Abstract: A chip-to-chip eutectic bonding system includes a stage with a top surface, a bottom surface, and a plurality of vacuum apertures extending therebetween and a carrier with a top surface, the top surface including one or more smooth surface portions and one or more rough surface portions, wherein at least one smooth carrier surface portion laterally aligns to at least one vacuum aperture, and at least one of the stage's rough surface portions frictionally couples to at least one of the carrier's rough surface portions when the carrier top surface couples to and opposes the stage bottom surface.

Abstract: Heat assisted magnetic recording uses a laser diode (LD) to provide energy during the writing process. The LD is bonded on a submount chip which is referred to as the Chip-On-Submount-Assembly (COSA). COSA devices undergo burn-in and testing in COSA burn-in fixtures, which include a first non-conductive layer having through holes and a second conductive layer having first openings. The second conductive layer is disposed over the first non-conductive layer with each of the first openings overlaying one of the through holes. COSA burn-in fixtures also include a third non-conductive layer having second openings that are larger than the first openings. The third non-conductive layer is disposed over the second conductive layer with each of the second openings overlaying one of the first openings, which forms pockets with a seat on the conductive layer for disposing the LD with one electrode in contact with the conductive layer.

Abstract: An alignment method for bonding a first component to a second component is described. A plurality of sliders having alignment markers are substantially aligned to the alignment markers of a plurality of illumination units and then positioned into alignment by moving the slider with respect to the illumination unit by an offset. The offset is calculated by scanning a light source around the waveguide to determine the distance that the alignment markers of the slider are separated from the alignment markers on the illumination unit.

Abstract: Heat assisted magnetic recording uses a laser diode (LD) to provide energy during the writing process. The LD is bonded on a submount chip which is referred to as the Chip-On-Submount-Assembly (COSA). COSA devices undergo burn-in and testing in COSA burn-in fixtures, which include a first non-conductive layer having through holes and a second conductive layer having first openings. The second conductive layer is disposed over the first non-conductive layer with each of the first openings overlaying one of the through holes. COSA burn-in fixtures also include a third non-conductive layer having second openings that are larger than the first openings. The third non-conductive layer is disposed over the second conductive layer with each of the second openings overlaying one of the first openings, which forms pockets with a seat on the conductive layer for disposing the LD with one electrode in contact with the conductive layer.

Abstract: An alignment method for bonding a first component to a second component is described. A plurality of sliders having alignment markers are substantially aligned to the alignment markers of a plurality of illumination units and then positioned into alignment by moving the slider with respect to the illumination unit by an offset. The offset is calculated by scanning a light source around the waveguide to determine the distance that the alignment markers of the slider are separated from the alignment markers on the illumination unit.

Abstract: A substrate assembly includes a chip coupled with a carrier, a substrate having a first surface and an opposing second surface, and a support structure mounted to the second surface of the substrate and in contact with the carrier. A method of bonding a chip and carrier assembly to a substrate includes contacting the chip and carrier assembly with the bond material and applying heat and force on the chip and carrier assembly until the support structure is mounted on the second surface of the substrate and in contact with the carrier. A substrate assembly includes a chip coupled with a carrier, a substrate having a first surface and an opposing second surface, and one of the carrier or the substrate comprising a trench having a periphery, wherein the second surface of the substrate supports the carrier along the periphery of the trench.

Abstract: A slider and method of making same to reduce contrast interference for visual identification of alignment marks on the slider for heat assisted magnetic recording (HAMR) includes a plurality of alignment marks arranged for alignment of a chip on submount assembly (COSA) with respect to the slider, and at least one shield arranged with the plurality of alignment marks. A hard disk drive includes a plurality of alignment marks arranged for alignment of a chip on submount assembly (COSA) with respect to the slider, and at least one shield arranged with the plurality of alignment marks.

Abstract: A nano imprint master and a method of manufacturing the same are provided. The method includes: implanting conductive metal ions into a substrate including quartz to form a conductive layer inside the quartz substrate; coating a resist on the quartz substrate in which the conductive layer is formed, to form a resist coating layer; exposing the resist coating layer to an electron beam to form micropatterns; etching the quartz substrate by using the resist coating layer, in which the micropatterns are formed, as a mask; and removing the resist coating layer to obtain a master in which micropatterns are formed.

Abstract: An apparatus having a recording layer of a magnetic material with a concentration of implanted ions that increases in relation to a thickness direction of the recording layer to provide the recording layer with a continuously varied perpendicular magnetic anisotropy constant.

