16results about "Combination recording" patented technology

The present embodiments relate to a heat-assisted magnetic recording (HAMR) write head with a NFT bi-layer structure with a bottom taper, which can be applied to one or both layers of the two layers. A heat-assisted magnetic recording (HAMR) write head can include a main pole including a tip portion configured to interact with a magnetic recording medium at an air-bearing surface (ABS). The HAMR write head can further include a near-field transducer (NFT) that includes a dielectric waveguide, a plasmon generator (PG) layer, and a second layer. The second layer can include a thermo-mechanically stable material disposed adjacent to the PG layer. Further, the PG layer and the second layer can form a taper angle relative to the ABS ranging between 30 and 60 degrees.

The present embodiments relate to a noble metal coating on a parabolic waveguide blocker surface to future improve thermal gradient for HAMR head which can provide an improved thermal spot confinement over other designs. More particularly, the present embodiments relate to a component in the near field transducer (NFT), made of a metallic parabolic shaped waveguide blocker (PWB) with noble metal coating on the PWB surface. The designs as described herein can include a noble metal coating (e.g., Au, Rh, Ir, Pt, Aluminum (Al), etc.) which can enable a plasmonic effect on the PWB surface for HAMR thermal gradient improvement.

Maintains good write characteristics in a heat-assisted magnetic recording and playback device. [Solution] According to the embodiment, the adjustment method for a heat-assisted magnetic recording and playback device is an adjustment method for a heat-assisted magnetic recording and playback device equipped with a heat-assisted magnetic recording head and a heat-assisted magnetic recording medium, wherein the bit density in the starting area of ​​the recording band and in each area storing information other than user data is changed to be lower than the bit density of the areas other than the starting area in order to improve the write characteristics.

The present invention relates to a magnetic recording head assembly for a magnetic media drive. The magnetic recording head assembly includes a slider having a medium-facing surface (MFS), a top surface opposite the MFS, a trailing surface adjacent to the top surface, and an optical grating disposed on the trailing surface. A vertical-cavity surface-emitting laser (VCSEL) device is attached to the trailing surface of the slider. The VCSEL device is aligned with the optical grating. A magnetic recording head including a waveguide and a near-field transducer (NFT) coupled to the waveguide is disposed on the trailing surface of the slider. The VCSEL device can emit multiple phase-coherent laser beams onto the optical grating. The optical grating can direct the emitted laser beams at approximately 90 degrees relative to the waveguide.

The present disclosure generally relates to a magnetic recording head for a magnetic media drive. The magnetic recording head comprises a main pole, a waveguide disposed adjacent to the main pole, a near field transducer (NFT) coupled between the main pole and the waveguide, the NFT being recessed from a media facing surface (MFS), a thermal shunt disposed on the NFT, the thermal shunt being recessed from the MFS, and a stable material disposed between the NFT and the MFS. The stable material is spaced from the thermal shunt, and the stable material and the NFT comprise different materials. In some embodiments, a surface of the stable material facing the waveguide is tapered. The stable material may comprise two or more layers, the two or more layers comprising different materials.

The present disclosure generally relates to a magnetic recording head for a magnetic media driver. The magnetic recording head includes: a main pole; a waveguide disposed adjacent to the main pole; a near field transducer (NFT) coupled between the main pole and the waveguide, the NFT being recessed from a media facing surface (MFS); a thermal diverter disposed on the NFT, the thermal diverter being recessed from the MFS; and a stabilizing material, the stabilizing material being disposed between the NFT and the MFS. The stabilizing material is spaced apart from the thermal splitter, and the stabilizing material and the NFT comprise different materials. In some embodiments, a surface of the stabilizing material facing the waveguide is tapered. The stabilizing material may include two or more layers, the two or more layers including different materials.

Writer head products for heat-assisted magnetic recording devices and methods of making the same are disclosed. The writer heads include multiple layers including a waveguide blocking layer, a waveguide layer, a near-field transducer layer, a heat sink layer, and a peg layer. The peg layer may comprise a small triangular section that extends from an air-bearing surface into the optical component. The writer heads further include a main magnetic pole adjacent to the optical component.

The spot size converter (SSC) in the HAMR magnetic recording head assembly has multiple split-assist core structures. Each split-assist core structure includes multiple assist cores and a main waveguide. Each split core may also include one or more side waveguides, where the main waveguide is sandwiched between the side waveguides and between the top and bottom assist cores. Adjacent split-assist core structures may share an assist core. The split-assist core structure reduces the light source power used to write data to the magnetic media.

