Abstract: A magnetic stack includes a self-supporting substrate that carries first and second layer(s). The first layer(s) comprise a magnetic write pole, and the second layer(s) comprise a semiconductor laser. At least one of the second layer(s) is monocrystalline and incompatible with epitaxial growth on the substrate. No support substrate other than the self-supporting substrate attaches to the second layer(s). The magnetic stack may include a near field transducer (NFT) disposed to receive light emitted by the laser. A waveguide may transmit light from the laser to the NFT, or the NFT may couple to the laser without an intervening waveguide. The magnetic stack may be configured for heat assisted magnetic recording (HAMR).

Abstract: An apparatus includes a read/write head disposed on a slider, a control circuit disposed on the slider, and an adjustable delay line disposed on the slider. The adjustable delay line delays transmission of aligned write data to the read/write head by an adjustable delay. The adjustable delay is controlled by the control circuit a function of read synchronization data provided by the read/write head.

Abstract: A non-limiting embodiment of a magnetic writer has at least a write element having a write element tip and a conductive structure adjacent the write element. The conductive structure has at least two conductive elements positioned substantially parallel to one another and separated by an electrically insulating material. Each of the conductive elements carries a time-varying signal to generate an oscillating magnetic field from a displacement current between the two conductive elements, with the oscillating magnetic field being proximate the write element tip and extending parallel to the air bearing surface. A frequency of the oscillating magnetic field is a function of a frequency of the time-varying signal.

Abstract: The presently disclosed technology teaches a transducer head with a read sensor, a write pole, and one or more waveform sensors attached to the transducer head. Further, a waveform propagates in the direction of a BPM and the waveform sensor is configured to detect the waveform after it is reflected from the BPM. Additionally, a spin-polarized current is influenced by the BPM and a spin angular momentum sensor detects changes in spin angular momentum of the current. Further, a processor relates at least one property of the reflected waveform and/or current with positions of patterned bits on the BPM. The processor may then modify a timing signal and/or transducer head position to ensure that data bits are accurately written to the BPM. The end result is the ability to more quickly and accurately detect the patterned bits and synchronize a position of the transducer head with the patterned bits.

Abstract: A perpendicular write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing side, a leading side that is opposite the trailing side, and first and second sides; side gaps, wherein the side gaps are proximate the write pole along the first and second side edges; and side shields proximate the side gaps, wherein the side shields have gap facing surfaces and include at least one set of alternating layers of magnetic and non-magnetic materials, wherein only one kind of material makes up the gap facing surfaces at the air bearing surfaces.

Abstract: A transducing head writer comprising a write pole having write pole tip, a yoke disposed on the write pole at a location that is recessed from the write pole tip, and a bridge feature disposed on the write pole between the yoke and the write pole tip, where the bridge feature has a geometry that is larger at a recessed end adjacent to the yoke compared to a proximate end adjacent to the write pole tip.

Abstract: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.

Abstract: A method and apparatus for managing data, particularly in regard to non-volatile memory cells. In some embodiments, at least two actuating conductors are at least partially surrounded by a main ferromagnetic core and an adjacent hard magnet. When current is conducted through the actuating conductors, a flexible beam is induced to traverse a first air gap that defines a high resistance position and a low resistance position.

Abstract: A magnetic recording head includes a write pole and a first permanent magnet. The write pole has a write pole tip, a leading edge, a trailing edge, a first side and a second side. The first permanent magnet is located either at the trailing edge of the write pole, the first side of the write pole or at the second side of the write pole. The first permanent magnet has a magnetization orientation that is changed in relation to a field of the write pole.

Abstract: An apparatus comprises a slider body, a transducer and a write driver. The transducer comprises a writer. The write driver is integrated on the slider body, and directly connected to the writer.

Abstract: The presently disclosed technology teaches a transducer head with a read sensor, a write pole, and one or more waveform sensors attached to the transducer head. Further, a waveform propagates in the direction of a BPM and the waveform sensor is configured to detect the waveform after it is reflected from the BPM. Additionally, a spin-polarized current is influenced by the BPM and a spin angular momentum sensor detects changes in spin angular momentum of the current. Further, a processor relates at least one property of the reflected waveform and/or current with positions of patterned bits on the BPM. The processor may then modify a timing signal and/or transducer head position to ensure that data bits are accurately written to the BPM. The end result is the ability to more quickly and accurately detect the patterned bits and synchronize a position of the transducer head with the patterned bits.

Abstract: The presently disclosed technology teaches integrating disc drive electronics into a transducer head. Decreased electrical transit times and data processing times can be achieved by placing the electronics on or within the transducer head because electrical connections may be made physically shorter than in conventional systems. The electronics may include one or more of a control system circuit, a write driver, and/or a data buffer. The control system circuit generates a modified clock signal that has a fixed relation to phase and frequency of a bit-detected reference signal that corresponds to positions of patterned bits on the disc. The write driver writes outgoing data bits received from an external connection to off-head electronics directly to the writer synchronized with the modified clock signal. The data buffer stores and converts digital data bits sent from the off-head electronics to an analog signal that is synchronized with the modified clock signal.

Abstract: An apparatus includes a read/write head disposed on a slider, a control circuit disposed on the slider, and an adjustable delay line disposed on the slider. The adjustable delay line delays transmission of aligned write data to the read/write head by an adjustable delay. The adjustable delay is controlled by the control circuit a function of read synchronization data provided by the read/write head.

Abstract: A magnetic writer includes a write element having a write element tip and a conductive structure adjacent the write element. The conductive structure includes two conductive elements positioned substantially parallel to one another and separated by an electrically insulating material. Each of the conductive elements carries a time-varying signal to generate an oscillating magnetic field from a displacement current between the two conductive elements, with the oscillating magnetic field being proximate the write element tip and extending parallel to the air bearing surface. A frequency of the oscillating magnetic field is a function of a frequency of the time-varying signal.

Abstract: A system includes a magnetic recording device and a circuit including at least one active semiconductor component. The circuit is formed on the magnetic recording device and generates an output associated with operation of the magnetic recording device.

Abstract: A method and apparatus for managing data, particularly in regard to non-volatile memory cells. In some embodiments, at least two actuating conductors are at least partially surrounded by a main ferromagnetic core and an adjacent hard magnet. When current is conducted through the actuating conductors, a flexible beam is induced to traverse a first air gap that defines a high resistance position and a low resistance position.

Abstract: A system includes a magnetic recording device and a circuit including at least one active semiconductor component. The circuit is formed on the magnetic recording device and generates an output associated with operation of the magnetic recording device.