摘要:
A method and apparatus for scanning a media is described. More particularly, polarization detector and an atomic force microscope are coupled to a common platform indexed to a spindle. Optionally, an optical microscope may be coupled to the common platform. The polarization detector is used to detect a magnetic image, such as at least a portion of a servo pattern, of the media, and the atomic force microscope, which may be aligned using the magnetic image, is used with a magnetic microscopy module to scan the media. Accordingly, magnetic imagery may be achieved with indexing to a single spindle for positional consistency as between equipment. Moreover, the polarization detector may further be configured to detect scattered light for providing topographic imagery of the media.
摘要:
The embodiments disclose a method of fabricating a stack, including replacing a metal layer of a stack imprint structure with an oxide layer, patterning the oxide layer stack using chemical etch processes to transfer the pattern image and cleaning etch residue from the stack imprint structure to substantially prevent contamination of the metal layers.
摘要:
The embodiments disclose a method of fabricating a stack, including replacing a metal layer of a stack imprint structure with an oxide layer, patterning the oxide layer stack using chemical etch processes to transfer the pattern image and cleaning etch residue from the stack imprint structure to substantially prevent contamination of the metal layers.
摘要:
A magnetic data storage medium includes a dedicated transducing head contact zone for engaging an air bearing slider, primarily when the disk is stationary and also during disk accelerations and decelerations. The contact zone has a dual baseline texture, formed by first creating a recessed region within the transducing head contact zone, and then by forming multiple nodules or other texturing features within the recessed region. The texturing features project upwardly from a recessed surface of the recessed region, and also project above an upper surface of the disk by an amount less than the texturing feature height. Consequently, the texturing features are large enough to counteract stiction due to liquid lubricant meniscus formation, yet also have heights sufficiently low relative to the upper surface to allow reduced transducer flying heights. According to a preferred texturing process, the recessed region consists of multiple individual recesses produced by applying a carbon layer to the disk, then forming cavities by selective laser ablation of the carbon layer.
摘要:
The embodiments disclose a method of stack patterning, including loading a stack into a stationary stack stage, rotating one or more ion beam grid assemblies substantially concentrically aligned with the stationary stack stage to etch the stack and controlling the operation of the one or more ion beam grid assemblies to achieve substantial axial uniformity of the etched stack.
摘要:
The embodiments disclose a method of stack patterning, including loading a stack into a stationary stack stage, rotating one or more ion beam grid assemblies substantially concentrically aligned with the stationary stack stage to etch the stack and controlling the operation of the one or more ion beam grid assemblies to achieve substantial axial uniformity of the etched stack.
摘要:
Processes include aligning a disc with a template at a location so that the pattern from the template is transferred to the disc in a relative orientation. The relative orientation provides that when the disc with the transferred pattern is finally assembled into a hard disc drive, an inner diameter of the spindle hole of the disc may be abutted against an outer diameter of the disc drive spindle, and the data-containing patterns on the discs will be aligned concentrically with a center of the disc drive spindle. While the data-containing patterns are aligned concentrically with the disc drive spindle, the substrate itself is allowed to be non-concentric. Still other aspects include a disc having eccentric formations including PIM and one or more of bit patterns and servo information formed on a disc surface, the eccentricity of the formations is determined based on an expected difference between the radius of the spindle hole of the disc and the radius of the spindle on which the disc will be placed during assembly, with the PIM used to determine the angular alignment of the disc with the spindle.
摘要:
An integrated unit comprising a particle detection tool and a particle removal tool combined as one merged tool comprising a disc mounting mechanism having a mount for mounting the disc for both particle detection and particle removal, wherein the particle detection tool is adapted to distinguish between a fixed defect in the disc and a particle on the disc is disclosed herein. Also, the methods of manufacturing the integrated unit and using the integrated unit for detect detection and analysis are disclosed herein.
摘要:
A magnetic data recording medium substrate has a contact zone and a data zone. The contact zone is textured by forming multiple texturing features, each having a bell-shaped profile resembling a Gaussian curve. The features preferably are formed by pulsed laser energy applied to a glass substrate, or to an aluminum nickel-phosphorous substrate coated with a glass layer. As compared to previous laser texturing approaches, the laser beam is less narrowly focused to provide a beam impingement area with a diameter of at least three microns, forming texturing features with diameters of at least three microns. The texturing features preferably are uniform in height and diameter, and may be symmetrical or have asymmetrical aspects, so long as bell-shaped profiles are present in the direction of travel of the recording medium, relative to transducing heads.
摘要:
Processes include aligning a disc with a template at a location so that the pattern from the template is transferred to the disc in a relative orientation. The relative orientation provides that when the disc with the transferred pattern is finally assembled into a hard disc drive, an inner diameter of the spindle hole of the disc may be abutted against an outer diameter of the disc drive spindle, and the data-containing patterns on the discs will be aligned concentrically with a center of the disc drive spindle. While the data-containing patterns are aligned concentrically with the disc drive spindle, the substrate itself is allowed to be non-concentric. Still other aspects include a disc having eccentric formations including PIM and one or more of bit patterns and servo information formed on a disc surface, the eccentricity of the formations is determined based on an expected difference between the radius of the spindle hole of the disc and the radius of the spindle on which the disc will be placed during assembly, with the PIM used to determine the angular alignment of the disc with the spindle.