The embodiment of the invention relates to a heat-assisted magnetic recording and reproducing apparatus and an adjusting method thereof. According to an embodiment, a method for adjusting a heat-assisted magnetic recording / reproducing device is a method for adjusting a heat-assisted magnetic recording / reproducing device equipped with a heat-assisted magnetic recording head and a heat-assisted magnetic recording medium. Write characteristics are improved by changing the bit density in a start region of a shingled tape and each region in which information other than user data is stored so as to be lower than the bit density in a region other than the start region.

The present invention relates to a magnetic recording head assembly for a magnetic media drive. The magnetic recording head assembly includes a slider having a medium-facing surface (MFS), a top surface opposite the MFS, a trailing surface adjacent to the top surface, and an optical grating disposed on the trailing surface. A vertical-cavity surface-emitting laser (VCSEL) device is attached to the trailing surface of the slider. The VCSEL device is aligned with the optical grating. A magnetic recording head including a waveguide and a near-field transducer (NFT) coupled to the waveguide is disposed on the trailing surface of the slider. The VCSEL device can emit multiple phase-coherent laser beams onto the optical grating. The optical grating can direct the emitted laser beams at approximately 90 degrees relative to the waveguide.

To provide improved thermal spot confinement in a heat assisted magnetic recording (HAMR) write head.SOLUTION: The HAMR write head 400 comprises a main pole 402, a wave guide core 410, bi-layer transducers disposed between the main pole 402 and the wave guide core 410, a dielectric spacer layer disposed adjacent to the wave guide core 410, parabolic wave guide blockers (PWBs) 416, and a noble metal layer 414 disposed between the PWB416 and the dielectric spacer layer, wherein the noble metal layer 414 is 20-100 nanometers thick and comprises any of ruthenium (Ru), iridium (Ir), platinum (Pt), gold (Au) and alloys thereof.SELECTED DRAWING: Figure 4

Writer head products for heat-assisted magnetic recording devices and methods of making the same are disclosed. The writer heads include multiple layers including a waveguide blocking layer, a waveguide layer, a near-field transducer layer, a heat sink layer, and a peg layer. The peg layer may comprise a small triangular section that extends from an air-bearing surface into the optical component. The writer heads further include a main magnetic pole adjacent to the optical component.

Embodiments of the present disclosure generally relate to a vertical cavity surface emitting laser, a head gimbal assembly for mounting a vertical cavity surface emitting laser, and devices incorporating such articles. In an embodiment, a vertical cavity surface emitting laser (VCSEL) device is provided. The VCSEL device includes a chip for mounting on a slider and two laser diode electrodes. The chip has six surfaces, wherein a first surface of the chip is for facing the slider, a second surface of the chip is opposite the first surface, and the two laser diode electrodes are positioned in any combination on one or more of a third surface, a fourth surface, a fifth surface, or a sixth surface of the chip.

A heat‑assisted magnetic recording (HAMR) head has a slider with a gas-bearing-surface (GBS). The slider supports a near-field transducer (NFT) and a main magnetic pole that has a step or recess in the NFT-facing surface near the GBS that contains plasmonic material. A thermal shunt is located between the NFT and the main pole to allow heat to be transferred away from the optical spot generated by the NFT. The NFT-facing surface of the main pole that is recessed from the step away from the GBS is in contact with the thermal shunt, and the thermal shunt is in contact with the plasmonic material in the step in the back region recessed from the GBS, so there is no increase in the spacing between the NFT and a large portion of the main pole.

According to one embodiment, an adjustment method of a heat-assisted magnetic recording and reproduction device including a magnetic recording head and a heat-assisted magnetic recording medium, in which write characteristics are improved in a start area of a shingled magnetic recording band and in each area storing information other than user data.

A recording head has a write pole with a pole tip extending to a media-facing surface of the recording head. A peg coupler is located on a substrate-parallel surface of the pole tip and extending to the media facing surface. A near-field transducer is proximate the media-facing surface and includes a plate-like, enlarged part with a peg extending from the enlarged part towards the media-facing surface. The peg separated is separated in a downtrack direction from the peg coupler by a coupling gap. The enlarged part has a coupling surface facing the write pole, and includes an inlay on or near the coupling surface and spaced away from the peg. The inlay extends at least partially through a thickness of the enlarged part in the downtrack direction and extends between opposing crosstrack edges of the enlarged part.