Abstract: A shingled magnetic recording hard drive is presented to a resource manager of a host device as an emulated device such as one or more optical media, an array of sequential access media, and/or write-once, read-many device. Data targeted for the emulated device is written to the shingled magnetic recording hard drive.

Abstract: Tuning a skew between a read head and a write head, may include setting a center value of a track according to a track density of a storage medium; writing data having a certain pattern to at least one target track and at least two tracks adjacent to the target track, while following the center value of the track; reading the data having a certain pattern from the target track by using a plurality of off track values in an off track range based on the center value of the track; and detecting an off track value having a minimum error occurrence number among error occurrence numbers with respect to the read data having a certain pattern corresponding to each of the plurality of off tracks, as an optimum off track value of the target track.

Abstract: A method of imprint lithography includes imprinting a first pattern with a first template on a first substrate of a lithographic template. A second pattern is imprinted with a second template on the substrate of the lithographic template. The first pattern and the second pattern at least partially overlap, thus forming a third pattern. The third pattern is lithographically formed on a second substrate with the lithographic template. In an embodiment, the first pattern is a concentric line pattern formed by thin film deposition. In an embodiment, the second pattern is a radial line pattern. In an embodiment the first pattern and the second pattern may have line frequency increased.

Abstract: A substrate having a carbon-deuterium protective overcoat layer, and method for making the same. In some embodiments, the substrate includes a recording structure having a magnetic recording layer. A protective overcoat layer is Formed on the recording structure, the protective overcoat layer composed of carbon-carbon (C—C) and carbon-deuterium (C-D) bonds and having no carbon-hydrogen (C—H) bonds.

Abstract: Programmable metallization memory cells having an active electrode, an opposing inert electrode and a variable resistive element separating the active electrode from the inert electrode. The variable resistive element includes a plurality of alternating solid electrolyte layers and electrically conductive layers. The electrically conductive layers electrically couple the active electrode to the inert electrode in a programmable metallization memory cell. Methods to form the same are also disclosed.

Abstract: Tolerances for manufacturing reader structures for transducer heads continue to grow smaller and storage density in corresponding storage media increases. Reader stop layers may be utilized during manufacturing of reader structures to protect various layers of the reader structure from recession and/or scratches while processing other non-protected layers of the reader structure. For example, the stop layer may have a very low polish rate during mechanical or chemical-mechanical polishing. Surrounding areas may be significantly polished while a structure protected by a stop layer with a very low polish rate is substantially unaffected. The stop layer may then be removed via etching, for example, after the mechanical or chemical-mechanical polishing is completed.

Abstract: A magnetic recording head consists of a write pole and a near field transducer close to the write pole that focuses light energy to a focal point. A near field transducer is positioned to receive light energy from a waveguide. The near field transducer comprises an energy-receiving end and an energy-radiating end. The energy-receiving end is located near the focal point of the waveguide and the energy-radiating end is shaped such that it is narrower closer to the write pole and wider farther from the write pole.

Abstract: Method and apparatus for aligning addresses of resource sets in a memory space used by a software system. The resource sets are accessed by multiple layers of a software system and are each provided with a respective alignment requirement preferably comprising a power of two. A table preferably includes entries for each of the resource sets, and the table is sorted to provide a decreasing sequence beginning with the resource set having the greatest alignment requirement and ending with the resource set having the smallest alignment requirement. The resource sets are thereafter placed in the memory space in accordance with the decreasing sequence at localized addresses that align with the respective alignment requirements of the resource sets. Each resource within each resource set uses a localized, base address. The actual address within the memory space is preferably stored at a specified offset within a global structure.

Abstract: A bit patterned magnetic recording medium, comprises a non-magnetic substrate having a surface; a plurality of spaced apart magnetic elements on the surface, each of the elements constituting a discrete magnetic domain or bit; and a layer of a ferromagnetic material for regulating magnetic exchange coupling between said magnetic elements. The layer has a saturation magnetization Ms ranging from about 1 to about 2,000 emu/cm3, preferably below about 400 emu/cm3, more preferably below about 200 emu/cm3, and may overlie, underlie, or at least partially fill spaces between adjacent magnetic elements.

