A recording head for writing data on tracks of a data storage medium is provided. The recording head includes a writer having a write pole and a trailing shield. The write pole includes a pole tip configured to write on the tracks of the data storage medium. The recording head also includes first and second writing-assistance wires positioned between the pole tip and the trailing shield in a down-track direction to enable a writing-assistance current to be provided to produce an assist magnetic field that augments a write field produced by the write pole.

According to one embodiment, a magnetic recording device includes a magnetic head, a first circuit, a second circuit, a third circuit, and a controller. The magnetic head includes a first magnetic pole, a second magnetic pole, a magnetic element, and a coil. The magnetic element is located between the first magnetic pole and the second magnetic pole. The magnetic element includes a first magnetic layer. The first circuit is configured to supply a coil current to the coil. The second circuit is configured to supply an element current to the magnetic element. The third circuit is configured to detect an electrical resistance of the magnetic element. The controller is configured to control the element current by controlling the second circuit based on the electrical resistance detected by the third circuit.

According to one embodiment, a magnetic recording device for utilizing assisted magnetic recording includes a magnetic head, a first circuit, a second circuit, a third circuit, and a controller. The magnetic head includes a first magnetic pole, a second magnetic pole, a magnetic element, and a coil. The magnetic element is located between the first magnetic pole and the second magnetic pole. The magnetic element includes a first magnetic layer. The first circuit is configured to supply a coil current to the coil. The second circuit is configured to supply an element current to the magnetic element. The third circuit is configured to detect an electrical resistance of the magnetic element. The controller is configured to control the element current by controlling the second circuit based on the electrical resistance detected by the third circuit.

A perpendicular magnetic recording (PMR) writer is disclosed wherein an insulation layer is formed between a top yoke (TY) and an uppermost (PP3) trailing shield to electrically isolate the main pole (MP) from a trailing loop for magnetic flux return. One or both of a first non-magnetic (NM) metal layer and a second NM metal layer are formed between the MP tip and a hot seed layer and side shields, respectively, to form an electrical path that is in parallel to that of a dynamic fly height (DFH) heater circuit. MP tip protrusion is enhanced and writability is improved especially for track widths <40 nm, and is tunable by the volume of the first and second NM layer, and the composition of the NM metals. Existing writer pad layouts may be employed and there is no additional cost to PMR backend processes.

Embodiments of the present disclosure generally relate to tape drives used for magnetic recording on tapes. Tape drives use tape heads that comprise a read head, a write head, and an additional head that may be a write head or a read head. The tape head is fabricated over a common substrate with the first head being formed first, followed by a shield layer, followed by the second head, followed by another shield layer, and finally followed by the third head. Fabricating the tape head over a common substrate is cost effective. The tape head can be wired such that fewer parallel connections between the heads and bond pads are present. As such, cross-talk between the wires and noise is reduced.

A recording head for writing data on tracks of a data storage medium is provided. The recording head includes a writer having a write pole and a trailing shield. The write pole includes a pole tip configured to write on the tracks of the data storage medium. The recording head also includes first and second writing-assistance wires positioned between the pole tip and the trailing shield in a down-track direction to enable a writing-assistance current to be provided to produce an assist magnetic field that augments a write field produced by the write pole.

According to one embodiment, a magnetic recording device includes a magnetic head, and an electrical circuit. The magnetic head includes a first magnetic pole, a second magnetic pole, and a stacked body provided between the first and the second magnetic poles. The stacked body includes a first nonmagnetic layer, a first magnetic layer provided between the first nonmagnetic layer and the second magnetic pole, a first layer provided between the first magnetic layer and the second magnetic pole, a second nonmagnetic layer provided between the first layer and the second magnetic pole, a second magnetic layer provided between the second nonmagnetic layer and the second magnetic pole, and a third nonmagnetic layer provided between the second magnetic layer and the second magnetic pole. The electrical circuit supplies, to the stacked body, a first current having a first orientation from the second magnetic pole toward the first magnetic pole.

A spin transfer torque reversal assisted magnetic recording (STRAMR) structure is disclosed wherein two flux change layers (FCL1 and FCL2) are formed within a write gap (WG) and between a main pole (MP) trailing side and trailing shield (TS). Each FCL has a magnetization that flips to a direction substantially opposing a WG field when a direct current of sufficient current density is applied across the STRAMR device thereby increasing reluctance in the WG and producing a larger write field output at the air bearing surface. A reference layer (RL1) is used to reflect spin polarized electrons that exert spin torque on FCL1 and cause FCL1 magnetization to flip. A second reference layer (or the MP or TS) is employed to reflect spin polarize electrons that generate spin torque on FCL2 and flip FCL2 magnetization. Non-spin polarization preserving layers and spin polarization preserving layers are also in the STRAMR structure.

A heat-assisted magnetic recording (HAMR) hard disk drive has a gas-bearing slider supporting a near-field transducer (NFT) and a NFT temperature sensor (NTS). An optional first IVC circuitry may provide a bias voltage to the slider body to assure substantially zero electrical potential between the slider body and the disk to minimize slider-disk contact and lubrication pick-up. A second IVC circuitry operates independently of the first IVC circuitry and provides a negative bias voltage to the NTS (and the connected NFT) relative to the disk to minimize the adverse effects of excessive heating on the NFT.

A heat-assisted magnetic recording (HAMR) hard disk drive has a gas-bearing slider supporting a near-field transducer (NFT) and a NFT temperature sensor (NTS). An optional first IVC circuitry may provide a bias voltage to the slider body to assure substantially zero electrical potential between the slider body and the disk to minimize slider-disk contact and lubrication pick-up. A second IVC circuitry operates independently of the first IVC circuitry and provides a negative bias voltage to the NTS (and the connected NFT) relative to the disk to minimize the adverse effects of excessive heating on the NFT.