Tdk Corporation

Daikin Industries, Ltd.

The University of Tokyo

Japan Society for the Promotion of Science

Koichi Kitazawa

Shoji Tanaka

Satoshi Maruyama

Jun Nakagawa

Satoshi Koyama

Kazuo Okamura

Tsunehisa Kimura

Masafumi Yamato

Shinichi Yamashita

Shogo Mamada

Hidenoir Takagi

Utako Endo

Tomoji Kawai

Takuro Homma

Noriyuki Hirota

Hiroharu Sugawara

Under a magnetic field gradient, solid particles floating and/or sinking in a supporting liquid (most suitably a paramagnetic one) are levitated or anti-levitated at different locations depending on their densities and diamagnetic susceptibilities.

Method for separation of plastic mixtures based on magneto-archimedes levitation

The interface between two nonmagnetic fluids, typically liquid layers, in contact with each other is changed by applying a magnetic field thereto. The interface is raised or depressed into an upward or downward convex shape.

Material interface changing method

The disclosed superconductive material has a characteristic in accordance with which electrical resistance disappears at a temperature of at least more than the boiling point of 20.3.degree. K. (-252.7.degree. C.) of liquid hydrogen and relates to La-Ba-Cu-O series superconductive material. Said superconductive material consists essentially of a composition having the formula

Superconductive material

A bismuth system oxide superconductor comprising the 110 K phase is effectively prepared by a process comprising the steps of mixing a bismuth compound, a strontium compound, a calcium compound, a copper compound and optionally a lead compound, optionally provisionally sintering the mixture, and sintering the mixture.

Bismuth system oxide superconductors and preparation thereof

Growing community of inventors

Tokyo, Japan

Koichi Kitazawa