Hitachi, Ltd.

Marutaka-kogyo Inc.

Hitachi Chemical Company, Ltd.

Other

Hitachi Cable, Inc.

Kazumasa Takagi

Tokuumi Fukazawa

Yoshihiro Shiroishi

Sadao Hishiyama

Tomoyuki Ohno

Hiroyuki Suzuki

Yoshibumi Matsuda

Masaki Ohura

Norikazu Tsumita

Yotsuo Yahisa

Yoshinobu Tarutani

Haruhiro Hasegawa

Takaaki Shirakura

Noriyuki Shige

Ushio Kawabe

Masahiko Hiratani

Toshikazu Nishino

Toshiyuki Aida

Kazuo Saitoh

Katsuki Miyauchi

Toshio Kobayashi

Kenzo Susa

Eizou Takagi

Masaaki Futamoto

Yukio Honda

Yukio Okamoto

Takeo Yamashita

Shinji Takayama

Keiko Kushida

Sadanori Nagaike

Tetsu Oi

Akira Tsukamoto

Mitsuo Suga

Yasushi Kitazaki

Makoto Saito

Mutsuko Hatano

Hisaaki Ochi

Yoshimi Kawanami

Norio Ohta

Michiya Okada

Noriyuki Kumasaka

Yoshiyuki Hirayama

Masaaki Hayashi

Katsuhiro Kuroda

Takahiko Kato

Teruaki Takeuchi

Kazuetsu Yoshida

Hiroyoshi Matsumura

Hiroshi Takeuchi

Makoto Sano

Takao Nakamura

Yutaka Misawa

Katsuzo Aihara

Hiroshi Morita

Yoshihide Wadayama

Jiro Kuniya

Futoshi Furuta

Kazuyuki Nagatsuma

Hideaki Nakane

Takanobu Takayama

Yuuichi Madokoro

Shinya Matsuoka

Masahiro Ogihara

Mitsuru Ishii

Masae Kiryu

Yoshio Gobara

Kazushige Imagawa

Uki Kabasawa

Seigo Kishino

Masayuki Asakura

Tatsuya Ida

Yoshihisa Soutome

Shinichiroh Saitoh

Shinichiro Saitoh

Suzuki Hiroyuki

[Problem] A mortar peeling method which can keep a sound generated during a peeling work to an allowable quiet sound and can peel a mortar off a concrete framework smoothly. [Solution] In a mortar peeling method, by gradually extending a piston rodof a hydraulic jackin a mortar peeling deviceA forward in one direction, a cutteris gradually advanced forward in one direction so as to execute a mortar peeling process of peeling a mortarwith a predetermined thickness off a concrete frameworkby using the cutter. In the mortar peeling method, after the piston rodof the hydraulic jackis extended forward in one direction and the mortaris peeled, by retreating the piston rodrearward in one direction, a session of the mortar peeling process is completed.

Mortar peeling method

A mounting base (A) that shortens construction time and reduces cost is formed from a metal foundation (), a metal cover (), height-adjusting bolts (), support bolts (), and mortar (). In the base (A), the first fixed ends () of the bolts () are inserted into support bolt insertion holes () formed in a metal plate () and are fixed to the metal plate () with nuts (), and the second fixed ends () of the bolts () are fixed to a concrete slab () with nuts (). The portion of the first fixed ends () of the bolts () which extends between the metal plate () and the top surface of the concrete slab () is integrated with the mortar () filled into the space (), and the metal cover () covers the opening () at the top of a metal tube ().

Mounting base

A mounting base is formed from a metal foundation, height adjustment bolts for adjusting the height dimension of the foundation, support bolts inserted into support bolt insertion holes, a metal cover installed on the foundation, and mortar filling the space between the foundation and the upper surface of a concrete slab. In the base, the first fixed ends of the bolts are inserted into insertion holes formed in a metal plate and are fixed to the metal plate with nuts, and the second fixed ends of the bolts are fixed to a steel beam with nuts. The portion of the first fixed ends of the bolts which extends between the metal plate and the top surface of the concrete floor is integrated with the mortar filling the space, and the metal cover covers the opening at the top of a metal tube of the foundation.

The invention provides nuclear magnetic resonance equipment realizing improved sensitivity of a probe for receiving a free induction decay (FID) signal in nuclear magnetic resonance (NMR) spectroscopy in a high frequency band of 600 MHz or higher. By manufacturing a solenoid coil of a higher filling factor by using a superconductor of extremely low resistance to high frequency current, sensitivity is increased. A superconducting thin film made of magnesium diboride (MgB) formed on a donut plate-type substrate is disposed so that the film surface becomes parallel with the uniform magnetic field. The object is realized by a probe made by a solenoid coil formed by connecting a plurality of coil parts by capacitive coupling via a normal metal lead.

