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Nanostructures superconducting composite film and preparation method thereof

A composite thin film and nanostructure technology, applied in the field of nanostructured superconducting composite thin films and their preparation, can solve the problems of high cost, difficulty in changing the volume fraction of superconducting thin films, and inability to prepare real-time adjustable superconducting thin films with doping concentration, etc. To achieve the effect of improving the ability to carry current

Active Publication Date: 2016-07-06
北京安泰可科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole preparation process is complex and costly; and once the precursor solution is successfully configured, the volume fraction of the prepared superconducting film is difficult to change, that is, it is impossible to prepare a superconducting film with real-time adjustable doping concentration

Method used

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  • Nanostructures superconducting composite film and preparation method thereof
  • Nanostructures superconducting composite film and preparation method thereof
  • Nanostructures superconducting composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1, preparation of STO-based MgO:YBCO=1:95 superconducting composite film.

[0029] 1. Target preparation and STO substrate cleaning: In the magnetron and pulse laser co-deposition device, the magnetron target is made of high-purity MgO (purity>99.95%, Beijing Antaike Technology Co., Ltd.) ceramic target, and the laser target Choose high-purity YBa 2 Cu 3 o 7-x (purity>99.95%, Beijing Antaike Technology Co., Ltd.) target material. Clean the 0.5mm thick STO (001) single crystal substrate in acetone and absolute ethanol sequentially for 10 minutes with ultrasonic waves, and blow dry it with high-purity nitrogen to ensure that the substrate is clean. Stick the substrate on the sample holder with silver glue, and then put the sample holder into the magnetron and pulse laser co-deposition device.

[0030] 2. Preparation of nanostructured MgO-doped YBCO composite film: the vacuum degree of the back and bottom of the vacuum chamber is 2×10 -4 Pa, the magnetron targ...

Embodiment 2

[0035] Example 2, preparation of STO-based MgO:YBCO=1:40 superconducting composite film.

[0036] 1. Target preparation and STO substrate cleaning: In the magnetron and pulse laser co-deposition device, the magnetron target is made of high-purity MgO (purity>99.95%, Beijing Antaike Technology Co., Ltd.) ceramic target, and the laser target Choose high-purity YBa 2 Cu 3 o 7-x (purity>99.95%, Beijing Antaike Technology Co., Ltd.) target material. Clean the 0.5mm thick STO (001) single crystal substrate in acetone and absolute ethanol sequentially for 10 minutes with ultrasonic waves, and blow dry it with high-purity nitrogen to ensure that the substrate is clean. Stick the substrate on the sample holder with silver glue, and then put the sample holder into the magnetron and pulse laser co-deposition device.

[0037] 2. Preparation of nanostructured MgO-doped YBCO composite film: the vacuum degree of the back and bottom of the vacuum chamber is 2×10 -4 Pa, the magnetron targ...

Embodiment 3

[0041] Example 3, preparation of MgO:YBCO=1:95 superconducting composite film on flexible metal substrate.

[0042] 1. Target preparation and metal substrate cleaning: In the magnetron and pulse laser co-deposition device, the magnetron target is made of high-purity MgO (purity>99.95%, Beijing Antaike Technology Co., Ltd.) ceramic target, and the laser target is selected High purity YBa 2 Cu 3 o 7-x (purity>99.95%, Beijing Antaike Technology Co., Ltd.) target material. Clean the 0.1mm thick metal base tape with a buffer layer in acetone and absolute ethanol for 10 minutes in sequence, and blow it dry with high-purity nitrogen to ensure that the base tape is clean. Use silver glue to stick the base tape on the sample holder, and then put the sample holder into the magnetron and pulse laser co-deposition device.

[0043] 2. Preparation of nanostructured MgO-doped YBCO composite film: the vacuum degree of the back and bottom of the vacuum chamber is 2×10 -4 Pa, the magnetron...

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Abstract

The invention provides a nanostructures superconducting composite film and a preparation method thereof. The nanostructures superconducting composite film provided by the invention is formed by co-depositing a superconducting material and a non-superconducting nano material on a substrate through a magnetron and pulsed laser codeposition technology; the substrate is an SrTiO3, LaAlO3, MgO or flexible metal base band and the like; the superconducting material is REBa2Cu3O(7-x) (RE is rare-earth elements of Y, Gd, Nd, Sm and the like) or (LaSr)2CuO4 and the like; and the non-superconducting nano material is at least one of MgO, CeO2, Y2O3, BaZrO3 and BaSnO3. Through a magnetron and pulsed laser co-sputtering method, control on introduced defect distribution condition is achieved by adjusting magnetron and laser sputtering parameters in real time in the film growth process; and the target of adjusting and controlling the micro-structure and the superconducting property of the superconducting composite film is finally achieved.

Description

technical field [0001] The invention relates to a superconducting composite thin film, in particular to a nanostructured superconducting composite thin film and a preparation method thereof. Background technique [0002] The discovery of superconductivity in 1911 and the successful development of high-temperature superconducting materials (HTS) in 1986 are one of the major achievements of scientific and technological progress in the 20th century and an important field of modern scientific research. The superconducting transition temperature of high-temperature superconducting materials in the liquid nitrogen temperature region makes them have attractive application prospects in the fields of communication, medical care, non-destructive testing of materials, microscopic technology and geophysics. With the development of science and technology and the continuous improvement of living standards, the demand for superconducting materials is increasing, and its application fields ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B12/06H01B13/00B82Y30/00B82Y40/00C23C14/08C23C14/35C23C14/58
CPCB82Y30/00B82Y40/00C23C14/08C23C14/081C23C14/083C23C14/352C23C14/357C23C14/5806H01B12/06H01B13/00Y02E40/60
Inventor 代秀红刘保亭付跃举郭建新周阳关丽赵庆勋
Owner 北京安泰可科技有限公司
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