Patent application number | Description | Published |
20090052095 | Magnetic recording head and magnetic recording apparatus - A magnetic recording head includes: | 02-26-2009 |
20100091412 | Method for manufacturing a magneto-resistance effect element and magnetic recording and reproducing apparatus - A method for manufacturing a magneto-resistance effect element is provided. The magneto-resistance effect element includes a first magnetic layer including a ferromagnetic material, a second magnetic layer including a ferromagnetic material and a spacer layer provided between the first magnetic layer and the second magnetic layer, the spacer layer having an insulating layer and a conductive portion penetrating through the insulating layer. The method includes: forming a film to be a base material of the spacer layer; performing a first treatment using a gas including at least one of oxygen molecules, oxygen atoms, oxygen ions, oxygen plasma and oxygen radicals on the film; and performing a second treatment using a gas including at least one of helium ions, helium plasma, helium radicals, neon ions, neon plasma and neon radicals on the film submitted to the first treatment. | 04-15-2010 |
20100091414 | Method for manufacturing a magneto-resistance effect element and magnetic recording and reproducing apparatus - A method for manufacturing a magneto-resistance effect element is provided. The magneto-resistance effect element includes a first magnetic layer including a ferromagnetic material, a second magnetic layer including a ferromagnetic material and a spacer layer provided between the first magnetic layer and the second magnetic layer, the spacer layer having an insulating layer and a conductive portion penetrating through the insulating layer. The method includes: forming a film to be a base material of the spacer layer; performing a first treatment using a gas including at least one of oxygen molecules, oxygen atoms, oxygen ions, oxygen plasma and oxygen radicals on the film; and performing a second treatment using a gas including at least one of krypton ions, krypton plasma, krypton radicals, xenon ions, xenon plasma and xenon radicals on the film submitted to the first treatment. | 04-15-2010 |
20100091415 | Method for manufacturing a magneto-resistance effect element and magnetic recording and reproducing apparatus - A method for manufacturing a magneto-resistance effect element is provided. The magneto-resistance effect element includes a first magnetic layer including a ferromagnetic material, a second magnetic layer including a ferromagnetic material and a spacer layer provided between the first magnetic layer and the second magnetic layer, the spacer layer having an insulating layer and a conductive portion penetrating through the insulating layer. The method includes: forming a film to be a base material of the spacer layer; performing a first treatment using a gas including at least one of oxygen molecules, oxygen atoms, oxygen ions, oxygen plasma and oxygen radicals on the film; and performing a second treatment using a gas including at least one of nitrogen ions, nitrogen atoms, nitrogen plasma, and nitrogen radicals on the film submitted to the first treatment. | 04-15-2010 |
20100092803 | Method for manufacturing a magneto-resistance effect element and magnetic recording and reproducing apparatus - A method for manufacturing a magneto-resistance effect element is provided. The magneto-resistance effect element includes a first magnetic layer including a ferromagnetic material, a second magnetic layer including a ferromagnetic material and a spacer layer provided between the first magnetic layer and the second magnetic layer, the spacer layer having an insulating layer and a conductive portion penetrating through the insulating layer. The method includes: forming a film to be a base material of the spacer layer; performing a first treatment using a gas including at least one of oxygen molecules, oxygen atoms, oxygen ions, oxygen plasma and oxygen radicals on the film; and performing a second treatment using a gas including at least one of hydrogen molecules, hydrogen atoms, hydrogen ions, hydrogen plasma, hydrogen radicals, deuterium molecules, deuterium atoms, deuterium ions, deuterium plasma and deuterium radicals on the film submitted to the first treatment. | 04-15-2010 |
20100220415 | MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING APPARATUS - A magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes are operable to pass a current through the laminated body. | 09-02-2010 |