Nuclear magnetic resonance equipment

A magnetic recording medium for longitudinal recording with a low media noise, a high S/N ratio and high reliabilities in corrosion resistance is disclosed. By making a magnetic layer from a Co-based alloy comprising 1 to 35 at. % of at least one element selected from the group consisting of Pt and Ir, 1 to 17 at. % of at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Ge and Si, except for Si, whose concentration is 1 to 40 at. and 0.1 to 10 at. of oxygen, a magnetic recording medium for longitudinal recording having an inplane coercivity of 1,200 Oe or more and a coercive squares of not more than 0.85 is obtained. A process for producing the magnetic recording medium for longitudinal medium and a magnetic memory apparatus using the magnetic recording medium for longitudinal recording are also disclosed.

Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus

The problem of the disclosed technology is as follows. Although a single flux quantum circuit can fabricate a high-speed sequential circuit with ease, the initialization of the circuit is required for guaranteeing the normal operation of the circuit. However, a prior-art circuit has no initializing function, or requires the restructuring of another logic system. For solving the foregoing problem, one Josephson junction is inserted to a flux quantum storage inductor constituting the existing logic circuit, so that a pulse for performing the circuit initialization is injected to the connection point by means of a comparator.

Superconducting single flux quantum circuit

A superconductor signal amplifier which receives an extremely small high-frequency signal having a frequency of tens of GHz generated in a superconductive circuit, amplifies the voltage of the high-frequency signal without a decrease in frequency, and outputs the thus amplified high-frequency signal from the superconductive circuit. At an output part of a single flux quantum circuit using a flux quantum as a binary information carrier, there are provided a superconductive junction line for flux quantum transmission and a splitter for simultaneously producing two flux quanta from a flux quantum. According to the number of plural series-connected SQUIDs, a plurality of flux quantum signals are generated and input to the plural series-connected SQUIDs so that the SQUIDs are simultaneously switched to a voltage state. In each SQUID pair comprising two SQUIDs, a part of an inductor is shared by the two SQUIDs for reduction in inductance, thereby increasing an output voltage of the series-connected SQUIDs. Furthermore, a magnetic shielding film formed under each SQUID is electrically isolated from ground to prevent a signal delay due to a parasitic capacitance.

Superconductor signal amplifier

A magnetic recording medium including a substrate and a magnetic layer on the substrate which is a Co-based alloy including Pt and/or Ir, including at least one of Ti, Zr, Hr, V, Nb, Ta, Cr, Mo, W, Ge, and Si, and including oxygen. A magnetic memory apparatus including the magnetic recording medium.

Magnetic recording media for longitudinal recording

In a superconductive single flux quantum logic circuit having two superconductive closed loops each comprising a Josephson junction and one or more inductors, a load inductance part is comprised of an inductor and a Josephson junction and two or more means for supplying a signal current are included. The load inductance part is made by one or more inductors and means for applying flux via the inductors is included.

Superconductive single flux quantum logic circuit

Bi-layer oxide ferroelectrics

A magnetic recording medium for longitudinal recording with a low media noise, a high S/N ratio and high reliabilities in corrosion resistance is disclosed. By making a magnetic layer from a Co-based alloy comprising 1 to 35 at. % of at least one element selected from the group consisting of Pt and Ir, 1 to 17 at. % of at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Ge and Si, except for Si, whose concentration is 1 to 40 at. %, and 0.1 to 10 at. % of oxygen, a magnetic recording medium for longitudinal recording having an inplane coercivity of 1,200 Oe or more and a coercive squares of not more than 0.85 is obtained.

A superconducting device low in power dissipation and high in operating speed is fabricated by use of a combination of a superconductor material and a semiconductor material. The superconducting device having a low power dissipation and high operating speed characteristic according to the present invention is suitable for configuring a large-scale integrated circuit.

Superconducting device

Disclosed herein is a superconducting field effect transistor (FET) which has at least an active region formed from a film of oxide normal conductor, a plurality of electrodes formed from a film of oxide superconductor, and a means to control the current which flows between the electrodes through the active region. Having a much greater electrode distance than the conventional superconducting device, it can be produced easily by lithography without resorting to special techniques.

Superconducting field effect transistor with increased channel length

Chemical reactions of superconducting raw materials with active oxygen atoms and their charged particles are accelerated by using at least oxygen plasma in the fabrication process of a superconductive body. Thereby an ionic crystal is grown in a short time, which provides stable superconducting materials of high quality such as high critical temperature and low resistivity. In another aspect, a substrate is irradiated simultaneously with streams of vapor of metal elements, of which a superconductive body is to be composed, and a stream of gas of ions generated in a plasma chamber and film growth is effected while keeping the substrate at a temperature higher than 400.degree. C. to produce a ceramic type superconductive thin film.

Method for fabricating superconducting materials and superconductive

A superconductive element at least comprising first and second superconductive electrodes composed of an oxide superconductor material and a semiconductor film composed of an oxide semiconductor material put between the first and second superconductive electrodes and disposed in adjacent with the first and the second superconductive electrodes, in which the semiconductor film is formed with an oxide comprising rare earth elements other than Pr, Ba and Cu as the main ingredient element or an oxide comprising predetermined amount of rare earth elements other than Pr, predetermined amount of Pr, Ba and Cu as the main ingredient element. Extremely fine size is no more necessary to enable fabrication with the existent fine fabrication technic.

Superconductive switching element with semiconductor channel

Growing community of inventors

Tokyo, Japan

Kazumasa Takagi