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WO/1990/012408 |
An oxide superconductor wire obtained by giving compressive prestrain (3, 7, 11) to an oxide superconductor layer (1) in the lengthwise direction thereof. Even when the oxide superconductor wire is bent, very little tensile force is exer...
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WO/1990/012425 |
A method is described wherein different layers can be applied to substrates at a low temperature (about 400°C) wherein interactions, that is, diffusion or reactions, between substrate and layers to be applied thereon are avoided as far ...
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WO/1990/011260 |
A massive, oxide ceramic superconductor containing copper in the crystal lattice is composed of essentially parallel, intergrown crystals. The superconductor also contains per 100 g copper between 0.04 and 0.5 mol of CuF¿2? or KF. A sin...
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WO/1990/009961 |
A process for preparing a superconducting phase having the formula Ln2-xCexCuO4-y, where Ln is Pr, Nd, or Sm by forming an aqueous soltuion of nitrates of Ln, Ce and Cu, removing the aqueous phase from the solution by evaporation or spra...
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WO/1990/008389 |
In order to obtain a ceramic-type superconductive wire, a bulky ceramic-type superconductor or a precursor thereof that is pretreated such that the crystalline structure is oriented is charged into a metallic pipe, subjected to the worki...
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WO/1990/007591 |
An object of this invention is to provide a method for preparing a thin film of an oxide superconductor having high crystallinity and good quality and a new single crystal base material adapted for that method to afford a good epitaxial ...
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WO/1990/006286 |
A superconducting oxide is exposed to ozone. In one embodiment, the oxide is cooled to the superconducting state before exposure to ozone. The oxide may also be thermally cycled into and out of the superconducting state before exposure t...
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WO/1990/004856 |
A composite conductor incorporating a region of polycrystalline material capable of exhibiting superconductivity has an elongate grain structure (12) comprising grains having regions of relatively low critical current therebetween and fu...
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WO/1990/004857 |
Superconducting structures are composed of thin film of Ba-Y-Cu-O superconductor epitaxially deposited on a crystal substrate of SrLaA1O, SrLaGaO4, SrPrGaO4, SrNdGaO4, SrSmGaO4, SrEuGaO4, CaLaGaO4, CaPrGaO4, or CaNdGaO4.
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WO/1990/003265 |
The present invention provides a method of depositing passivation layers on the surface of a superconducting ceramic oxide comprising employing the techniques of activated chemical vapor deposition and molecular beam deposition to apply ...
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WO/1990/002715 |
Superconducting ceramic articles such as those represented by the general formula YBa2Cu3O7-x where 0
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WO/1990/003047 |
A composition and a method of preparating a composition of the formula R2Q4Cu7Ox, where R is a rare earth ion or a combination of rare earth ions Y, Yb, La, Eu, Gd, Tb, Dy, Ho, Er, Tm, or Lu, and Q is Bg or Ba combined with either Sr or ...
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WO/1990/002215 |
A low-temperature method is provided to prepare a superconductive ceramic oxide comprising contacting the surface of a heated substrate with ozone while evaporating the other components of the superconductive ceramic oxide onto said surf...
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WO/1990/001461 |
Compositions having the nominal formula Tle Pba Cab Src Cud Ox wherein a is from about 1/10 to 3/2, b is from about 1 to 4, c is from about 1 to 3, d is from about 1 to 5, e is from about 3/10 to 1, x = (a + b + c + d + e + y) where y is...
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WO/1990/001809 |
Superconducting Ba-Y-Cu-O ceramic thin film is epitaxially deposited on a crystal substrate of LaAlO3, LaGaO3, PrGaO3 and NdGaO3.
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WO/1990/001218 |
Synthetic superconductors adapted for superconduction at temperatures substantially above those temperatures near absolute zero where conventional superconduction has been observed. The superconductors comprise alternating and spaced con...
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WO/1989/012914 |
A process for producing an optimally crystal-oriented superconducting layer by the further heating (14) of the material of the layer (2) which has not yet been crystallised to or beyond the melting point TS. Crystal-oriented crystallisat...
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WO/1989/012030 |
A technique for increasing the critical temperature, critical magnetic field, and maximum current density of any of a range of already known superconducting materials. The invention contemplates forming a composite structure having super...
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WO/1989/012028 |
An oxide superconductive material of a structure wherein RE2BaCuO5-phase particles of 20 mum or less in diameter are dispersed in an REBa2Cu3O7-y phase (wherein RE represents a rare earth element including Y) is disclosed. This supercond...
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WO/1989/011458 |
The invention relates to an improvement in a method of forming deposits of superconducting ceramics. Generally, such ceramics are formed by electrodepositing a mixture of metals of the type and in proportions sufficient to be oxidized in...
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WO/1989/010633 |
A superconductive conductor or cable comprising a core (2), which comprises at least one string of a ceramic, superconductive material, and where the core (2) is encapsulated by a metal cap (1). In order to manufacture a conductor or a c...
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WO/1989/008929 |
Superconducting material of the Bi(Pb)Sr(Ca)-CuOx system with one phase in which the perovskite cells have a 5- or 8,7-fold superlattice.
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WO/1989/008930 |
Compositions containing a crystalline phase of the formula Tl2Ba2CuO6+x, wherein x is from 0 to 0.5. Processes for manufacturing such compositions and for using them are disclosed.
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WO/1989/008330 |
Polycrystalline high-Tc superconductors of general formula MmEeROx, composed of essentially crystallographically oriented granules, in which M is at least a trivalent element, such as a lanthanide, E is at least a divalent element, such ...
