Nanostructural characterization of artificial pinning centers in PLD-processed REBa2Cu3O7-δ films
T Maeda1, K Kaneko1, K Yamada1
1Department of Materials Science and Engineering, Kyushu University, 744, Motooka, Nishi, Fukuoka 819-0395, Japan.
Ultramicroscopy
|December 3, 2016
Summary
Barium hafnate (BaHfO3) nanoparticles enhance the performance of Gadolinium barium copper oxide (GdBCO) superconductors. Nanostructural characterization reveals their role in improving superconducting properties at high temperatures.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Superconductivity
Background:
- High temperature superconductors like Gadolinium barium copper oxide (GdBCO) are crucial for advanced applications.
- Pulsed laser deposition is a key technique for fabricating these materials.
- Incorporating nanoparticles can enhance superconducting properties.
Purpose of the Study:
- To investigate the nanostructural characteristics of Barium hafnate (BaHfO3) nanoparticles within a GdBCO matrix.
- To understand the influence of BaHfO3 nanoparticle dispersion, morphology, and nanostrain on superconducting performance.
- To elucidate the role of these nanoparticles in achieving high current density and improved critical current characteristics.
Main Methods:
- Utilized scanning transmission electron microscopy (STEM) for detailed nanostructural analysis.
- Examined nanoparticle dispersion, morphology, and internal nanostrain.
- Correlated nanostructural features with superconducting properties.
Main Results:
- Detailed nanostructural characterization of BaHfO3 nanoparticles embedded in the GdBCO matrix.
- Analysis of nanoparticle dispersion patterns and their impact on the superconductor.
- Quantification of nanostrain associated with the nanoparticles.
Conclusions:
- BaHfO3 nanoparticles play a significant role in the enhanced performance of GdBCO superconductors.
- Understanding the nanostructure is key to optimizing high-temperature superconducting materials.
- Further research into nanoparticle-matrix interactions can lead to improved superconductor design.
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