MOD method for preparing LSCO conductive film on biaxial texture NiW alloy

A technology of lanthanum strontium cobalt oxide and conductive thin film is applied in the field of YBCO superconducting tape to achieve the effects of reducing manufacturing cost, preventing oxidation and simplifying quantity

Inactive Publication Date: 2010-02-17
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not been found that the MOD method can be used to prepare La on biaxially textured NiW alloys. x Sr 1-x CoO 3 Related reports on conductive buffer layer

Method used

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  • MOD method for preparing LSCO conductive film on biaxial texture NiW alloy
  • MOD method for preparing LSCO conductive film on biaxial texture NiW alloy
  • MOD method for preparing LSCO conductive film on biaxial texture NiW alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The process steps of preparing lanthanum strontium cobalt oxide conductive thin film on biaxially textured NiW alloy by MOD method are as follows.

[0025] Strontium acetate (C 4 h 6 SrO 4 ), lanthanum acetate (C 6 h 9 LaO 6 1.5H 2 O) and cobalt acetate (C 4 h 6 CoO 4 4H 2 O) Three kinds of salts are dissolved step by step into propionic acid (C 2 h 5 COOH), a mixed solution of strontium acetate, lanthanum acetate and cobalt acetate was prepared. which is:

[0026] Strontium acetate (C 4 h 6 SrO 4 ) into propionic acid (C 2 h 5 COOH), stirring to dissolve, and adding lanthanum acetate (C 6 h 9 LaO 6 1.5H 2 (0), stirring and dissolving, then adding cobalt acetate (C) in the propionic acid solution of strontium acetate and lanthanum acetate obtained 4 h 6 CoO 4 4H 2 O), stirred to dissolve.

[0027] Control the molar ratio of lanthanum acetate, strontium acetate and cobalt acetate three kinds of salts to be lanthanum acetate: strontium acetate: c...

Embodiment 2

[0037] The process steps of preparing lanthanum strontium cobalt oxide conductive thin film on biaxially textured NiW alloy by MOD method are as follows.

[0038] Strontium acetate (C 4 h 6 SrO 4 ), lanthanum acetate (C 6 h 9 LaO 6 1.5H 2 O) and cobalt acetate (C 4 h 6 CoO 4 4H 2 O) Three kinds of salts are dissolved step by step into propionic acid (C 2 h 5 COOH), a mixed solution of strontium acetate, lanthanum acetate and cobalt acetate was prepared. which is:

[0039] Strontium acetate (C 4 h 6 SrO 4 ) into propionic acid (C 2 h 5 COOH), stirring to dissolve, and adding lanthanum acetate (C 6 h 9 LaO 6 1.5H 2 (0), stirring and dissolving, then adding cobalt acetate (C) in the propionic acid solution of strontium acetate and lanthanum acetate obtained 4 h 6 CoO 4 4H 2 O), stirred to dissolve.

[0040] Control the mol ratio of lanthanum acetate, strontium acetate and cobalt acetate three kinds of salts to be lanthanum acetate: strontium acetate: cob...

Embodiment 3

[0048] The process steps of preparing lanthanum strontium cobalt oxide conductive thin film on biaxially textured NiW alloy by MOD method are as follows.

[0049] Strontium acetate (C 4 h 6 SrO 4 ), lanthanum acetate (C 6 h 9 LaO 6 1.5H 2 O) and cobalt acetate (C 4 h 6 CoO 4 4H 2 O) Three kinds of salts are dissolved step by step into propionic acid (C 2 h 5 COOH), a mixed solution of strontium acetate, lanthanum acetate and cobalt acetate was prepared. which is:

[0050] Strontium acetate (C 4 h 6 SrO 4 ) into propionic acid (C 2 h 5 COOH), stirring to dissolve, and adding lanthanum acetate (C 6 h 9 LaO 6 1.5H 2 (0), stirring and dissolving, then adding cobalt acetate (C) in the propionic acid solution of strontium acetate and lanthanum acetate obtained 4 h 6 CoO 4 4H 2 O), stirred to dissolve.

[0051] Control the molar ratio of lanthanum acetate, strontium acetate and cobalt acetate three kinds of salts to be lanthanum acetate: strontium acetate: c...

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Abstract

The invention relates to an MOD method for preparing an LSCO conductive film on biaxial texture NiW alloy, which belongs to the technical field of superconducting materials. The method comprises the following steps: dissolving strontium acetate, lanthanum acetate and cobaltous acetate into propionic acid step by step and adding acetylacetone to prepare precursor solution; coating the precursor solution on a biaxial texture NiW base band by a glue homogenizing machine; then carrying out pyrolysis processing and carrying out coating and pyrolysis processing again; and carrying out crystallization reaction. The prepared LSCO film has the thickness of 500-700nm, obstructs the diffusion process of a Ni element to a YBCO layer and favorably prevents the oxidation of an NiW substrate; and the electrical resistivity of the film, which is detected by a four-lead method can reach 1.1*10<-4>omega*m in a liquid nitrogen temperature zone. Compared with the traditional process, the invention reducesthe number of buffer layers, thereby reducing the preparation process and the manufacture cost of a YBCO / buffer / NiW composite material.

Description

technical field [0001] The invention belongs to the technical field of superconducting materials, and in particular relates to the technology of YBCO superconducting strips. Background technique [0002] YB 2 Cu 3 o 7-x (YBCO) is a promising high-temperature superconducting material, which has broad application prospects in electronic devices and other fields. Because many metal ions will interdiffuse with the YBCO layer at high temperature, which will seriously reduce the superconductivity of YBCO, so it is necessary to deposit one or more layers of buffer layer materials on the metal substrate to prevent the metal substrate and the YBCO layer. In addition, as far as the YBCO film is concerned, only the biaxial texture can have good superconductivity, which requires the buffer layer to have good lattice matching with the substrate and YBCO, and the biaxial texture epitaxy of the metal substrate can be transferred to the YBCO layer. Therefore, in the process of preparin...

Claims

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Application Information

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IPC IPC(8): C23C18/12H01B12/06H01B13/00
CPCY02E40/642Y02E40/60
Inventor 李英楠樊占国李凤华沈悦罗清威李成山卢亚峰
Owner NORTHEASTERN UNIV
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