20110205669 | METHOD FOR MANUFACTURING MAGNETO-RESISTANCE EFFECT ELEMENT, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - According to one embodiment, a method for manufacturing a magneto-resistance effect element is disclosed. The element has first and second magnetic layers, and an intermediate layer provided between the first and second magnetic layers. The intermediate layer has an insulating layer and a conductive portion penetrating through the insulating layer. The method can include forming a structure body having the insulating layer and the conductive portion, performing a first treatment including irradiating the structure body with at least one of ion including at least one selected from the group consisting of argon, xenon, helium, neon and krypton and a plasma including at least one selected from the group, and performing a second treatment including at least one of exposure to gas containing oxygen or nitrogen, irradiation of ion beam containing oxygen or nitrogen, irradiation of plasma containing oxygen or nitrogen, to the structure body submitted to the first treatment. | 08-25-2011 |
20110228427 | MAGNETORESISTIVE ELEMENT, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/REPRODUCING APPARATUS - A magnetoresistive element includes a first ferromagnetic layer, a second ferromagnetic layer, a nonmagnetic layer, a first metal layer, a second metal layer, a first electrode, and a second electrode. The nonmagnetic layer is provided between the first ferromagnetic layer and the second ferromagnetic layer. The first metal layer includes Au and is provided so that the first ferromagnetic layer is sandwiched between the nonmagnetic layer and the first metal layer. The second metal layer includes a CuNi alloy, and is provided so that the first metal layer is sandwiched between the first ferromagnetic layer and the second metal layer. In addition, magnetization of either one of the first ferromagnetic layer and the second ferromagnetic layer is fixed in a direction. Magnetization of the other is variable in response to an external field. At least one of the first ferromagnetic layer and the second ferromagnetic layer includes a half metal. | 09-22-2011 |
20110261478 | MAGNETORESISTIVE ELEMENT AND MAGNETIC RECORDING APPARATUS - According to one embodiment, a magnetoresistive element includes a stack and a pair of electrodes that allows electric current to flow through the stack in a direction perpendicular to a surface of the stack. The stack includes a cap layer, a magnetization pinned layer, a magnetization free layer provided between the cap layer and the magnetization pinned layer, a tunneling insulator provided between the magnetization pinned layer and the magnetization free layer, and a functional layer provided within the magnetization pinned layer, between the magnetization pinned layer and the tunneling insulator, between the tunneling insulator and the magnetization free layer, within the magnetization free layer, or between the magnetization free layer and the cap layer. The functional layer includes an oxide including at least one element selected from Zn, In, Sn and Cd and at least one element selected from Fe, Co and Ni. | 10-27-2011 |
20110295128 | BLOOD-PRESSURE SENSOR - A blood-pressure sensor includes a substrate, a first electrode, a magnetization fixed layer, a nonmagnetic layer, a magnetization free layer, and a second electrode. The substrate is bent to generate a tensile stress at least in a first direction. The first electrode is provided on the substrate. The magnetization fixed layer has magnetization to be fixed in a second direction, and is provided on the substrate. The nonmagnetic layer is provided on the magnetization fixed layer. The magnetization free layer has a magnetization direction which is different from the first direction and from a direction perpendicular to the first direction. The second electrode is provided on the magnetization free layer. | 12-01-2011 |
20110299192 | MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING APPARATUS - An example magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes is operable to pass a current through the laminated body. | 12-08-2011 |
20110300409 | MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING APPARATUS - An example magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes is operable to pass a current through the laminated body. | 12-08-2011 |
20120079887 | STRAIN SENSOR ELEMENT AND BLOOD PRESSURE SENSOR - A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor. | 04-05-2012 |
20120206837 | MAGNETORESISTIVE ELEMENT, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/REPRODUCING APPARATUS - A magnetoresistive element includes a lamination body and a pair of electrodes. The lamination body includes a first magnetic layer, a second magnetic layer, and a spacer layer. The spacer layer is provided between the first magnetic layer and the second magnetic layer and includes an oxide layer. The oxide layer includes at least one element selected from the group consisting of Zn, In, Sn, and Cd, and at least one element selected from the group consisting of Fe, Co, and Ni. | 08-16-2012 |
