Abstract: An information recording and reproducing apparatus, includes: a stacked structure including an electrode layer and a recording layer; a buffer layer added to the electrode layer; and a voltage application unit configured to apply a voltage to the recording layer, produce a phase change in the recording layer, and record information. The recording layer includes a first layer including a first compound having an ilmenite structure represented by AxMyX3 (0.1?x?1.1 and 0.

Abstract: An information recording/reproducing device includes a recording layer, and a recording circuit which records data to the recording layer by generating a phase change in the recording layer. The recording layer includes a first chemical compound having a spinel structure. The recording layer is AxMyX4 (0.1?x?2.2, 1.0?y?2.0), where A includes one selected from a group of Zn, Cd and Hg, M includes one selected from a group of Cr, Mo, W, Mn and Re, and X includes O.

Abstract: A data read/write device according to an example of the present invention includes a recording layer, and means for applying a voltage to the recording layer, generating a resistance change in the recording layer, and recording data. The recording layer is composed of a composite compound having at least two types of cation elements, at least one type of the cation element is a transition element having a “d” orbit in which electrons have been incompletely filled, and the shortest distance between the adjacent cation elements is 0.32 nm or less.

Abstract: An information recording/reproducing device includes a recording layer, and a recording circuit which records data to the recording layer by generating a phase change in the recording layer. The recording layer includes a first chemical compound having a spinel structure. The recording layer is AxMyX4 (0.1?x?2.2, 1.0?y?2.0), where A includes one selected from a group of Zn, Cd and Hg, M includes one selected from a group of Ti, Zr, Hf, V, Nb and Ta, and X includes O.

Abstract: The information recording/reproducing device includes a stacked structure which is comprised of an electrode layer and a recording layer, a buffer layer which contacts with the recording layer and a recording circuit which records data to the recording layer by generating a phase change in the recording layer. The recording layer is comprised of a complex compound having two cations, and one of the cations is a transition element having “d” orbit where electrons are incompletely filled. The recording layer is comprised of CuxAyXz (0.1?x?1.1, 0.9?y?1.1, 1.8?z?2.2), and includes a first chemical compound having a delafossite structure. The buffer layer is comprised of one of M3N4, M3N5, MN2, M4O7, MO2 and M2O5.

Abstract: An information recording/reproducing device according to an aspect of the present invention includes a recording layer, and a recording circuit which records data to the recording layer by generating a phase change in the recording layer. The recording layer includes a first chemical compound having one of a Wolframite structure and a Scheelite structure.

Abstract: A surface acoustic wave chip formed with an inter-digital transducer entirely over a piezoelectric substrate. In the surface acoustic wave chip, the inter-digital transducer is extended to a rim of the piezoelectric substrate, and a partition section is provided all the way to the rim of the piezoelectric substrate to partition an electrode pattern to derive two of the inter-digital transducers.

Abstract: A surface acoustic wave device includes: an IDT electrode formed at a main surface of a piezoelectric substrate, an extraction electrode extracted from the IDT electrode; a surface acoustic wave chip having a metal junction formed along a periphery of the main surface of the piezoelectric substrate; a contact electrode made of an insulating material, connecting to the extraction electrode formed at one main surface thereof; an external electrode formed at the other main surface of the contact electrode; and a cover substrate having a through-hole electrode for connecting the contact electrode to the external electrode. The IDT electrode and the extraction electrode are hermetically sealed in an interior of the space formed by bonding the surface acoustic wave chip to the cover substrate through the metal junction.

Abstract: There is proposed a nonvolatile information recording and reproducing device with low power consumption and high thermal stability. The information recording and reproducing apparatus according to an aspect of the present invention includes a recording layer and a unit for recording information by applying a voltage to the recording layer to generate a state change in the recording layer. The recording layer being configured to include at least a first compound having a hollandite structure.

Abstract: In a method of forming a part of a through-hole for a piezoelectric substrate having an excitation electrode and a leading electrode which are formed on a first surface of the piezoelectric substrate and are made of a thin metal film in order to establish a conductivity, the method includes: blasting a position on a second surface of the piezoelectric substrate corresponding to the leading electrode to form a preliminary hole by boring the piezoelectric substrate in its halfway; etching a bottom of the preliminary hole to form a part of a through-hole through which a part of the leading electrode is exposed; and placing a conductive material in the part of a through-hole, the conductive material contacting the leading electrode from a side of the second surface of the piezoelectric substrate.

