8results about "Manufacture head surface" patented technology

To provide a magnetic recording device capable of stable recording operation.SOLUTION: A magnetic recording device 150 includes a magnetic recording medium group 20 and a magnetic head group 30. The magnetic recording medium group includes a first magnetic recording medium 21; a plurality of second magnetic recording media 22; and a plurality of third magnetic recording media 23. The magnetic head group includes a first magnetic head 31; a plurality of second magnetic heads 32; and a plurality of third magnetic heads 33. The first magnetic head can record data in the first magnetic recording medium by a first method. The plurality of second magnetic heads can record data in the plurality of second magnetic recording media by a second method. The plurality of third magnetic heads can record data in the plurality of third magnetic recording media by the second method. The first magnetic recording medium is provided between the plurality of second magnetic recording media and the plurality of third magnetic recording media in a first direction D1. The other magnetic recording medium in which the data is recorded by the first method does not overlap with the magnetic recording medium group in the first direction.SELECTED DRAWING: Figure 1

The present embodiments relate to a write head with an asymmetrical side gap (SG) design. In the asymmetrical design, the main pole can be disposed offset to a central axis of the write head such that the main pole is closer to a first side shield (SS) portion than a second SS portion. The asymmetrical design can be achieved using an ion-beam etching (IBE) or ion-beam deposition (IBD) process. The asymmetrical design can provide a narrower side gap width while mitigating any writability limitations or constraints caused by scaling down the SG.

A disk device capable of inhibiting diffusion of a joint body in an undesirable direction is provided. A disk device of one embodiment includes a magnetic disk, a head, a flexible member, a piezoelectric element, a first joint body, a second joint body, and a protrusion. The flexible member has a first outer surface and a first land and a second land provided to the first outer surface. The piezoelectric element has a second outer surface facing the first outer surface and a first electrode and a second electrode provided to the second outer surface. The first joint body joins the first land and the first electrode. The second joint body joins the second land and the second electrode. The protrusion is provided to the flexible member, is positioned between the first joint body and the second joint body, and protrudes from the first outer surface.

Aspects of the disclosure generally relate to a magnetic recording head of a magnetic media drive. In one example, the magnetic recording head includes a main pole, a back shield, and a spintronic device disposed between the main pole and the back shield. The spintronic device includes a negative polarization layer (NPL) disposed on the main pole, the NPL including FeTi, FeV, FeCr, or FeN; an interface layer disposed on the NPL, the interface layer including V, Cr, or Ru; a spacer layer disposed on the interface layer; and a spin torque layer (FGL) disposed on the spacer layer. When a current is applied to the spintronic device, the NPL and a first interface disposed between the NPL and the interface layer have a negative spin polarization, while the FGL and a second interface disposed between the FGL and the spacer layer have a positive spin polarization.

The present invention provides a write head having an asymmetrical side gap (SG) that offers a narrower side gap (SG) width while mitigating any limitations or constraints on write capability that may arise from reducing the side gap SG. [Solution] In the asymmetrical writing head 600, the main pole 602 is positioned offset with respect to the central axis A1 of the writing head such that it is closer to the first SS 606A portion than to the second side shield (SS) 606B portion. The asymmetrical design can be achieved using an ion-beam etching (IBE) or ion-beam deposition (IBD) process.

The present application provides a magnetic head and a magnetic recording and reproducing apparatus in which the deterioration of a spin torque control element can be easily known. The magnetic head according to an embodiment includes a main pole, an auxiliary pole disposed apart from the main pole by a write gap, a spin torque control element disposed in the write gap, a bias current control section that supplies a bias current to the spin torque control element, and a resistance measurement section that measures a resistance value of the spin torque control element, wherein the difference between a first resistance value when the bias current is supplied with a polarity opposite to the polarity of the magnetization reversal of the spin torque control element and a second resistance value when the bias current is supplied with the polarity of the magnetization reversal of the spin torque control element is 4% or less.

A servo pattern recording head includes: a plurality of head cores that are magnetically separated from each other; and a plurality of gap patterns that are formed on a front surface of each of the plurality of head cores and that are used for recording a plurality of servo patterns in a width direction of a magnetic tape by applying a magnetic field to the magnetic tape in response to a pulse current, in which the plurality of gap patterns are formed on the front surface along a direction corresponding to the width direction, and the plurality of gap patterns deviate from each other at a predetermined interval in a direction corresponding to a longitudinal direction of the magnetic tape between the gap patterns adjacent to each other along the direction corresponding to the width direction.

The present disclosure generally relate to a tape drive including a tape head assembly comprising a tape head. The tape head assembly further comprises a substrate having a leading edge (LE), a trailing edge (TE), and a first media facing surface (MFS) disposed between the leading and trailing edges, and a recession disposed in the substrate, the recession being recessed from the first MFS. The tape head is disposed in the recession. The tape head has a second MFS that extends above the first MFS by a distance of about 20 nm to about 200 nm. The LE comprising a first step and a second step. The first and second steps, the recession, and the extended tape head enable a tape of the tape drive to be spaced from the substrate and tape head as the tape moves over the tape head assembly during operation.