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Method for preparing Y2Ce2O7 transition layer thin film for superconduction coatings

A superconducting coating, y2ce2o7 technology, applied in the field of high-temperature superconducting thin film buffer layer preparation, can solve the problems of loose thin film, rough surface, poor texture, etc., and achieve the effect of increasing the proportion, reducing the probability of occurrence and reducing the performance.

Active Publication Date: 2015-04-22
JIANGSU HENGTONG PHOTOELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of this invention is to provide a kind of CeO2 film that superconducting coating is doped with Y, i.e. Y 2 Ce 2 o 7 The preparation method of transition layer thin film, the Y obtained by this preparation method 2 Ce 2 o 7 The transition layer thin film solves the problem of existing undoped CeO 2 The transition layer film is easy to crack, the surface is rough, the film is loose, and the texture is poor, which meets the application of high temperature superconducting coated conductors

Method used

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  • Method for preparing Y2Ce2O7 transition layer thin film for superconduction coatings
  • Method for preparing Y2Ce2O7 transition layer thin film for superconduction coatings
  • Method for preparing Y2Ce2O7 transition layer thin film for superconduction coatings

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Embodiment 1

[0032] Embodiment 1: Y for a kind of superconducting coating 2 Ce 2 o 7 The preparation method of transition layer thin film, comprises the following steps:

[0033] Step 1. After mixing yttrium acetate, the first organic additive, and methanol, stir at 35° C. for 2 hours to obtain a clear yttrium-containing solution. The molar ratio of the yttrium acetate to the first organic additive is 1:2;

[0034] Step 2: adding cerium nitrate, acetylacetone, and propionic acid into methanol solvent in a molar ratio of 1:3.5:5, and stirring at 35°C for 2 hours to obtain a clear cerium-containing solution;

[0035] Step 3, mixing the yttrium-containing solution obtained in step 1 with the cerium-containing solution obtained in step 2 to obtain a first mixed solution, and then adding methanol as a diluent solvent to the first mixed solution to adjust the concentration of metal ions, so that yttrium, The total metal ion concentration of cerium reaches 0.3mol / l, and it is stirred and clari...

Embodiment 2

[0042] Embodiment 2: a kind of Y for superconducting coating 2 Ce 2 o 7 The preparation method of transition layer thin film is characterized in that: comprises the following steps:

[0043] Step 1. After mixing yttrium acetate, the first organic additive, and methanol, stir at 45° C. for 1.5 hours to obtain a clear yttrium-containing solution. The molar ratio of the yttrium acetate to the first organic additive is 1:2.5;

[0044] Step 2: adding cerium nitrate, acetylacetone, and propionic acid into methanol solvent in a molar ratio of 1:3:7, and stirring at 35°C for 2.5 hours to obtain a clear cerium-containing solution;

[0045] Step 3, mixing the yttrium-containing solution obtained in step 1 with the cerium-containing solution obtained in step 2 to obtain a first mixed solution, and then adding methanol as a diluent solvent to the first mixed solution to adjust the concentration of metal ions, so that yttrium, The total metal ion concentration of cerium reaches 0.25mol / ...

Embodiment 3

[0052] Embodiment 3: a kind of Y for superconducting coating 2 Ce 2 o 7 The preparation method of transition layer thin film, comprises the following steps:

[0053] Step 1. After mixing yttrium acetate, the first organic additive, and methanol, stirring at 38°C for 3 hours to obtain a clear yttrium-containing solution, the molar ratio of the yttrium acetate to the first organic additive is 1:2.8;

[0054] Step 2: adding cerium nitrate, acetylacetone, and propionic acid into methanol solvent in a molar ratio of 1:4:5, and stirring at 40° C. for 1 hour to obtain a clear cerium-containing solution;

[0055] Step 3, mixing the yttrium-containing solution obtained in step 1 with the cerium-containing solution obtained in step 2 to obtain a first mixed solution, and then adding methanol as a diluent solvent to the first mixed solution to adjust the concentration of metal ions, so that yttrium, The total metal ion concentration of cerium reaches 0.28mol / l, stirring and clarifying a...

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Abstract

The invention discloses a method for preparing Y2Ce2O7 transition layer thin film for superconduction coatings. The method includes the following steps: acetic acid yttrium, a first organic addition agent and methyl alcohol are mixed and blended to obtain a clear yttrium-contained solution; cerous nitrate, acetylacetone and propionic acid are mixed to obtain a clear cerium-contained solution; the obtained yttrium-contained solution and the obtained cerium-contained solution are mixed to obtain a first mixed solution, and methyl alcohol is added into the first mixed solution to obtain a precursor solution of the Y2Ce2O7 transition layer thin film; the Y2Ce2O7 transition layer thin film is coated on flexible nickel-tungsten alloy base bands through the adoption of the precursor solution of the Y2Ce2O7 transition layer thin film; after drying is conducted and 180 nm-250 nm ultraviolet irradiation is carried out, heat treatment is carried out in a first protective atmosphere, cooling is carried out in a second protective atmosphere, and the Y2Ce2O7 transition layer thin film is obtained from corresponding base sheets or the corresponding base bands. The method overcomes the defects that existing transition layer thin film is easy to crack, the surface is rough, and the texture degree is poor; YBCO superconduction thin film prepared on the basis of the transition layer is free of impurity phases, the good c-axis texture is achieved, and the application requirement of high temperature superconductor coating conductors is met.

Description

technical field [0001] The invention relates to the technical field of preparation of high-temperature superconducting thin film buffer layers. Particularly relate to a kind of Y for superconducting coating 2 Ce 2 o 7 Preparation method of transition layer thin film. Background technique [0002] High-temperature superconducting thin films or coatings have broad application prospects in the field of power electronics. In the field of power transmission, high-temperature superconducting technology is an important high-tech technology in the field of power in the 21st century. Used in the field of electronic devices, high-temperature superconducting thin films need to be deposited on such as LaAlO 3 , MgO and other single crystal substrates. In order to obtain high-quality thin films, it is often necessary to 3 , MgO and other substrates to make a transition layer. For the power field, the YBa prepared on the flexible NiW metal substrate 2 Cu 3 o 7-x (YBCO) high-tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B12/02H01B13/00C23C20/08
CPCY02E40/60
Inventor 陈源清江平
Owner JIANGSU HENGTONG PHOTOELECTRIC
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