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WO/1989/007086 |
Compositions containing a phase having the formula LA2-xNaxCuOz, wherein x is about 0.1 to about 0.3 and z is about 3.8 to about 4.2 are superconducting. Processes for manufacturing such compositions and for using them are disclosed.
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WO/1989/007344 |
New composite material comprising a petrowskite-type, mixed-valency copper oxide phase deficient in oxygen, in contact with a nitride phase. Application to electrical and electronic circuits.
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WO/1989/006864 |
Chevrel phase powders are compounds of lead, molybdenum and sulphur (PbMo6S8). Additives composed of a metal, a mixture of several metals and/or a metal alloy, all of which have a low melting point less than the heat-treatment temperatur...
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WO/1989/006440 |
A wire structure according to the present invention has a buffer layer between an insulating layer and a superconducting ceramic wire body. Since this buffer layer does not chemically react with the superconducting ceramic wire body at a...
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WO/1989/006441 |
In the method of forming superconducting wires according to the present invention, a wiring pattern is formed by the lift-off method after depositing a raw material on a masking layer. This enables a masking layer having a fine wiring pa...
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WO/1989/006053 |
In a known process, oxide powders derived from the four-component systems yttrium-barium-copper-oxygen or lanthanum-strontium-copper-oxygen are mixed, pressed, sintered, ground and then heat-treated to produce a superconducting material ...
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WO/1989/004816 |
In preparing a target material for a superconducting film by hot press process, a vacuum atmosphere is replaced with an inert gas atmosphere containing 0.1 to 10 % by volume of oxygen and having a pressure of 1 to 100 Torr at a predeterm...
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WO/1989/002872 |
A paste fur use in printing a superconductive film on a substrate, which comprises a first powder composed of composite oxide(s) and a second powder composed of carbonate(s) of an alkaline earth metal. The composite oxide contains at lea...
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WO/1989/002871 |
The invention relates to a process for the preparation of multi-element metal oxide powders useful as precursors for the preparation of high-temperature superconducting ceramics, characterized by mixing metal salt solutions in the stoich...
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WO/1989/002657 |
An R-A-Cu-O based superconducting ceramics is fabricated as follows. A starting powder provided is molded and then sintered to form a molded body sintered. The hot sintered molded body is subjected to cooling under specified cooling cond...
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WO/1989/002656 |
A sheathing material is disclosed for superconducting wires deformed by stretching or a similar process during their manufacture, and of which the superconducting material is composed of an oxide the superconductivity of which deteriorat...
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WO/1989/002483 |
In one embodiment this invention provides a process for decreasing the resistivity of an electrical conductor. The process involves the application of high temperature and an external field to a conductor to induce a current flow and phy...
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WO/1989/001924 |
A R-A-Cu-O based superconducting ceramics is fabricated as follows. First, a starting powder is provided and molded to form a molded body. Subsequently, the molded body is sintered in an oxygen-poor atmosphere with the partial pressure o...
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WO/1989/001706 |
A dispersion of ceramic superconductor particles is distributed in a matrix of a continuously connected nonferromagnetic metal. This bi-phase composite permits the material to exhibit the mechanical and thermal properties of metal and ye...
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WO/1989/001239 |
A method of fabricating a superconducting ceramic based material in which a constituent of the ceramic microstructure which gives the final product its superconducting properties is replaced by a halide prior to thermomechanical processi...
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WO/1989/000343 |
A device made of superconducting material comprises in particular, on a substrate of conducting material which is at least an ionic conductor of oxygen, or layer of superconducting material. The process provides that the adjustment of th...
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WO/1988/010323 |
A thin superconductor film is formed by mixing a gas of a complex compound between an alkaline earth metal and a partially halogen-substituted organometallic compound, a gas of an organometallic compound (halide) of a group IIIa element,...
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WO/1988/010515 |
There is disclosed an improved process for preparing a superconducting composition having the formula MBa2Cu3Ox wherein M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; x is from about 6.5 to about...
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WO/1988/010499 |
A thin film of an oxide superconductor is formed by mixing a gas of an organometallic compound of an alkaline earth metal, a gas of an organometallic compound (halide) of a group IIIa metal, and a gas of an organometallic compound (halid...
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WO/1988/010009 |
There is disclosed an improved process for preparing a superconducting composition having the formula MwAzCuvOx, wherein M is selected from the group consisting of Bi, Tl, Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; A is at least one a...
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WO/1988/009701 |
There is disclosed an improved process for preparing a superconducting composition having the formula MBa2Cu3Ox wherein M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; x is from about 6.5 to about...
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WO/1988/009555 |
There is disclosed an improved process for preparing a superconducting composition having the formula MBa2, Cu3Ox, wherein M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; x is from about 6.5 to ab...
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WO/1988/009311 |
The method relates to obtaining superconducting materials, in particular, compounds of formula (I) where Y = 6-8, Ln is Y, -Sc or a lanthanoid; MII is Ba, Ca, Sr; MI is Cu; Cu + Ag, or of formula (II) where x = 1-2 and consists in a loca...
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WO/1988/009061 |
The composition and valence state (and therefore superconductivity) of a superconducting material (10) is adjusted and maintained by the electrochemical addition or subtraction of an enhancement material from or to a donor or receptor co...
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WO/1988/008618 |
The final step of a method of making a superconducting composite comprising an outer supporting casing (10, 31) of a non-superconducting inert material having active high temperature superconducting material (14, 27) such as YBa2Cu3O7 in...
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WO/1988/008338 |
A method of preparing a selected device geometry (10) of a superconducting compound. A high critical temperature superconducting compound is prepared from a starting metal composition (14) which is formed in a predetermined base geometry...
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