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7572754 |
High temperature superconductor material of BSCCO system and starting composition therefore
A high temperature superconductor material of BSCCO-family is provided wherein parts of Sr of the superconducting phases is substituted by Ba.
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7541313 |
Method for producing MgB2 superconductor
A alloy (Mg—X) of metal (X) and Mg in a liquid phase is made to react with B in a solid phase at a low temperature to manufacture a superconductor, which contains a large amount of MgB 2 ...
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7132388 |
High-temperature oxide superconductor
The present invention provides a high-temperature oxide superconductors, which comprises an oxide expressed as (Bi 1-x A x )—B—C—Cu oxide (where, A is Sb and/or AS; B and C are elements...
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6894006 |
Method for forming bismuth-based superconducting ceramics
A method for reducing the concentration of non-superconducting phases during the heat treatment of Pb doped Ag/Bi-2223 composites having Bi-2223 and Bi-2212 superconducting phases is disclosed. A...
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6855670 |
Superconducting bismuth-strontium-calcium-copper oxide compositions and process for manufacture
Compositions having the nominal formula
Bi a Sr b Ca c Cu 3 O x
...
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6812191 |
Superconducting bodies made of zinc-doped copper oxide material
Superconductive bodies composed of cuprate material having a very critical current density with outer magnetic fields of up to 5 tesla when the bodies have a content of zinc cations. The bodies can...
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6809042 |
Oxide superconductor thick film and method for manufacturing the same
The present invention provides an oxide superconductor thick film which is formed on a substrate or a board and has a high Jc and Ic and a method for manufacturing the same. Predetermined amounts...
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6794337 |
Superconducting colloids, superconducting thin layers produced therefrom, and processes for producing them
The present invention relates to a superconducting colloid prepared by an exfoliating multi-layered superconductor, represented by the formula Bi 2 Sr 2 Ca m−1 Cu m O 2m+4+δ (wherein, m is 1, 2...
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6784138 |
Critical doping in high-Tc superconductors for maximal flux pinning and critical currents
A method for maximising critical current density (J c ) of high temperature superconducting cuprate materials (HTSC) which comprises controlling the doping state or hole concentration of the...
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6767866 |
Selective reduction type high temperature superconductor and methods of making the same
Proposed are a selective reduction type high temperature superconductor and methods of making the same, the superconductor having a pair of charge supply layers each formed of a Cu1-xMx surface (...
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6686319 |
Metal oxide materials
The invention provides certain novel metal oxide materials which exhibit superconductivity at elevated temperatures and/or which are useful in electrode, electrolyte, cell and sensor applications,...
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6677278 |
Pb-Bi-Sr-Ca-Cu-oxide powder mix with enhanced reactivity and process for its manufacture
An Oxide Precursor Powder from the Pb—Bi—Sr—Ca—Cu—O 2223 System can be produced by heat treating powder, produced using the Spray Pyrolysis Process as described in: GB2210605 or EP0681989...
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6653259 |
Fabrication of large bulk high temperature superconducting articles
A method of fabricating large bulk high temperature superconducting articles which comprises the steps of selecting predetermined sizes of crystalline superconducting materials and mixing these...
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6602622 |
Superconducting parts, manufacturing method thereof and dielectric resonator
A dielectric ceramic oxide substrate in combination with superconducting film containing Ba can be used to form a dielectric resonator which has a high no-load Q factor at a high frequency and...
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6569360 |
Method of preparing metal matrix composite with textured compound
The present invention provides a generic method of preparing a metal matrix composite with a textured compound. A “roller-skate” structure starting powder with a mixture of plate-like particles...
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6525002 |
Textured high-temperature superconductors
An oxide superconductor includes a textured superconducting material including an array of defects with a neutron-fissionable element, or with at least one of the following chemical elements:...
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6482775 |
Oxide superconductor
An oxide superconductor consisting of an oxide which comprises, as constituent metal elements, bismuth, lead, strontium, calcium and copper having a molar ratio of lead to bismuth of at least...
