Method for preparing high critical current density yttrium barium copper oxide superconducting film

A yttrium barium copper oxide, superconducting thin film technology, applied in the usage of superconducting elements, superconducting devices, superconducting/high conducting conductors and other directions, can solve the problems of reducing the critical current density of thin films, etc. Simple, easy-to-use effects

Inactive Publication Date: 2009-06-17
SOUTHWEST JIAOTONG UNIV
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impact of the introduction of fluorine on the environment during the entire heat treatment process of the TFA-MOD method cannot be ignored, and the HF gas emitted during the heat treatment process causes the porous surface morphology of the YBCO superconducting film, which will reduce the criticality of the film. current density

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing high critical current density yttrium barium copper oxide superconducting film
  • Method for preparing high critical current density yttrium barium copper oxide superconducting film
  • Method for preparing high critical current density yttrium barium copper oxide superconducting film

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0036] A specific embodiment of the present invention is: a method for preparing a high critical current density yttrium-barium-copper-oxygen superconducting thin film, and its specific method is:

[0037] a. Preparation of precursor solution: Dissolve yttrium acetate, barium acetate, copper acetate and cobalt acetate in propionic acid according to the stoichiometric ratio of yttrium: barium: copper: cobalt 1:2:2.999:0.001 to obtain a precursor solution. The impurity element in this example is cobalt, and the acetate of the impurity element is cobalt acetate.

[0038] b. Preparation of coating colloid: In the precursor solution of step a, add polymer material polyvinyl butyral (PVB), the mass ratio of the added polymer material to the precursor solution is 4:100, fully stir to obtain the coating layer colloid;

[0039] c. Coating and drying: apply the coating colloid prepared in step b on the substrate, form a thin film on the substrate, and dry at a temperature range of 150°...

Embodiment 2

[0046] The preparation method of this example is as follows:

[0047] A, preparation of precursor solution: yttrium acetate, barium acetate, copper acetate and zinc acetate are dissolved in propionic acid in the ratio of yttrium: barium: copper: zinc stoichiometric ratio 1:2:2.999:0.001, to obtain precursor solution;

[0048] b. Preparation of coating colloid: In the precursor solution of step a, add polymer material polyvinyl butyral (PVB), the mass ratio of the added polymer material to the precursor solution is 4:100, fully stir to obtain the coating layer colloid;

[0049] c. Coating and drying: apply the coating colloid prepared in step b on the substrate, form a thin film on the substrate, and dry at a temperature range of 100°C for 15 minutes;

[0050] d. Thermal decomposition treatment and phase forming heat treatment: the substrate with film obtained in step C is subjected to thermal decomposition treatment and then phase forming heat treatment is carried out. Its s...

Embodiment 3

[0055] The specific approach in this example is:

[0056] A, preparation of precursor solution: yttrium acetate, barium acetate, copper acetate and iron acetate are dissolved in propionic acid in the ratio of yttrium: barium: copper: iron stoichiometric ratio 1:2:2.999:0.001, obtain precursor solution;

[0057] b. Preparation of coating colloid: In the precursor solution of step a, add polymer material polyvinyl butyral (PVB), the mass ratio of the added polymer material to the precursor solution is 4:100, fully stir to obtain the coating colloid;

[0058] c. Coating and drying: apply the coating colloid prepared in step b on the substrate, form a thin film on the substrate, and dry at a temperature range of 160°C for 8 minutes;

[0059] d. Thermal decomposition treatment and phase forming heat treatment: the substrate with film obtained in step C is subjected to thermal decomposition treatment and then phase forming heat treatment is carried out. Its specific operation is a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for preparing a yttrium barium copper oxide superconducting film with high critical current density, which comprises the following concrete steps: a, preparing a precursor solution, which is to dissolve yttrium acetate, barium acetate, copper acetate and acetate of an impurity element into propionic acid according to the proportion that the stoichiometric ratio of yttrium: barium: copper: impurity element is 1: 2: 3-X: X (the X is more than or equal to 0.0002 and less than or equal to 0.008) to obtain the precursor solution, and the impurity element is one of Co, Fe, Zn, Ni, and Li; b, adding a polymer material polyvinyl butyral (PVB) into the precursor solution obtained in a step to obtain a coating colloid; c, coating and drying the coating colloid on a substrate to form a film; and d, performing thermal decomposition treatment on the substrate with the film prepared in c step and then imaging thermal treatment to obtain the YBCO superconducting film. The yttrium barium copper oxide superconducting film prepared by the method has high biaxial texture, smooth and compact surface, high critical current density under a magnetic field, low cost, and simple process, and is suitable for mass industrial production.

Description

technical field [0001] The invention relates to a method for preparing a yttrium-barium-copper-oxygen superconducting thin film. Background technique [0002] In recent years, the high-temperature superconducting coated conductor, that is, the second-generation high-temperature superconducting tape, especially the second-generation tape with yttrium barium copper oxide (YBCO) as the superconducting layer, has received worldwide attention due to its potential application prospects. General concern. The second generation of YBCO tape has important applications in superconducting cables, motors, generators, magnetic energy storage and magnetic resonance imaging. The YBCO coated conductor is mainly composed of a metal base band, a buffer layer, a superconducting layer and a protective layer. The current-carrying performance of the coated conductor mainly depends on the ability of the superconducting layer to transmit current. However, the critical current density of the superc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/45C04B35/622H01B12/00
CPCY02E40/64Y02E40/60
Inventor 王文涛赵勇蒲明华师晓燕王伟
Owner SOUTHWEST JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap