According to one embodiment, a disk device includes a recording medium, electronic components including a magnetic head, a flexure, and an adhesive. The flexure includes a surface on which the electronic component is mounted, a first wiring and a second wiring each extending along the surface, and a groove provided on the surface between the first/second wirings. The adhesive is in contact with an inner surface of the groove and includes an adhesive portion attaching the electronic component to the surface. A first portion in the flexure is provided in a position apart from the electronic component. A second portion in the flexure is positioned closer to the adhesive portion than the first portion. A distance between the first wiring and the second wiring is larger than that in the first portion.

A PZT microactuator such as for a hard disk drive has a restraining layer bonded on its side that is opposite the side on which the PZT is mounted. The restraining layer comprises a stiff and resilient material such as stainless steel. The restraining layer can cover most or all of the top of the PZT, with an electrical connection being made to the PZT where it is not covered by the restraining layer. The restraining layer reduces bending of the PZT as mounted and hence increases effective stroke length, or reverses the sign of the bending which increases the effective stroke length of the PZT even further. The restraining layer can be one or more active layers of PZT material that act in the opposite direction as the main PZT layer. The restraining layer(s) may be thinner than the main PZT layer.

A pseudo feature for a suspension and method of manufacture are described. The pseudo feature for a suspension includes a first constraining layer; a second constraining layer; and a damping layer arranged between the first constraining layer and the second constraining layer.

According to one embodiment, a head suspension assembly includes a support plate, a wiring member on the support plate, a head, and a piezoelectric element on the wiring member. The wiring member includes a metal plate and a multilayered member including a first insulating layer, a conducting layer, a second insulating layer, and connection pads formed from the conducting layer. Each of the connection pads is overlaid on a recess formed in the first insulating layer, so as to form a recessed portion along the recess, and the second insulating layer includes an opening opposing each of the connection pads. The piezoelectric element is connected to the connection pads by a conductive adhesive filled in the openings and the recessed portions of the connection pads.

A data storage device includes at least one data storage disc, at least one head supported by a rotatable actuator arm, an elevator configured to move the rotatable actuator arm in a z direction, a first vertical guide post, a ramp assembly configured to support the head on a movable ramp, and a bracket attached to the movable ramp. The at least one head is configured to communicate with the at least one data storage disc when positioned over the at least one data storage disc. The movable ramp is moveable in a z direction parallel to the first vertical guide post. The bracket is engageable to the rotatable actuator arm so that the bracket moves along the first vertical guide post in unison with z direction motion of the rotatable actuator arm via the elevator, and the bracket is disengageable from the rotatable actuator arm.

A thin-film piezoelectric material elements are arranged on a thin-film piezoelectric material substrate. The thin-film piezoelectric material substrate includes an insulator on Si substrate including a substrate including silicon and an insulating layer on a surface of the substrate. The thin-film piezoelectric material element includes a thin-film laminated part on a top surface of the insulating layer. The thin-film laminated part includes a YZ seed layer including yttrium and zirconium, and formed on the top surface; a lower electrode film laminated on the YZ seed layer; a piezoelectric material film including lead zirconate titanate, shown by a formula Pb (Zr.sub.xTi.sub.(1-x)) O.sub.3(0≤×≤1), and an upper electrode film laminated on the piezoelectric material film. The thin-film laminated part further includes an upper piezoelectric-material protective-film, laminated on the upper side of the upper electrode film.

A data storage device is disclosed comprising a plurality of disks each comprising a top disk surface and a bottom disk surface, and a plurality of actuator arms each comprising a first fine actuator configured to actuate a top head over one of the top disk surfaces and a second fine actuator configured to actuate a bottom head over one of the bottom disk surfaces. A first fine driver controls the fine actuators of an even interleave of the actuator arms, and a second fine driver controls the fine actuators of an odd interleave of the actuator arms.

A flexure of a suspension for a disk drive includes a metal base and a wiring portion provided along the metal base and including a base insulation layer, a conductor layer overlaid on the base insulation layer, and a cover insulation layer overlaid on the conductor layer. The flexure includes a first area on which an electronic component is mounted and a second area aligned alongside the first area, and the first area includes a thin-walled portion which overlaps the electronic component and having a thickness less than a thickness of the second area.

Examples of a suspension are provided. The suspension includes a mount plate attached to a load beam at a suspension assembly attachment point. The suspension may include a first actuator and a second actuator located at the mount plate. The first actuator is shaped as a non-right angle parallelogram spanning across a first opening in the mount plate. The second actuator is shaped as a non-right angle parallelogram spanning across a second opening in the mount plate. The first and second actuators are configured to deflect the distal end of the mount plate, which causes the load beam to rotate with a rotation center located along the load beam.

A method of manufacturing a piezoelectric microactuator having a wrap-around electrode includes forming a piezoelectric element having a large central electrode on a top face, and having a wrap-around electrode that includes the bottom face, two opposing ends of the device, and two opposing end portions of the top face. The device is then cut through the middle, separating the device into two separate piezoelectric microactuators each having a wrap-around electrode.