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6444620 |
High temperature superconductor having low superconducting anisotropy and method for producing the superconductor
A high-temperature superconductor having low superconducting anisotropy includes a two-dimensional layered structure of crystal unit cells each consisting of a pair of superconducting layer and...
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6306351 |
Nitrogen oxides detection method, and sensor element for detection of nitrogen oxides
The present invention relates to a nitrogen oxide detecting element. Although there has been a demand for effecting detection of a nitrogen oxide by using a semiconductor type gas sensor, no...
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6300284 |
Copper-based high-temperature superconducting material
A copper-based high-temperature superconducting material includes a carrier supply layer overdoped with carriers; and a superconducting layer comprised of at least three CuO 2 layers that are...
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6276048 |
Method of producing oxide superconductor
A method of producing a Bi--Pb--Sr--Ca--Cu oxide superconductor by thermally treating raw material comprises steps of performing first plastic deformation on the raw material, performing first heat...
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6265019 |
Process of increasing the critical temperature Tc of a bulk superconductor by making metal heterostructures at the atomic limit
A method of forming Supercondtuctors with high critical temperature is described in which heterostructures at the atomic limit are realized artificially by molecular beam epitaxy, sputtering,...
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6251530 |
Thin-film of a high-temperature superconductor compound and method
A thin-film of a high temperature superconducting compound having the formula M 1 -x CuO 2 -y, where M is Ca, Sr, or Ba, or combinations thereof, x is 0.05 to 0.3, and x>y. The thin film has a T...
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6216333 |
Oxide superconductor current lead and method of manufacturing the same
An oxide superconductor current lead provided with a rod-like or pipe-like oxide superconductor, at each of end parts of which a metallic electrode is formed. In this oxide superconductor current...
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6043198 |
High-T.sub.c superconductor or precursor material for the oxide-powder-in-tube method (OPIT)
The present invention relates to a process for preparing a high-T c superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi,...
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5962373 |
Method for producing mixed metal oxide compounds
A precursor is made from a plurality of materials having different vapor pressures. The precursor and a source material are placed in a closed heat treatment furnace. The source material is...
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5916697 |
Multilayer material and device comprising this material
A material formed as a film comprised of monomolecular layers (2,3,4,5) stacked on a substrate (1), wherein said film includes at least one first set (R) of layers which form an electric charge...
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5912210 |
Enhancement of persistent currents in high TC superconductors
There is disclosed herein an invention for increasing the current carrying capability of high-Tc superconductor materials. The inventive method includes irradiating such superconductors with light...
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5882536 |
Method and etchant to join ag-clad BSSCO superconducting tape
A method of removing a silver cladding from high temperature superconducting material clad in silver (HTS) is disclosed. The silver clad HTS is contacted with an aqueous solution of HNO 3 followed...
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5874383 |
Tibibacacuo based superconductors
A high temperature superconductor system having the single phase composition TlBiBaCaCuO. The system exhibits a T c of at least 116 K.
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5863867 |
Fine-particle bi-sr-ca-cu-o having high phase purity made by chemical precipitation and low-pressure calcination method
In accordance with the invention a process is provided for achieving a phase-pure BSCCO or lead doped BSCCO powder or precursor of the 2201, 2212 or 2223 phase. In this process a cation solution is...
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5851954 |
Superconducting oxide-based composite material
A composite based on a superconducting oxide having a high critical temperature, characterized by the fact that it is constituted by glass and said oxide, the glass being such that its vitreous...
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5849672 |
Oxide superconducting material, process for preparing the same and applications thereof
Novel superconducting oxide material containing compound oxide having a composition represented by the formula: (Tl 1 -x Bi x ) 1 -p α p ! q Sr y Ca z Cu v O w in which "α" is at least...
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5814585 |
Bi(Pb)SrCaCuO superconductors
The invention relates to a spray pyrolytic process for the preparation of multi-element metal oxide powders useful as precursors of high temperature superconductor ceramics. Aerosols of aqueous...
