Collosol of yttrium barium cupper oxygen superconducting film and process for preparing high temp. superconducting film thereof

A technology of high-temperature superconducting thin film and yttrium-barium-copper-oxygen is applied in superconducting/high-conducting conductors, usage of superconducting elements, and superconducting devices. The effect of simple adjustment and preparation process and low fluorine content

Inactive Publication Date: 2006-06-28
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of slow temperature rise often takes a long time. For the preparation of thick YBCO films, it is necessary to repeat the process of "coating-thermal decomposition" many times, which makes the preparation process longer.

Method used

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  • Collosol of yttrium barium cupper oxygen superconducting film and process for preparing high temp. superconducting film thereof
  • Collosol of yttrium barium cupper oxygen superconducting film and process for preparing high temp. superconducting film thereof

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preparation example Construction

[0023] The preparation method of the sol for the above-mentioned yttrium barium copper oxide high temperature superconducting thin film comprises the following steps:

[0024] 1) Dissolving yttrium acetate in methanol, adding a small amount of diethylenetriamine, making yttrium acetate:methanol:diethylenetriamine=1:(10-40):(1.5-5), forming solution A after stirring;

[0025] 2) Dissolve barium acetate in a mixed solution containing water and trifluoroacetic acid, so that barium acetate: water: trifluoroacetic acid = 1: (10-80): (2-5), after stirring and dissolving, after 65 ° C ~ Dry at 85°C, and dissolve the resulting product in methanol solution so that the molar ratio Ba 2+ : Methanol=1: (10~40), obtain solution B;

[0026] 3) Dissolve copper acetate in methanol, add a small amount of α-methacrylic acid, so that copper acetate: methanol: α-methacrylic acid = 1: (10-40): (2-10), after stirring slightly Solution C is formed;

[0027] 4) Mix the solutions A, B and C obtaine...

Embodiment 1

[0034] Dissolve yttrium acetate in methanol, add diethylenetriamine so that the molar ratio of each component is: yttrium acetate:methanol:diethylenetriamine=1:27:1.5, and form solution A after stirring and clarification.

[0035]Dissolve barium acetate in a mixed liquid containing water and trifluoroacetic acid so that barium acetate: water: trifluoroacetic acid = 1:40:3. After stirring and dissolving, the substance obtained after drying at 80°C was redissolved in methanol solution so that the molar ratio Ba 2+ :methanol=1:20, and solution B was obtained after stirring and clarification.

[0036] Dissolve copper acetate in methanol, add a small amount of α-methacrylic acid to make copper acetate:methanol:α-methacrylic acid=1:22:2, and form solution C after slight heating and stirring.

[0037] Mix the above solutions A, B, and C, and stir, so that Y 3 +: Ba 2+ : Cu 2+ =1:2:3.2, forming the required sol.

[0038] Using the sol, a layer of gel film was coated on the single...

Embodiment 2

[0040] Dissolve yttrium acetate in methanol, add diethylenetriamine so that the molar ratio of each component is: yttrium acetate:methanol:diethylenetriamine=1:25:1.5, and form solution A after stirring and clarification.

[0041] Dissolve barium acetate in a mixed solution of water and trifluoroacetic acid so that barium acetate: water: trifluoroacetic acid = 1:40:3, stir and dissolve, and dry at 75°C to form a viscous glassy substance. and redissolved in methanol solution such that the molar ratio Ba 2+ :methanol=1:16, and solution B was obtained after stirring and clarification.

[0042] Take copper acetate as the raw material, dissolve it in methanol, add a small amount of propionic acid to make copper acetate: methanol: propionic acid = 1:25:3, and form solution C after slight heating and stirring.

[0043] Mix the above three solutions A, B, and C and stir, so that Y 3+ : Ba 2+ : Cu 2+ =1:2:4, forming the required sol. The above-mentioned copper acetate can be repla...

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Abstract

A sol of the Y-Ba-Cu-O (YBCO) superconductor film is proportionally prepared from yttrium acetate, barium acetate, copper acetate, trifluoroacetic acid, water, alpha-methylacrylic acid, divinyltriamine and methanol. A process for preparing the high-temp superconductor film from said sol is also disclosed.

Description

technical field [0001] The invention relates to a film material in the field of microelectronics and materials, and relates to a superconducting film and a preparation method thereof, specifically, a sol of yttrium-barium-copper-oxygen superconducting film and a method for preparing a high-temperature superconducting film. Background technique [0002] The chemical formula of yttrium barium copper oxide is YBa 2 Cu 3 o 7-x , abbreviated as YBCO. Yttrium barium copper oxide thin film can be used in the field of microelectronics to make various high, precise and sharp electronic devices, such as superconducting quantum interference device (SQUID), superconducting coupled antenna (Antenna-coupled), superconducting detector (Superconductorbolometric detectors) etc. [0003] At present, methods such as PLD, MOCVD, and magnetron sputtering are mainly used to prepare YBCO thin films, but expensive vacuum equipment is involved. In recent years, the sol-g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G1/02C04B35/01H01B12/00
CPCY02E40/60
Inventor 赵高扬陈源清
Owner XIAN UNIV OF TECH
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