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A kind of metal-based superconducting tape and preparation method thereof

A technology of superconducting tape and metal base tape, which is applied in the field of superconductors, achieves huge commercial value, reduces preparation costs, and has the effect of simple structure

Active Publication Date: 2022-07-26
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the application, on the one hand, the static FeSe-based superconducting thin film preparation process is still in the exploratory stage, and the critical current density needs to be greatly improved and optimized; on the other hand, up to now, there has been no dynamic preparation of FeSe A report on base superconducting long tapes

Method used

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  • A kind of metal-based superconducting tape and preparation method thereof
  • A kind of metal-based superconducting tape and preparation method thereof
  • A kind of metal-based superconducting tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In this embodiment, the preparation method of the metal-based superconducting tape includes the following steps:

[0052] 1) Iron, selenium and tellurium are mixed in a molar ratio of 1:0.2:0.8 and then ground into powder, and the sieve balance of the powder passing through a 200-mesh sieve is 1%. The ground powder is mixed and compressed into tablets, and packaged. Heating to 500°C in a quartz tube and holding for 10h, sintering at 750°C for 12h, cooling down, and cooling to room temperature to obtain a target.

[0053] 2) Put the prepared target material on the target base of the vacuum coating chamber of the multi-channel pulsed laser deposition system, and simultaneously wrap the metal base tape of C276 Hastelloy material on the unwinding of the vacuum coating chamber of the multi-channel pulsed laser deposition system. In the plate, the vacuum coating chamber is evacuated to a vacuum degree of 4 × 10 -7 Torr.

[0054] 3) Start to use the multi-channel pulsed lase...

Embodiment 2

[0058] In this embodiment, the preparation method of the metal-based superconducting tape includes the following steps:

[0059] 1) Iron, selenium and tellurium are mixed in a molar ratio of 1:0.3:0.7 and then ground into powder, and the sieve balance of the powder passing through a 200-mesh sieve is 1%. The ground powder is mixed and compressed into tablets, and packaged. Heating to 500°C in a quartz tube and holding for 10h, sintering at 750°C for 12h, cooling down, and cooling to room temperature to obtain a target.

[0060] 2) Put the prepared target material on the target base of the vacuum coating chamber of the multi-channel pulsed laser deposition system, and simultaneously wrap the metal base tape of C276 Hastelloy material on the unwinding of the vacuum coating chamber of the multi-channel pulsed laser deposition system. In the plate, the vacuum coating chamber is evacuated to a vacuum degree of 3 × 10 -7 Torr.

[0061] 3) Start to use the multi-channel pulsed lase...

Embodiment 3

[0068] In this embodiment, the preparation method of the metal-based superconducting tape includes the following steps:

[0069] 1) Iron, selenium and tellurium are mixed in a molar ratio of 1:0.4:0.6 and then ground into powder. The powder passes through a 200-mesh sieve with a sieve balance of 1%. The ground powder is mixed and compressed into tablets, and packaged. Heating to 500°C in a quartz tube and holding for 10h, sintering at 750°C for 12h, cooling down, and cooling to room temperature to obtain a target.

[0070] 2) Put the prepared target material on the target base of the vacuum coating chamber of the multi-channel pulsed laser deposition system, and simultaneously wrap the metal base tape of Ni-W alloy material on the unwinding of the vacuum coating chamber of the multi-channel pulsed laser deposition system. In the plate, the vacuum coating chamber is evacuated to a vacuum degree of 4 × 10 -7 Torr. Among them, the content of W in the Ni-W alloy material is 4 at...

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Abstract

The invention belongs to the technical field of superconductors, and in particular relates to a metal-based superconducting tape and a preparation method thereof. A method for preparing a metal-based superconducting tape, comprising the following steps: 1) using a pulsed laser deposition method to form a thin film on the surface of the metal-based tape; in the pulsed laser deposition method, using Fe (1‑x) Se y Te (1‑y) Target or Fe (1+x) Se y Te (1‑y) A target material, wherein 0≤x≤0.1, 0.1≤y≤0.9; 2) depositing a protective layer on the surface of the thin film by a magnetron sputtering method. The iron-based superconducting tape can be rapidly and continuously prepared by the method of the invention, and the prepared superconducting tape has good C-axis orientation, smooth surface, high superconducting transition temperature and high critical current density.

Description

technical field [0001] The invention belongs to the technical field of superconductors, and in particular relates to a metal-based superconducting tape and a preparation method thereof. Background technique [0002] Since February 2008, the research group of Professor H. Hosono of Tokyo Institute of Technology, Japan has been working on LaFeAsO 1 -xF x Since the discovery of 26K superconductivity in 2000, many research groups at home and abroad have successively reported a series of layered iron-based compounds with superconductivity. Such materials are collectively referred to as iron-based superconductors. Another important class of high-temperature superconducting materials. Iron-based superconductors can be mainly divided into two categories, namely iron-selenium (FeSe)-based superconductors and iron-arsenic (FeAs)-based superconductors. Among them, FeSe-based superconductors have the outstanding advantages that the superconducting critical temperature can be controll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/16C23C14/28C23C14/35B22F3/02B22F3/10B22F5/00C22C38/60H01B12/02
CPCC23C14/28C23C14/16C23C14/35C23C14/165C22C38/60B22F3/02B22F3/1017B22F5/00H01B12/02
Inventor 李贻杰刘林飞叶佳超苗超航牟韶静柯韶东朱容稷
Owner SHANGHAI JIAOTONG UNIV
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