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5810984 |
Nitrogen oxide sensor and method of manufacturing the sensor
A nitrogen oxide sensor and a method of manufacturing the sensor are disclosed. The sensor has a gas detecting portion including sensitive material having electric property thereof subject to...
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5776862 |
Oxide superconductor and process of producing the same
The hole density of an oxide superconductor having holes as carriers is higher than the hole density to bring the highest value of the superconductivity critical temperature Tc thereof, and it can...
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5716909 |
Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings
Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings, which comprises heating the pure-phase 2212 phase of a Bi-Sr-Ca-Cu-O ceramic molding under pure oxygen or...
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5674814 |
Synthesis of increased-density bismuth-based superconductors with cold isostatic pressing and heat treating
The present invention is directed to a process for producing high temperature superconducting ceramic materials. More particularly, the present invention is directed to a process that enhances the...
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5670434 |
(Bi,Pb)SrCaCuO precursor material for the oxide powder in tube method (OPIT)
Process for preparing a high-T c superconductor as a precursor material for the oxide-powder-in-tube method (OPIT). The present invention relates to a process for preparing a high-T c ...
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5665662 |
High-temperature superconductor
A high-temperature superconductor material based on the Bi--Sr--Ca--Cu--O system has the nominal composition: (Bi 1 -u Pb u ) 2 (Sr 1 -x-y Ca x Bi y ) 4 Cu 3 O 10 +d (d=delta) wherein...
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5661114 |
Process of annealing BSCCO-2223 superconductors
A method for preparing a BSCCO-2223 oxide superconducting article includes annealing an oxide superconductor article comprised of BSCCO-2223 oxide superconductor at a temperature selected from the...
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5627140 |
Enhanced flux pinning in superconductors by embedding carbon nanotubes with BSCCO materials
Enhanced flux pinning in superconductors is achieved by embedding carbon nanotubes into a superconducting matrix. The carbon nanotubes simulate the structure, size and shape of heavy ion induced...
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5618776 |
Yttrium or rare-earth substituted metal oxide materials
The invention provides certain novel metal oxide materials which exhibit superconductivity at elevated temperatures and/or which are useful in electrode, electrolyte, cell and sensor applications,...
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5614472 |
Spray-pyrolysis process of preparing superconductor precursors
The invention relates to a spray pyrolyric process for the preparation of multi-element metal oxide powders useful as precursors of high temperature superconductor ceramics. Aerosols of aqueous...
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5569641 |
Synthesis of Bi.sub.1.8 Pb.sub.0.4 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x superconductor
Two-powder processes for the synthesis of superconducting (Bi, Pb)-2223/Ag-clad wires by the oxide-powder-in-the-robe are provided. The first precursor powder, of nominal stoichiometry CaCuO x , is...
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5565414 |
Substituted superconductive Bi-Sr-Ca-Cu oxide and Bi-Sr-Ca-Ln-Cu oxide compositions
A metal oxide is provided which is represented by the compositional formula : (Bi 1 -x A I x ) 2 (Sr y Ca 1 -y-z A II z ) p (Cu 1 -r A III r ) q O δ wherein 0≤x≤0.5, 0.3≤y≤0.7,...
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5525581 |
Ceramic superconductor having a heterogeneous composition distribution and method of preparing the same
A Bi--Sr--Ca--Cu--O ceramic superconductor contains 0112 phases which are finely dispersed in a 2212-phase matrix with its c-axis oriented perpendicular to a growth direction. A method of preparing...
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5523284 |
Process for preparing a bulk textured superconductive material
In accordance this invention, there is provided a process for making a bulk superconductive material. In the first step of this process, a diffusion couple is formed from superconductor oxide and...
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5508252 |
Bi oxide superconductors
A substance which has a Cu--O plane containing crystal structure in its unit cell and which is called a Bi oxide superconductor consisting essentially of Bi, Sr, Ca, Cu, and O. Not only part of Bi...
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5506196 |
Magnetic material having superconductive properties and a method of preparation of the same
A super conducting material is disclosed which exhibits super conducting properties at higher temperatures than known so far. The super conducting by the invented materials is exhibited at...
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