https://opensky.ucar.edu/islandora/object/articles%3A18161/datastream/PDF/view

Parameterization of mixed layer eddies. III: Implementation and impact in global ocean climate simulations

A piezoelectric/electrostrictive device including a substrate and a connection plate having a first end joined to the substrate and an opposed second end extending along a first direction, and first and second opposed sides along a second direction perpendicular to the first direction. A fixing plate is joined to the second end of the connection plate. A first side of a first diaphragm is joined to the first side of the connection plate and an opposed second side of the first diaphragm is joined to the substrate. A first side of a second diaphragm is joined to the substrate and an opposed second side of the second diaphragm is joined to the second side of the connection plate. A piezoelectric/electrostrictive element is provided on at least a portion of at least one planar surface of at least one of the diaphragms.

Piezoelectric/electrostrictive device

A piezoelectric/electrostrictive (P/E) device includes at least one actuator section secured to thin plate sections with an adhesive. The actuator section includes a multilayered member including at least three actuator films, each of which include a P/E layer and electrode films. One or more holes or recesses are formed in portions of the thin plate sections on which the P/E elements are formed. The electrode films contact upper and lower surfaces of respective P/E layers and alternately extend to opposite surfaces thereof. End surface electrodes electrically connect an electrode film that contacts one of the P/E layers and an electrode film that contacts another one of the P/E layers. The end surface electrodes are electrically connected to terminals which are provided on a surface of an outermost layer of the P/E layers, and which are separated from one another by a predetermined distance.

Piezoelectric/electrostrictive device and method of manufacturing same

The present invention provides a method of manufacturing a thin film magnetic head, capable of easily manufacturing a thin film magnetic head with high precision, in which a magnetic shield layer is disposed so as to surround a magnetic pole layer from three directions of a medium outflow direction and two side directions In a magnetic pole formation region surrounded by a first gap layer portion, a magnetic pole layer and a second gap layer portion are formed and the magnetic pole layer is covered with the first and second gap layer portions After that, a write shield layer is formed on the first and second gap layer portions so as to surround the magnetic pole layer from three directions (a trailing direction and two side directions) Since a gap between the magnetic layer and the write shield layer exerting an influence on recording characteristics is specified on the basis of the thickness of the first gap layer portion, different from the case where the gap is specified on the basis of pattern precision of the photolithography technique, the gap is controlled with high precision

Thin film magnetic head and method of manufacturing the same

A thin-film, perpendicular magnetic head includes a magnetic recording and reproducing substrate having a mechanochemically polished principal surface that includes a plurality of grooves filled with a nonmagnetic material; a thin-film conducting coil located on the polished surface of the substrate; an insulating layer of inorganic oxide covering the conductor coil and the polished principle surface of the magnetic substrate, this insulating layer including a via hole formed therein and having an exposed surface which is mechanochemically polished; a thin-film main pole on the polished surface of the insulating layer; and a protective overcoat covering the main pole.

Thin-film magnetic head

A perpendicular magnetic head of high recording and reproducing efficiency which integrally incorporates a step-up transformer. A main pole for picking up a reproduce magnetic flux from a recording medium and applying recording magnetic field thereto is formed of a magnetic thin film. A signal winding formed of a thin film is disposed in the immediate vicinity of the forward end of the main pole so as to have a high conversion sensitivity per turn with respect to the reproduce magnetic flux from the recording medium. The signal winding which itself constitutes a closed circuit interlinks a magnetic path of the step-up transformer, thereby forming a primary winding of the transformer. A secondary winding from which head output is taken out is wound in the magnetic path of the transformer.

Magnetic head for perpendicular magnetic recording and reproduction

In a magnetic head drive for a magnetic tape recorder of a helical scan system, a pair of first and second longitudinal bimorph elements fixed to a support member is connected to a flexible bridge member and a magnetic head is mounted to the bridge member. A pair of first and second electric sources supply electric voltages independently to electrodes of the first and second bimorph elements. The voltages applied to the bimorphs are controlled against a deviation from a record track in a magnetic tape to keep a protrusion quantity of the magnetic head constant for automatic tracking. In a magnetic tape recorder wherein the upper and lower drums of a rotating head scanner are fixed and the magnetic head is rotated along an elliptical orbit, the two bimorphs are controlled not only against a deviation from a record track in a magnetic tape but also to a rotation angle of the magnetic head in order to keep a protrusion quantity of the magnetic head constant.

Magnetic head drive which uses independently controlled piezo-electric elements

A magnetic head for the video tape recorder of azimuth recording type, which features an improved S/N ratio in the overwrite region and assures a high picture quality has a magnetic core for defining a magnetic gap in this head which is made of a plurality of magnetic materials differing in saturation flux density in the direction of track width, with the material having a higher saturation flux density being disposed on the overwriting side of the head. This arrangement permits recording to a greater depth than the depth of magnetization by previous recording to assure an improved picture quality with a higher S/N ratio.

Magnetic head for azimuth recording in a high density magnetic recording system

The authors have developed a computational method for simulating the behaviour of a tape running along a rotating cylinder with a video head fixed to it. The flexible tape is modeled as a thin anisotropic shell and the air-film is treated by the modified Reynolds equation. The two sets of equations are coupled in the finite element method. The calculated results were in good agreement with experimental ones, within an error of 7%. It is concluded that this simulation method will provide good information for optimizing head geometry and tape components. >

http://ieeexplore.ieee.org/iel1/30/2796/00085518.pdf

Finite element analysis of the interface phenomena between VCR tape and head

A multitrack magnetic head for use with a magnetic tape in a magnetic recording and reproducing system includes at least two magnetic head tips disposed adjacent to each other and movable with respect to the magnetic tape. The head tips include a leading head tip for initial sliding contact with the magnetic tape and a trailing head tip for subsequent sliding contact with the magnetic tape. The leading head tip is made of a material whose wear resistance is greater than that of a material of which said trailing head tip is made. The head tips are held in good sliding contact with the magnetic tape for better recording and reproducing characteristics.

Hiroshi Yohda

Papers

Magnetic head for perpendicular magnetic recording and reproduction

Magnetic head drive which uses independently controlled piezo-electric elements

Magnetic head for azimuth recording in a high density magnetic recording system

Finite element analysis of the interface phenomena between VCR tape and head

Multitrack magnetic head assembly for scanning a magnetic tape with a plurality of magnetic head tips