Nexans

Centre National De La Recherche Scientifique

Mark O Rikel

Jürgen Ehrenberg

Arnaud Allais

Joachim Bock

Tristan Caroff

Jean-Louis Soubeyroux

Philippe Odier

Stéphanie Morlens

Cyril Millon

Carmen Jimenez

Florian Steinmeyer

Steffen Elschner

Dirk Isfort

Andre Wolf

Christian-Eric Bruzek

André Wolf

Jurgen Ehrenberg

Sarah Petit

A precursor material for the preparation of superconductors based on Bi2Sr2Ca1Cu2O8+&#x3b4; wherein the precursor material which is as close to equilibrium state as possible, i.e., has less than 5% in average 2201 intergrowths in the 2212 phase; in particular, the present invention relates to a precursor material, which is converted to the final conductor by partial melt processing, as well as to a process for the production of the precursor material and the use of the precursor material for preparing superconductors based on Bi2Sr2Ca1Cu2O8+&#x3b4;.

Precursor material for bi-based oxide superconductor and process for preparing such material

A multilayer superconducting wirewith essentially round cross sectional area where the outer surface of the round wire is provided with a high temperature superconductor layerand where at least the high temperature superconductor layeris fabricated as a spiral running along the length of the superconductor wirein parallel lanes

Superconducting wire with low AC losses

A coated conductor comprising an improved buffer layer architecture where the buffer layers are obtainable by chemical solution deposition and where the buffer layers essentially adopt the degree of texture of the substrate.

Coated conductor with improved grain orientation

A coated conductor with a substantially round cross section has a high temperature superconductor layer which is sandwiched between an inner substrate layer and an outer substrate layer to place the high temperature superconductor layer in the region of neutral strain axis.

Coated conductor

Method of depositing a layer of oxide of at least one metal element on a curved surface of a textured metal substrate,

Method for depositing oxide thin films on textured and curved metal surfaces

Method of depositing a buffer layer of epitaxial metal oxide on a functionalised surface of a textured metal substrate, said method comprising the following steps:

Method for depositing oxide films on textured metal pipes

A coated conductor is provided with improved electrical connection between the conductive layers such as the high temperature superconductor layer and a metal protection layer applied onto the high temperature superconductor layer and the substrate. A method includes obtaining such electrical connection, in particular, creating a coated conductor wherein the substrate is a core covered with the layers all around its periphery.

High temperature superconductor, in particular improved coated conductor

A process for preparing a shaped substrate suitable in the production of coated conductors which process allows the deformation of a textured substrate onto which a textured buffer layer has been already grown.

Process for the preparation of a shaped substrate for a coated conductor

Coated conductors have a substrate, a high temperature superconductor layer and at least one or more buffer layers, wherein at least one of the buffer layers is a template for biaxially orienting the high temperature superconductor layer wherein the template is composed of a polycrystalline film consisting of a non-stoichiometric material having the nominal chemical formula ABOwith B being at least one selected from Zr, Hf, Sn, Pb and Ti; A being at least one selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Y, Tm, Yb and Lu; and x&#x2260;0; and wherein the substrate is textured.

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Huerth, Germany

Mark O Rikel