20120212857 | MAGNETO-RESISTIVE EFFECT DEVICE, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING DEVICE - According to one embodiment, a magneto-resistive effect device includes a stacked body, a pair of electrodes for supplying current in a stacking direction of the stacked body. The stacked body includes a first magnetic layer, a second magnetic layer, and a spacer layer disposed between the first magnetic layer and the second magnetic layer. At least one of the first magnetic layer, the second magnetic layer, and the spacer layer includes an oxide layer formed from a metal oxide. A crystalline structure of the metal oxide is a NaCl structure. | 08-23-2012 |
20120268844 | MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING APPARATUS - An example magnetic writing head includes a main magnetic pole, a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field, and a laminated body. The laminated body includes a first magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole and a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole. | 10-25-2012 |
20130063840 | MAGNETIC HEAD AND MAGNETIC RECORDING AND REPRODUCING DEVICE - According to one embodiment, a magnetic head has a main magnetic pole, a write-shield constituting the main magnetic pole and a magnetic circuit, and a spin torque oscillation element provided between the main magnetic pole and the write-shield. The spin torque oscillation element is provided with a first oscillation layer, a nonmagnetic spin sink layer, a second oscillation layer, a nonmagnetic intermediate layer, and a spin injection layer provided in sequence from the write-shield side to the main magnetic pole side. The nonmagnetic spin sink layer is formed of at least one element selected from the group consisting of Ru, Rh, Ta, W, Cr, Ir, Mo, Re, Nb, Pt, and Pd. | 03-14-2013 |
20130148242 | MAGNETIC RECORDING HEAD AND DISK DRIVE WITH THE SAME - According to one embodiment, a magnetic recording head includes a spin-torque oscillator between a main pole and a trailing shield. An oscillation layer of the spin-torque oscillator is formed by repeatedly stacking two or more laminates each including a metallic magnetic layer of a body-centered cubic crystalline metal and a metallic magnetic layer containing cobalt. The film thickness of each metallic magnetic layer is more than 0.2 nm and not more than 3 nm. The intensity of an anisotropic magnetic field is higher than a value obtained by subtracting the intensity of a gap magnetic field from the intensity of a diamagnetic field and lower than the intensity of the diamagnetic field. | 06-13-2013 |
20130314820 | MAGNETIC RECORDING HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/ REPRODUCTION APPARATUS - According to one embodiment, a magnetic recording head includes a main magnetic pole, an auxiliary magnetic pole, and a spin torque oscillator formed between them. The spin torque oscillator includes a main oscillation layer and spin sink layer as an oscillation layer. The spin sink layer contains one of iron and cobalt, and at least one element selected from the group consisting of platinum, palladium, ruthenium, tantalum, chromium, terbium, gadolinium, europium, dysprosium, and samarium. | 11-28-2013 |
20130329317 | Magnetic Recording Head and Magnetic Recording Apparatus - An example magnetic writing head includes a main magnetic pole and a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field. The laminated body includes a first magnetic layer, and a second magnetic layer. | 12-12-2013 |
20140146420 | MAGNETIC HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/REPRODUCTION APPARATUS - According to one embodiment, a magnetic head includes a spin torque oscillator formed between a main magnetic pole and auxiliary magnetic pole. The spin torque oscillator includes a transmission-type spin transfer layer, first interlayer, oscillation layer, second interlayer, and reflection-type spin transfer layer. The transmission-type spin transfer layer includes a first perpendicular magnetization film and first interface magnetic layer. The first interface magnetic layer contains at least one element selected from Fe, Co, and Ni, and at least one element selected from Cr, V, Mn, Ti, and Sc. The reflection-type spin transfer layer includes a second perpendicular magnetization film. | 05-29-2014 |