Abstract: A surface acoustic wave device includes a surface acoustic wave (SAW) chip and a cover that are bonded in a body by bonding a metal bonding portion of the SAW chip and a metal bonding portion of the cover and bonding extraction electrodes of the SAW chip and connection electrodes of the cover so as to hermetically seal IDT electrodes disposed on a main surface of a piezoelectric substrate of the SAW chip within a space defined between the SAW chip and the cover. The IDT electrodes and external electrodes on an upper surface of an insulating substrate of the cover are electrically connected to each other through conductive materials formed in through-holes.

Abstract: A nonvolatile information recording and reproducing device exhibits low power consumption and high thermal stability. The information recording and reproducing apparatus according to an aspect of the present invention includes a recording layer and a unit for recording information by applying a voltage to the recording layer to generate a resistance change to be caused due to a phase change in the recording layer. The recording layer includes a material having a ramsdelite structure.

Abstract: There is proposed a nonvolatile information recording/reproducing device with low power consumption and high thermal stability. The information recording/reproducing device according to an aspect of the present invention includes a recording layer, and mechanism for recording information by generating a phase change in the recording layer while applying a voltage to the recording layer. The recording layer is comprised one of a Wolframite structure and a Scheelite structure.

Abstract: An information recording/reproducing device according to an example of the present invention includes a first head and a second head each having a conductive region formed of a conductive material, a recording medium having a data area from which data is read by the first head, and a servo burst area from which a servo burst signal is read by the second head, a driver for positioning the first head and the recording medium based on the servo burst signal, and a resistance element for covering a surface of the conductive region of the second head.

Abstract: Manufacturing a piezoelectric vibration device, includes: forming a bonding electrode on a part of a piezoelectric substrate to which a cover makes contact; forming a part defining a through hole to the cover so that a profile of an edge of an opening of the through hole at a first surface of the cover is positioned inside an outer shape of the taking out electrode in a plan view when the cover and the piezoelectric substrate are overlapped; forming a first glass film on the first surface of the cover; forming a second glass film on the first surface of the cover; bonding the first glass film to the taking out electrode as well as the second glass film to the bonding electrode by generating an electric field; and cutting an electrical coupling between the taking out electrode and the bonding electrode after step (e).

Abstract: An information recording/reproducing device according to an example of the present invention includes first and second heads, a recording medium having a data area from which recording data is read by the first head and a servo burst area from which a servo burst signal is read by the second head, a driver which performs positioning of the second head based on the servo burst signal, and a resistor which covers a surface of the servo burst area and does not cover a surface of the data area. The recording data and the servo burst signal are recorded by a pulse signal.

Abstract: An operational state of C-AF processing is judged. If the operational state is judged to not be a focused state, when the operational state is a state of fine adjustment, only a range in a vicinity of a current position of a focus lens is searched, and a focused state is set. When the operational state is a state where the focus lens is being driven to a focus position, only a range in a vicinity of a focus position already been detected is searched, and the focused state is set. When the operational state is a state during searching for a peak, searching is carried out in a current driving direction from a current position of the focus lens, and the focused state is set. When the operational state is none of above states, an entire region is searched, and the focused state is set.

Abstract: A data read/write device according to an example of the present invention includes a recording layer, and means for applying a voltage to the recording layer, generating a resistance change in the recording layer, and recording data. The recording layer is composed of a composite compound having at least two types of cation elements, at least one type of the cation element is a transition element having a “d” orbit in which electrons have been incompletely filled, and the shortest distance between the adjacent cation elements is 0.32 nm or less.

Abstract: An electronic component includes a package having a cavity formed therein by providing an annular protrusion on a substrate as well as having a metallized layer on a bottom surface of the cavity, and an element disposed on the bottom surface of the cavity via the metallized layer and housed in the cavity, wherein the element has an electrode formed on a surface opposite to a surface which touches the bottom surface of the cavity when the element is disposed on the bottom surface, wherein, in the cavity, an internal electrode to be an electrical connecting destination of the electrode on the element is formed at opposed positions with the element between the positions in a first direction, in which the electrode lies between the positions when seen from the top, in such a manner that there is clearance between the internal electrode and the element, and wherein, on the bottom surface of the cavity, an distinction mark, which is distinguished from the metallized layer, is formed at opposed positions with the el

Abstract: In a method of forming a part of a through-hole for a piezoelectric substrate having an excitation electrode and a leading electrode which are formed on a first surface of the piezoelectric substrate and are made of a thin metal film in order to establish a conductivity, the method includes: blasting a position on a second surface of the piezoelectric substrate corresponding to the leading electrode to form a preliminary hole by boring the piezoelectric substrate in its halfway; etching a bottom of the preliminary hole to form a part of a through-hole through which a part of the leading electrode is exposed; and placing a conductive material in the part of a through-hole, the conductive material contacting the leading electrode from a side of the second surface of the piezoelectric substrate.