic head and magnetic disk apparatus  
A magnetoresistive sensor employing a magnetoresistive sensor film of a GMR film or a TMR film and a magnetic flux guide to ensure high sensitivity and high stability. Magnetization of a magnetic...
6631055 Tunnel valve flux guide structure formed by oxidation of pinned layer  
A flux guided magnetic tunnel junction head includes a ferromagnetic pinned layer having an active region with a front edge recessed from a sensing surface, and a non-active region located between...
6629357 Method of magnetic head manufacture  
A magnetic head manufacturing method. In one embodiment, a wafer including magnetic head devices formed on the surface thereof are cut out into individual sliders. Photoresist is applied on the air...
6624988 Tunnel junction sensor with antiparallel (AP) coupled flux guide  
A read head, which can be submicron, has an antiparallel (AP) coupled flux guide which is located at an air bearing surface and guides field signals from a rotating magnetic disk to a tunnel...
6606225 Yoke-type magnetic head and device having a granular structure in which a non-magnetic and electrical insulating material surrounds magnetic particles  
The objective of this invention is to provide a yoke-type magnetic head and a magnetic recording device in which Barkhausen noise is low. It is possible to induce a magnetic flux efficiently within...
6597546 Tunnel junction sensor with an antiferromagnetic (AFM) coupled flux guide  
A magnetic read head includes a tunnel junction sensor that has front and back surfaces that are recessed from the ABS and a flux guide that includes a ferromagnetic flux guide body with front and...
6583967 Thin-film magnetic head and method of manufacturing same  
A thin-film magnetic head includes: a TMR element; a lower electrode layer and an upper electrode layer for feeding a current used for signal detection to the TMR element; and an insulating layer...
6552882 Information reproduction head apparatus and information recording/reproduction system  
The present invention provides a yoke-type information reproduction head apparatus 100 having a magnetic sensor block 3 provided on the substrate 1 via a non-magnetic insulation layer 2. ...
6538855 Magneto-resistive thin film magnetic head preventing entry of unnecessary magnetic flux and having good reproduction characteristics  
A magneto-resistive thin film magnetic head is provided, which magnetic head includes: a base; a first yoke provided on the base and separated by a gap into first and second portions, the first...
6519124 Magnetic tunnel junction read head using a hybrid, low-magnetization flux guide  
The present invention relates to a magneto-resistive tunnel junction read head having a multi-layer tunnel junction composed of a tunnel barrier layer sandwiched between a ferromagnetic free layer...
6486662 Magnetic field sensor comprising a spin-tunnel junction  
A magnetic field sensor comprises a transducer element, which: transducer element is a Spin Tunnel Junction, comprising a first and second magnetic layer which are sandwiched about an interposed...
6419552 Thin-film magnetic head manufacturing method and apparatus  
In a thin-film magnetic head manufacturing method and apparatus, lapping is continued until the MR height of a magnetoresistive sensor falls into a finish tolerance range and the lapping time from...
6388846 Magnetic field sensor with magnetoresistor  
According to the invention, the magnetoresistance ( 25 ) is coupled to a secondary air gap ( 15 ) formed by two hollowed out magnetic parts ( 12 - 1, 12 - 2 ). Applicable to the measurement of...
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