20140153139 | METHOD OF MANUFACTURING MAGNETORESISTIVE ELEMENT - According to one embodiment, a method of manufacturing a magnetoresistive element includes a layered structure and a pair of electrodes, the layered structure including a cap layer, a magnetization pinned layer, a magnetization free layer, a spacer layer and a functional layer provided in the magnetization pinned layer, between the magnetization pinned layer and the spacer layer, between the spacer layer and the magnetization free layer, in the magnetization free layer, or between the magnetization free layer and the cap layer and including an oxide, the method including forming a film including a base material of the functional layer, performing an oxidation treatment on the film using a gas containing oxygen in a form of at least one selected from the group consisting of molecule, ion, plasma and radical, and performing a reduction treatment using a reducing gas on the film after the oxidation treatment. | 06-05-2014 |
20140160598 | MAGNETIC HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING-REPRODUCING DEVICE - A magnetic head includes a main magnetic pole, a trailing shield that forms a magnetic circuit with the main magnetic pole, a spin torque oscillator that is provided between the main magnetic pole and the trailing shield, a first cooling layer that partially has a Heusler structure, and a second cooling layer that is provided on the first cooling layer and mainly comprised of silver. The first cooling layer and the second cooling layer are provided either between the main magnetic pole and spin torque oscillator or between the trailing shield and the spin torque oscillator, with either of the two cooling layers being disposed closer to the spin torque oscillator. A third cooling layer may be formed to be in contact with the first cooling layer. | 06-12-2014 |
20140177101 | MAGNETIC HEAD AND MAGNETIC RECORDING/REPRODUCTION APPARATUS - According to one embodiment, an oscillation layer of a spin torque oscillator for use in a magnetic head includes a stack of first and second metal films. The first metal film is formed by repetitively stacking a combination of first and second magnetic layers twice or more. The thickness of the first metal film is 0.4 to 5.0 nm. The first magnetic layer has a bcc structure and contains Fe. The second magnetic layer contains Co. The second metal film is made of Cu. | 06-26-2014 |
20140207006 | STRAIN SENSOR ELEMENT AND BLOOD PRESSURE SENSOR - A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor. | 07-24-2014 |
20140207007 | STRAIN SENSOR ELEMENT AND BLOOD PRESSURE SENSOR - A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor. | 07-24-2014 |
20140211338 | MAGNETORESISTIVE MAGNETIC HEAD AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - A magnetic head according to an embodiment includes a first magnetic shield and a second magnetic shield that are opposed to each other, and a magnetoresistive film arranged between the first magnetic shield and the second magnetic shield, and including a first magnetic layer including a first metal layer that contains 90 at. % or more of Fe and a first Heusler alloy layer, a second magnetic layer arranged on a side of the first Heusler alloy layer opposite from the first magnetic layer, and an intermediate layer arranged between the first Heusler alloy layer and the second magnetic layer. | 07-31-2014 |
20140233135 | MAGNETORESISTANCE EFFECT ELEMENT, MAGNETIC HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING AND REPRODUCING DEVICE - According to one embodiment, a magnetoresistance effect element includes first and second shields, a stacked body and a hard bias unit. The stacked body includes first and second magnetic layers, an intermediate layer and a first Ru layer. A magnetization of the first magnetic layer is changeable. A magnetization of the second magnetic layer is changeable. The intermediate layer is nonmagnetic. The first Ru layer is provided between the first shield and the first magnetic layer. A thickness of the first Ru layer is not less than 1.5 nanometers and not more than 2.5 nanometers. The hard bias unit is provided between the first shield and the second shield. A first direction from the first shield toward the second shield intersects a second direction from the stacked body toward the hard bias unit. | 08-21-2014 |
20140236028 | BLOOD-PRESSURE SENSOR - A blood-pressure sensor includes a substrate, a first electrode, a magnetization fixed layer, a nonmagnetic layer, a magnetization free layer, and a second electrode. The substrate is bent to generate a tensile stress at least in a first direction. The first electrode is provided on the substrate. The magnetization fixed layer has magnetization to be fixed in a second direction, and is provided on the substrate. The nonmagnetic layer is provided on the magnetization fixed layer. The magnetization free layer has a magnetization direction which is different from the first direction and from a direction perpendicular to the first direction. The second electrode is provided on the magnetization free layer. | 08-21-2014 |
