摘要:
According to an aspect of an embodiment, a method for manufacturing a magnetic head support having a piezoelectric device on a metal plate member comprises the steps of: providing a metal plate member; forming a piezoelectric layer of a piezoelectric material on the plate member at an elevated temperature; forming a first electrode layer of an electrical conducting material on the piezoelectric layer; and bending the metal plate member at a bending portion adjacent to the piezoelectric layer while the temperature is lowered from the elevated temperature after forming the piezoelectric layer.
摘要:
A piezoelectric actuator comprises a body of a piezoelectric material, electrode patterns embedded in the body, and a sidewall protective film of a piezoelectric material covering at least a sidewall surface of the body, the sidewall protective film covering the electrode patterns at the sidewall surface of the body.
摘要:
A device having a capacitor element includes: an underlying body having a non-orientated first surface; a lower electrode formed on the first surface of the underlying body, the lower electrode containing conductive metal oxide and not containing noble metal, such as LaNiO3, the conductive metal oxide having a (0 0 1) orientated ABO3 type pervskite structure; a ferroelectric layer formed on the lower electrode, having a rhombohedral ABO3 type pervskite structure, the ferroelectric layer being preferentially (0 0 1) orientated in conformity with the orientation of the lower electrode, and an upper electrode formed on the ferroelectric layer.
摘要:
A micro displacement mechanism minutely displaces an object to be driven. The micro displacement mechanism includes a stationary part and an actuator fixed to the stationary part so as to rotatably support the object to be driven. The actuator includes a pair of piezoelectric actuators attached to opposite side surfaces of said object to be driven, respectively. The pair of piezoelectric actuators are arranged at point symmetric positions with respect to a center of gravity of the object to be driven.
摘要:
A micro displacement mechanism minutely displaces an object to be driven. The micro displacement mechanism includes a stationary part and an actuator fixed to the stationary part so as to rotatably support the object to be driven. The actuator includes a pair of piezoelectric actuators attached to opposite side surfaces of said object to be driven, respectively. The pair of piezoelectric actuators are arranged at point symmetric positions with respect to a center of gravity of the object to be driven.
摘要:
A piezoelectric actuator comprises a body of a piezoelectric material, electrode patterns embedded in the body, and a sidewall protective film of a piezoelectric material covering at least a sidewall surface of the body, the sidewall protective film covering the electrode patterns at the sidewall surface of the body.
摘要:
A magnetic disk drive includes a magnetic head, a magnetic disk, an actuator for changing the position of the magnetic head with respect to the magnetic disk, a sensor for detecting vibration of the magnetic head; and a controller for detecting contact between the magnetic head and the magnetic disk on the basis of the detected vibration and for controlling the actuator.
摘要:
A number of single crystal domains having crystal orientations different from each other cohere to form one grain, and a number of grains cohere to form a piezoelectric material. When a grain has a size exceeding a certain size, cracks take place in the surface of the grain. Because of generation of the cracks constraining forces from adjacent domains are weak, and a displacement which is substantially the same as a displacement ideal to piezoelectric material can be obtained.
摘要:
A photonic crystal structural body has a structure that a second mediums whose refractive index changes with an external field is periodically distributed in a first medium whose refractive index changes with the external field. An external field generator applies the external field to the photonic crystal structural body. It is possible to increase a change amount of a photonic band gap.
摘要:
An optical element is constituted by providing an optical waveguide formed with a piezoelectric material, a photonic crystal structure provided within the optical waveguide, a pair of control electrodes, which are provided so as to sandwich the upper and lower surfaces of the optical waveguide, for applying a voltage to the optical waveguide and supporting parts formed at the both ends of the lower control electrode.