Abstract: A nano imprint master and a method of manufacturing the same are provided. The method includes: implanting conductive metal ions into a substrate including quartz to form a conductive layer inside the quartz substrate; coating a resist on the quartz substrate in which the conductive layer is formed, to form a resist coating layer; exposing the resist coating layer to an electron beam to form micropatterns; etching the quartz substrate by using the resist coating layer, in which the micropatterns are formed, as a mask; and removing the resist coating layer to obtain a master in which micropatterns are formed.

Abstract: A nano imprint master and a method of manufacturing the same are provided. The method includes: implanting conductive metal ions into a substrate including quartz to form a conductive layer inside the quartz substrate; coating a resist on the quartz substrate in which the conductive layer is formed, to form a resist coating layer; exposing the resist coating layer to an electron beam to form micropatterns; etching the quartz substrate by using the resist coating layer, in which the micropatterns are formed, as a mask; and removing the resist coating layer to obtain a master in which micropatterns are formed.

Abstract: In an information storage device, a writing magnetic layer is formed on a substrate and has a magnetic domain wall. A connecting magnetic layer is formed on the writing magnetic layer, and an information storing magnetic layer is formed on an upper portion of side surfaces of the connecting magnetic layer. A reader reads information stored in the information storing magnetic layer.

Abstract: A nano imprint master and a method of manufacturing the same are provided. The method includes: implanting conductive metal ions into a substrate including quartz to form a conductive layer inside the quartz substrate; coating a resist on the quartz substrate in which the conductive layer is formed, to form a resist coating layer; exposing the resist coating layer to an electron beam to form micropatterns; etching the quartz substrate by using the resist coating layer, in which the micropatterns are formed, as a mask; and removing the resist coating layer to obtain a master in which micropatterns are formed.

Abstract: A perpendicular magnetic recording medium and a method of manufacturing the same are provided. The perpendicular magnetic recording medium comprises a recording layer including a plurality of regions formed in the depth direction of the recording layer and a magnetic anisotropy constant of a region relatively deeper than another region, among the plurality of regions, is greater than that of the another region. The method of manufacturing a perpendicular magnetic recording medium includes: forming a recording layer having perpendicular magnetic anisotropy; and irradiating the recording layer with ions.

Abstract: A nano imprint master and a method of manufacturing the same are provided. The method includes: implanting conductive metal ions into a substrate including quartz to form a conductive layer inside the quartz substrate; coating a resist on the quartz substrate in which the conductive layer is formed, to form a resist coating layer; exposing the resist coating layer to an electron beam to form micropatterns; etching the quartz substrate by using the resist coating layer, in which the micropatterns are formed, as a mask; and removing the resist coating layer to obtain a master in which micropatterns are formed.

Abstract: An information storage device using movement of magnetic domain walls includes a writing magnetic layer having a magnetic domain wall. A stack structure is formed on the writing magnetic layer. The stack structure includes a connecting magnetic layer and an information storing magnetic layer stacked sequentially. The information storage device also includes a reader for reading information stored in the information storing magnetic layer.

Abstract: Example embodiments may provide data storage devices using movement of magnetic domain walls including a first magnetic layer having at least two magnetic domains with determinable magnetization directions, and/or a soft second magnetic layer formed on a lower surface of the first magnetic layer. Magnetic domain walls may be moved even in curved regions of the first magnetic layer.

Abstract: An information storage device includes a magnetic layer and a supply unit. The magnetic layer includes a plurality of regions, a first region having a first magnetic anisotropic energy and a second region having a second magnetic anisotropic energy. The first and second regions are arranged alternately, and the second region is doped with impurity ions. The second magnetic anisotropic energy is less than the first magnetic anisotropic energy. The supply unit applies energy to the magnetic layer for moving magnetic domain walls within the magnetic layer.

Abstract: Provided is a memory device employing magnetic domain wall movement. The memory device includes a writing track and a column structure. The writing track forms magnetic domains that have predetermined magnetization directions. The column structure is formed on the writing track and includes at least one interconnecting layer and at least one storage track.

Abstract: In an information storage device, a writing magnetic layer is formed on a substrate and has a magnetic domain wall. A connecting magnetic layer is formed on the writing magnetic layer, and an information storing magnetic layer is formed on an upper portion of side surfaces of the connecting magnetic layer. A reader reads information stored in the information storing magnetic layer.