20140300996 | MAGNETORESISTANCE EFFECT ELEMENT, MAGNETIC HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING AND REPRODUCING DEVICE - According to one embodiment, a magnetoresistance effect element includes a first shield, a second shield, a stacked unit, and a hard bias unit. The stacked unit includes a first magnetic layer provided between the first shield and the second shield, a second magnetic layer provided between the first magnetic layer and the second shield, and an intermediate layer provided between the and second magnetic layers. The hard bias unit is provided between the first shield and the second shield to be arranged with the stacked unit. A crystal orientation plane of the first magnetic layer in a film surface perpendicular direction is a cubic (110) plane. The first magnetic layer includes a first stacked body including a first Fe layer and a first Co layer stacked along the first direction, and a first Heusler alloy layer stacked with the first stacked body along the first direction. | 10-09-2014 |
20140334029 | MAGNETORESISTIVE ELEMENT, MAGNETIC HEAD, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - A magnetoresistive element according to an embodiment includes: a magnetoresistance effect film including: a first and second magnetic films; and an intermediate film disposed between the first and second magnetic films, at least one of the first and second magnetic films being formed of a Heusler alloy expressed as Co | 11-13-2014 |
20140334041 | MAGNETORESISTIVE ELEMENT, MAGNETIC HEAD, MAGNETIC RECORDING AND REPRODUCING APPARATUS, AND METHOD OF MANUFACTURING MAGNETORESISTIVE ELEMENT - A magnetoresistive element according to an embodiment includes: a magnetoresistance effect film including: a first magnetic film; a second magnetic film; and an intermediate film of a nonmagnetic material disposed between the first magnetic film and the second magnetic film, at least one of the first magnetic film and the second magnetic film being formed of a material expressed as A | 11-13-2014 |
20140362477 | MAGNETO-RESISTANCE EFFECT DEVICE, AND MAGNETIC RECORDER - According to one embodiment, a magneto-resistance effect device includes: a multilayer structure having a cap layer; a magnetization pinned layer; a magnetization free layer provided between the cap layer and the magnetization pinned layer; a spacer layer provided between the magnetization pinned layer and the magnetization free layer; a function layer which is provided in the magnetization pinned layer, between the magnetization pinned layer and the spacer layer, between the spacer layer and the magnetization free layer, in the magnetization free layer, or between the magnetization free layer and the cap layer, the function layer having oxide containing at least one element selected from Zn, In, Sn and Cd, and at least one element selected from Fe, Co and Ni; and a pair of electrodes for applying a current perpendicularly to a film plane of the multilayer structure. | 12-11-2014 |
20150162031 | MAGNETIC HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/REPRODUCTION APPARATUS - According to one embodiment, a magnetic head includes a spin torque oscillator formed between a main magnetic pole and auxiliary magnetic pole. The spin torque oscillator includes a transmission-type spin transfer layer, first interlayer, oscillation layer, second interlayer, and reflection-type spin transfer layer. The transmission-type spin transfer layer includes a first perpendicular magnetization film and first interface magnetic layer. The first interface magnetic layer contains at least one element selected from Fe, Co, and Ni, and at least one element selected from Cr, V, Mn, Ti, and Sc. The reflection-type spin transfer layer includes a second perpendicular magnetization film. | 06-11-2015 |
20150162032 | MAGNETIC HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/REPRODUCTION APPARATUS - According to one embodiment, a magnetic head includes a spin torque oscillator formed between a main magnetic pole and auxiliary magnetic pole. The spin torque oscillator includes a transmission-type spin transfer layer, first interlayer, oscillation layer, second interlayer, and reflection-type spin transfer layer. The transmission-type spin transfer layer includes a first perpendicular magnetization film and first interface magnetic layer. The first interface magnetic layer contains at least one element selected from Fe, Co, and Ni, and at least one element selected from Cr, V, Mn, Ti, and Sc. The reflection-type spin transfer layer includes a second perpendicular magnetization film. | 06-11-2015 |
20150338292 | STRAIN SENSOR ELEMENT AND BLOOD PRESSURE SENSOR - A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor. | 11-26-2015 |