Superconducting Wire Film Composition for Fast Growth Vortex Pinning
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Solution Overview
Problem
Existing high temperature superconducting wires face challenges in achieving high critical currents and efficient vortex pinning, particularly at fast growth rates, leading to structural disorder and reduced performance in high magnetic fields.
Innovation Solution
A liquid-assisted processing (LAP) method is employed during the formation of superconducting films, incorporating a non-stoichiometric source with mixed rare-earth elements and Ba2YNbO6 additives to create a mixed pinning landscape of columnar and point defects, enabling fast growth rates and strong vortex pinning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fast growth rates are used during superconducting film formation, then productivity is improved, but manufacturing precision deteriorates due to structural disorder
Solution Approach 1:
The patent modifies the chemical composition parameters of the superconducting film by incorporating mixed rare-earth elements (Y1-xRExBCO where RE = Yb, Sm) and Ba2YNbO6 additives. This compositional parameter change enables the formation of artificial pinning centers that stabilize the crystal structure during fast growth, thereby maintaining manufacturing precision while improving productivity
Solution Approach 2:
The patent creates a composite superconducting material system combining YBCO with rare-earth elements (Yb, Sm) and Ba2YNbO6 additives. This composite structure forms a mixed pinning landscape with both columnar and point defects that enhances vortex pinning while maintaining crystalline quality during rapid deposition processes
2Ease of manufacture
If standard stoichiometric composition is used, then manufacturing simplicity is maintained, but reliability deteriorates due to insufficient vortex pinning in high magnetic fields
Solution Approach 1:
The patent introduces localized structural variations by incorporating Ba2YNbO6 additive particles and rare-earth elements at specific compositional ratios (x = 0.05-0.15). These local compositional modifications create artificial pinning centers that enhance vortex pinning reliability in high magnetic fields while maintaining overall manufacturing simplicity through a standardized deposition process
3Reliability
If mixed rare-earth elements and additives are incorporated, then reliability is improved through enhanced vortex pinning, but device complexity increases
Solution Approach 1:
The patent optimizes specific compositional parameters (x = 0.05-0.15 for rare-earth content, controlled Ba2YNbO6 additive concentration) to achieve enhanced vortex pinning. By precisely controlling these parameters within narrow ranges, the patent improves reliability while minimizing device complexity through a relatively simple single-step deposition process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method achieves high critical currents and improved vortex pinning, outperforming standard films by up to six times at 10 K and reducing production costs through faster growth rates, while maintaining excellent crystalline quality and structural integrity.
Implementation Method 1
A liquid-assisted processing (LAP) method is employed during the formation of superconducting films, incorporating a non-stoichiometric source with mixed rare-earth elements and Ba2YNbO6 additives
Implementation Method 2
A superconductor loses all its resistance below critical temperature and a large amount of an electric current may pass through the superconductor without loss
Implementation Method 3
incorporating a non-stoichiometric source with mixed rare-earth elements and Ba2YNbO6 additives to create a mixed pinning landscape of columnar and point defects, enabling fast growth rates and strong vortex pinning
Data Source
AI summary
Provided is a superconducting wire. The superconducting wire comprises a substrate, a superconducting film on the substrate and a pinning center in the superconducting film. The superconducting film includes Y1-xRExBCO and the pinning center has an additive of Ba2YNbO6.