Patent application number | Description | Published |
20120217962 | MAGNETIC SENSOR AND MANUFACTURING METHOD THEREFOR - A magnetic sensor having no sensitivity differences between sensitivity axes, and an easy manufacturing method therefor are provided. The method includes a process of forming first stacked films for a magnetoresistive element on a substrate. This element has a sensitivity axis in a certain direction and includes a self-pinned ferromagnetic pinned layer in which first and second ferromagnetic films are antiferromagnetically coupled through an antiparallel coupling layer, a nonmagnetic intermediate layer, and a soft magnetic free layer. The method further includes a process of removing a region of the first stacked films from the substrate. The remaining region of the films includes at least a region to be left to form the element. The method furthermore includes a process of forming second stacked films for a magnetoresistive element, which has a sensitivity axis in a direction different from the certain direction and has the same structure, on the exposed substrate. | 08-30-2012 |
20130009630 | MAGNETIC DETECTION DEVICE, MAGNETIC SENSOR INCLUDING THE SAME, AND METHOD FOR MANUFACTURING MAGNETIC DETECTION DEVICE - A magnetic detection device includes a layered film including a self-pinned magnetic layer, a free magnetic layer, a nonmagnetic material layer disposed between the pinned magnetic layer and the free magnetic layer, and a top capping layer. The pinned magnetic layer includes a first magnetic layer, a second magnetic layer, and a nonmagnetic intermediate layer disposed therebetween. A first magnetization of the first magnetic layer is pinned in antiparallel with a second magnetization of the second magnetic layer. The capping layer is formed of tantalum, and an as-deposited thickness of the capping layer is 55 Å or more. | 01-10-2013 |
20130257422 | MAGNETIC SENSOR AND METHOD FOR MANUFACTURING MAGNETIC SENSOR - A magnetic sensor of the present invention includes a magnetoresistive element having a sensitivity axis in a specified direction, the magnetoresistive element having a laminated structure including a ferromagnetic pinned layer having a pinned magnetization direction, a nonmagnetic intermediate layer, a free magnetic layer having a magnetization direction varying with an external magnetic field, and an antiferromagnetic layer which applies an exchange coupling magnetic field to the free magnetic layer. | 10-03-2013 |
Patent application number | Description | Published |
20080298415 | SEMICONDUCTOR DEVICE - A semiconductor device having high reliability, a long lifetime and superior light emitting characteristics by applying a novel material to a p-type cladding layer is provided. A semiconductor device includes a p-type semiconductor layer on an InP substrate, in which the p-type semiconductor layer has a laminate structure formed by alternately laminating a first semiconductor layer mainly including Be | 12-04-2008 |
20090059985 | EL SEMICONDUCTOR DEVICE - An n-type cladding layer structure which has good luminescence properties without the use of substances corresponding to RoHS Directive and a high Cl-doping efficiency, i.e. which facilitates the manufacture of a semiconductor optical element and device with low crystal defects and high reliability, and an active layer and a p-type cladding layer therefor are provided. The n-type layer being lattice matched to an InP substrate and containing Group II-VI compound as a main ingredient is a Group II-VI compound semiconductor, in which the Group II elements consist of Mg, Zn, and Be and the Group VI elements consist of Se and Te. The n-type layer of the present invention is characterized by a large energy gap, high energy of the bottom of a conduction band that is effective for suppress the Type II luminescence, high carrier concentration, and low crystal defects attributed to a good quality crystallinity. | 03-05-2009 |
20090092163 | LASER DIODE AND METHOD OF MANUFACTURING THE SAME - Provided is a laser diode which realizes NFP with a stable and uniform shape. The laser diode includes, on a semiconductor substrate, an active layer, one or a plurality of strip-shaped current confinement structures confining a current which is injected into the active layer, and a stacked structure including one or a plurality of strip-shaped convex portions extending in an extending direction of the current confinement structure. | 04-09-2009 |
20090137078 | Semiconductro laser device - This semiconductor laser device has the same structure as the conventional broad-area type semiconductor laser device, except that both side regions of light emission areas of active and clad layers are two-dimensional-photonic-crystallized. The two-dimensional photonic crystal formed on both side regions of the light emission area is the crystal having the property that 780 nm laser light cannot be wave-guided in a resonator direction parallel to a striped ridge within the region. The light traveling in the direction can exist only in the light emission area sandwiched between two photonic crystal regions, which results in the light laterally confined by the photonic crystal region. The optical confinement of the region suppresses the loss in the light at both edges of the stripe serving as the boundary of the optical confinement, which reduces the curve of wave surface and uniforms the light intensity distributions of NFP and FFP. | 05-28-2009 |
20090141763 | SEMICONDUCTOR LASER - There is disclosed a Be-containing II-VI group semiconductor laser that has a laminated structure formed on an InP substrate to continuously emit at room temperature without crystal degradation. A basic structure of the semiconductor laser is formed over the InP substrate by use of a lattice-matched II-VI group semiconductor including Be. An active layer and cladding layers are formed to be a double heterostructure with a type I band lineup, in order to increase the efficiency for injecting carriers into the active layer. The active layer and the cladding layers are also formed to enhance the light confinement to the active layer, in which the Mg composition of the p-type cladding layer is set to Mg<0.2. | 06-04-2009 |
20090161716 | Laser diode - A laser diode capable of effectively inhibiting effects of feedback light is provided. A laser diode includes a substrate, and a laminated structure including a first conductive semiconductor layer, an active layer having a light emitting region, and a second conductive semiconductor layer having a projecting part on the surface thereof, on the substrate, wherein a feedback light inhibition part is provided on a main-emitting-side end face, and effects of feedback light in the vicinity of lateral boundaries of the light emitting region are inhibited by the feedback light inhibition part. | 06-25-2009 |
20100040103 | SEMICONDUCTOR DEVICE - The present invention provides a semiconductor device including: a semiconductor layer including an n-type first cladding layer, an n-type second cladding layer, an active layer, a p-type first cladding layer, and a p-type second cladding layer in this order on an InP substrate. The n-type first cladding layer and the n-type second cladding layer satisfy formulas (1) to (4) below, or the p-type first cladding layer and the p-type second cladding layer satisfy formulas (5) to (8) below. | 02-18-2010 |
20110182313 | LASER DIODE AND METHOD OF MANUFACTURING THE SAME - A laser diode which realizes NFP with a stable and uniform shape. The laser diode includes, on a semiconductor substrate, an active layer, one or a plurality of strip-shaped current confinement structures confining a current which is injected into the active layer, and a stacked structure including one or a plurality of strip-shaped convex portions extending in an extending direction of the current confinement structure. | 07-28-2011 |
20110206080 | LASER DIODE AND METHOD OF MANUFACTURING THE SAME - A laser diode which realizes NFP with a stable and uniform shape. The laser diode includes, on a semiconductor substrate, an active layer, one or a plurality of strip-shaped current confinement structures confining a current which is injected into the active layer, and a stacked structure including one or a plurality of strip-shaped convex portions extending in an extending direction of the current confinement structure. | 08-25-2011 |