Abstract: A stabilized carbon cluster conducting material comprising (i) a core comprising a conducting or superconducting carbon cluster and (ii) a sheath covering the core; a device comprising a substrate having thereon a film of a conducting or superconducting carbon cluster covered with a protective film capable of substantially preventing permeation of oxygen and water in the atmosphere; and processes for producing the stabilized carbon cluster conducting material and the device.
Type:
Grant
Filed:
June 7, 1995
Date of Patent:
June 3, 1997
Assignee:
Sumitomo Electric Industries, Ltd.
Inventors:
Nobuyuki Okuda, Takashi Uemura, Yoshinobu Ueba, Koji Tada, Kengo Ohkura, Hirokazu Kugai
Abstract: Circuit board devices are provided based on use of high temperature superconducting ceramic polymers comprising high temperature superconducting ceramic powders distributed in electrically insulative organic polymers which are thermosetting by reaction of a two-part liquid mixture or by catalytic or photoinitiation of a one-part liquid. The ceramic domains transmit their superconductivity across the insulating barriers of organic polymers enabling formation of superconductive lines and superconducting bonds to electronic devices to be adhered to circuit boards, and providing superconducting circuitry.
Abstract: An organic super-conductive material and a process for producing the same are disclosed, the material comprising a polymer having dispersed therein an organic super-conductive substance comprising an electron donor and an electron acceptor.
Abstract: An organic superconductive material and a process for producing the same are disclosed, the material comprising a polymer having dispersed therein an organic superconductive substance comprising an electron donor and an electron acceptor.
Abstract: An organic thin film and process for making the same, having electroconductivity, semiconductivity or superconductivity. The film is made of vapor-deposited bisethylenedithiatetrathiafulvalene (BEDT-TTF) by heating BEDT-TTF at a pressure of 10.sup.-2 Torr or below and at a temperature not higher than 260.degree. C. The temperature of the substrate on which the vapor is deposited is held at a lower temperature than the vapor. A thin film produced under these temperature and pressure conditions contains substantially no decomposition product. The electroconductivity of the film can be adjusted by selecting the substrate used for vapor-deposition of the film and the electron acceptor used as a dopant of the film. In order to achieve a vapor-deposited film with a high degree of orientation, silicon wafer is preferably used as a substrate for the film.
Abstract: A method for making a superconducting fullerine composition, includes reacting a fullerine with an alloy, and particularly reacting C.sub.60 with a binary alloy including an alkali metal or a tertiary alloy including two alkali metals in the vapor phase. Also, a Cesium-doped fullerine high T.sub.c superconducting composition has the formula Cs.sub.x C.sub.60, and particularly Cs.sub.3 C.sub.60. Also, a homogeneous bulk single phase high T.sub.c superconducting composition has the formula (Rb.sub.x K.sub.1-x).sub.3 C.sub.60.
Type:
Grant
Filed:
July 16, 1991
Date of Patent:
March 23, 1993
Assignee:
The President and Fellows of Harvard College
Abstract: More storage stable solutions comprising an organic solvent containing a soluble copper amino alkoxide are disclosed. The compound is of the formula ##STR1## where and R is lower alkyl such as methyl or ethyl.
Abstract: Copper alkoxy alkoxides of the formula CuOR or Cu(OR).sub.2, where R is derived from an alkoxy alkanol of from 3 to 8 carbon atoms, are superconducting ceramic precursors. Compositions containing these alkoxides solubilized in an organic solvent, such as toluene, can be prepared by the additional use of a barium alkoxide solubilization agent.
Type:
Grant
Filed:
December 7, 1987
Date of Patent:
July 11, 1989
Assignee:
Texas Alkyls, Inc.
Inventors:
Andrzej M. Piotrowski, Dennis B. Malpass
Abstract: Metal oxide superconductors of the yttrium-barium-copper type (YBa.sub.2 Cu.sub.3 O.sub.4 type) can be formed by precipitation from an aqueous solution of the salts of the metals using an oxalate precipitation reagent under basic pH conditions (e.g., at least 11) to form a fireable precursor only partly in the form of the oxalate salts of these metals.