International Superconductivity Technology Center

Fujikura Limited

Sumitomo Electric Industries, Limited

Hitachi Cable, Inc.

Ishikawajima-harima Heavy Industries Co., Ltd.

Ishikawajima-harima Jukogyo Kabushiki Kaisha

Mitsubishi Cable Industries, Ltd.

The Kansai Electric Power Co., Inc.

Kyocera Corporation

The Furukawa Electric Co., Ltd.

Asahi Glass Company, Limited

Sumitomo Metal Industries, Inc.

Japan Energy Corporation

Railway Technical Research Institute

Adeka Corporation

Yuh Shiohara

Shoji Tanaka

Minoru Tagami

Yasuji Yamada

Teruo Izumi

Kanshi Ohtsu

Masaru Nakamura

Atsushi Kume

Noriyuki Tatsumi

Jiro Tsujino

Masahiro Egami

Yasuo Kanamori

Takashi Sato

Yuichi Nakamura

Koichi Nakao

Yasuo Namikawa

Toshihiko Maeda

Katsuya Hasegawa

Hiroshi Fuji

Atsuya Yoshinaka

Jian-Guo Wen

Takato Machi

Shigenobu Asada

Makoto Kambara

Kengo Ishige

Xin Yao

Akimasa Yajima

Toru Izumi

Hideki Sakai

Koichi Uehara

Noriko Chikumoto

Yutaka Kitoh

Hiromitsu Morimoto

Yasuyuki Hisashi

Tetsuya Minegishi

Tomotaka Goto

Tetsuji Honjo

Yoshitaka Tokunaga

A metal substrate for an oxide superconducting wire, which comprises a polycrystalline metal substrate with a rolled aggregate structure having a {100} plane which is parallel to the rolled surface and a &#x3c;001&#x3e; axis which is parallel to the rolling direction, and an oxide crystal layer comprising an oxide of the polycrystalline metal and formed on a surface of the polycrystalline metal substrate, wherein at least 90% of grain boundaries in the oxide crystal layer have an inclination of 10&#xb0; or less, and at least 90% of the {100} plane of the oxide crystal layer make an angle of 10&#xb0; or less with the surface of the polycrystalline metal substrate.

Method of manufacturing a metal substrate for an oxide superconducting wire

A continuous observation apparatus of magnetic flux distribution in which a long sample containing a superconducting material or magnetic material is transferred to an observation position and magnetic flux is observed sequentially at each of certain areas along a longitudinal direction of the sample is provided. A method of continuously observing magnetic flux by which a long sample containing a superconducting material or magnetic material is transferred to an observation position and magnetic flux is observed sequentially at each of certain areas along a longitudinal direction of the sample is also provided.

Continuous observation apparatus and method of magnetic flux distribution

A control device having control logics that respectively generate operated quantities by simutaneously parallel-processing observed quantities obtained from a controlled object. A switch selectively outputs one of the operated quantities to the controlled object based on instruction data.

Control device having a control logic switching function

The present invention is aimed to provide a means for manufacturing a RE123 system oxide superconductor showing good superconductivity characteristics under atmospheric ambiance. In a method of manufacturing a RE123 system oxide superconductor by melting, cooling and solidifying material including rare-earth elements and a Ba--Cu--O solvent for crystallization such as by the crystal pulling method, examining beforehand the relationship between the melted material composition and the equilibrium liquid-phase composition and the crystal composition of the RE123 system oxide superconductor formed therefrom in atmospheric ambiance, and based on the result of said examination, adjusting the average composition of the material or the composition of the solvent (for example, setting the average composition of the material to an area where the superconductivity phase and the liquid phase coexist in equilibrium, and at the same time adjust the 'Ba/Cu' ratio of the melted material to 3/5-1/1, or adjust the 'Ba/Cu' ratio of the solvent inside the crystal pulling crucible to 3/5-1/1), in order to control the amount of mutual substitution between RE and Ba (control the value of x in RE123 system superconductor RE.sub.1+x Ba.sub.2-x Cu.sub.3 O.sub.7-d to 0-0.05 and the like) for crystallization.

Method of manufacturing oxide superconductors

A composite material is disclosed which includes a substrate, an oriented film provided on a surface of the substrate and formed of a crystal of a Y123 metal oxide of the formula LnBa.sub.2 Cu.sub.3 O.sub.y wherein Ln stands for Y or an element belonging to the lanthanoid and y is a number of 6-7, and a layer of a Y123 metal oxide of the formula LnBa.sub.2 Cu.sub.3 O.sub.y wherein Ln stands for Y or an element belonging to the lanthanoid and y is a number of 6-7 formed on the oriented film.

Composite metal oxide material

A crystal pulling apparatus is designed to generate a thermal gradient across the melt surface to prevent nucleation of stray crystals and production of floating debris to produce a high quality crystal, and has special provisions for observing the growth behavior and crystal dimension measurements. The apparatus includes a cylindrical chamber, a crucible disposed centrally within the chamber, a cylindrical heater surrounding the crucible, an insulation member disposed on the top section of the crucible, a first transparent plate and a second transparent plate for closing the center hole in the insulation member, a pull rod passing through the center hole of the transparent plates, a crystal illumination mechanism, a crystal size determination mechanism and an ambient atmosphere flowing mechanism. The crystal size determination mechanism is provided with a quartz prism, an infrared transmitting filter on a side wall of the chamber, a revolution count circuit, phase angle setting circuit, a CCD camera, an image processing section, and a crystal size determination device having a TV monitor.

Crystal manufacturing apparatus

Method of producing composite metal oxide material

A method of preparing a crystal of a Y-series 123 metal oxide is disclosed, in which a substrate is immersed in a liquid phase which comprises components constituting the metal oxide. The liquid phase contains a solid phase located at a position different from the position at which the substrate contacts the liquid phase. The solid phase provides the liquid phase with solutes which constitute the Y-series 123 metal oxide so that the solutes are transported to the position at which the substrate and the liquid phase contact, thereby permitting the Y-series 123 metal oxide to grow on the substrate as primary crystals.

Method of preparing metal oxide crystal

A composite material comprising a bulky substrate of a Y-series 123 metal oxide crystal, and at least one layer provided on a surface of the substrate and formed of a crystal of a Y-series 123 metal oxide. The substrate may be produced by immersing a seed material in a liquid phase which comprises components constituting the metal oxide. The liquid phase contains a solid phase located at a position different from the position at which the seed material contacts the liquid phase. The solid phase provides the liquid phase with solutes which constitute the Y-series 123 metal oxide so that the solutes are transported to the position at which the seed material and the liquid phase contact, thereby permitting the Y-series 123 metal oxide to grow on the seed material as primary crystals and to obtain the bulky substrate. The layer of a Y-series 123 metal oxide may be formed on the substrate by a sputtering method, a vacuum deposition method, a laser abrasion method, a CVD method or a liquid phase epitaxy method.

Composite material and method of preparing same

A method of pulling a crystal of a metal oxide is disclosed, in which the growth of the crystal is performed in a liquid phase having a composition which is different from the metal oxide and which contains components constituting the metal oxide. The liquid phase is in contact with a solid phase located at a position separated from the position at which the crystal of the metal oxide grows. The solid phase has a composition different from that of the metal oxide and supplies components constituting the metal oxide to the liquid phase.

Growing community of inventors

Chigasaki, Japan

Yuh Shiohara