Abstract: Provided herein is a motor including a plastic component; a stationary component having a thrustplate; and a rotatable component having a sleeve and a counterplate, wherein the plastic component is positioned outside the sleeve, and wherein the thrustplate and the counterplate are positioned to form a fluid dynamic bearing (“FDB”) at a top portion of the sleeve. Also provided is a motor comprising a plastic component; a stationary component comprising a thrustplate; and a rotatable component comprising a sleeve; wherein the plastic component is affixed to the sleeve, and wherein the thrustplate and the plastic component are positioned to form a FDB. Also provided is a motor comprising a plastic component; a stationary component comprising an inner component; and a rotatable component comprising the plastic component and a supporting means for supporting the inner component, wherein the inner component and the supporting means are positioned to form a FDB.

Abstract: A plurality of aligned or unaligned data packets are received in a data storage device. A data bundle is constructed by concatenating different ones of the plurality of unaligned data packets. Data loss protection identifiers are utilized to track the construction of the data bundle. The data loss protection identifiers are employed to prevent at least one of packet data loss or metadata loss in response to detecting a state reset of the data storage device.

Abstract: A data media may generally be configured in accordance with various embodiments with contactingly adjacent first and second heatsink layers that are tuned with a common crystallographic orientation and with different thermal conductivities to provide a predetermined thermal gradient. The data media may further be configured with a recording layer formed with the common crystallographic orientation adjacent the first and second heatsink layers.

Abstract: Non-volatile multi-bit memory with programmable capacitance is disclosed. Illustrative data memory units include a substrate including a source region and a drain region; and a gate stack structure over the substrate and between the source region and drain region. The gate stack structure includes a first solid electrolyte cell and a second solid electrolyte cell. The solid electrolyte cells having a capacitance that is controllable between at least two states. A gate contact layer is electrically coupled to a voltage source. The first solid electrolyte cell and the second solid electrolyte cell separate the gate contact layer from the substrate.

Abstract: Apparatus and method for supplying electrical power to a device. A system on chip (SOC) integrated circuit includes a first region having a processing core and a second region characterized as an always on domain (AOD) power island electrically isolated from the first region and having a power control block. A first power supply module is used to apply power to the first region, and a second power supply module is used to apply power to the second region. The second power supply module includes a main switch between the first power supply module and a host input voltage terminal. The power control block initiates a low power mode by transitioning the main switch to an open state. This causes the first region to receive no electrical power while the second region continuously receives power during the low power mode.

Abstract: A free ferromagnetic data storage layer of an MRAM cell is coupled to a free ferromagnetic stabilization layer, which stabilization layer is directly electrically coupled to a contact electrode, on one side, and is separated from the free ferromagnetic data storage layer, on an opposite side, by a spacer layer. The spacer layer provides for the coupling between the two free layers, which coupling is one of: a ferromagnetic coupling and an antiferromagnetic coupling.

Abstract: Systems and methods from loading/unloading a data head for a disk drive provide for more efficient use of disk space. A method of loading/unloading a data head for a disk drive comprises determining a disk phase of a spinning disk arrangement, determining a loading/unloading position based on the disk phase, and loading or unloading the data head on or from, respectively, the spinning disk arrangement based on the determined disk phase. The determining a disk phase may be based on zero crossing of voltages for a three-phase motor associated with the spinning disk arrangement.

Abstract: An apparatus and associated method for a multi-bit memory capable of being selected with a magnetic layer. Various embodiments of the present invention are generally directed to a first selection layer with a low coercivity that is disposed between first and second storage layers that each have a high coercivity. In response to magnetic saturation of the first selection layer, programming of a logical state to the second storage layer is allowed.

Abstract: The presently disclosed technology describes systems and methods for attaining a ball bond using less than 1 thousandth of an inch diameter gold wire using ultrasonic bonding energy and without heating an underlying bonding pad. The ball bond allows the use of particularly small bonding pads that are particularly close to adjacent microelectronic structures that limit the use of other bonding techniques that have shallow take-off angles.

Abstract: A perpendicular magnetic recording medium having a dual-layer magnetic film is disclosed. The bottom layer is completely exchange decoupled, and the top layer contains a certain amount of exchange coupling optimized for recording performance. Preferably, the bottom magnetic layer contains stable oxide material (for example, TiO2) and other non-magnetic elements (for example, Cr). A method of manufacturing the media is also disclosed.

Abstract: The disclosure is related to systems and methods of controlling wear of a memory. In a particular embodiment, a system is disclosed that comprises a memory and a performance governor circuit coupled to the memory. The performance governor circuit is adapted to control a wear of the memory as a function of time.