Dependence of the structure of Bi-2212 superconducting thin film prepared by sol-gel method on different complexing agents

Zhang, Bowen; Guo, Qing; Dai, Bushi; Wang, Nan; Dai, Yuxiang; Qi, Yang

doi:10.1016/j.ceramint.2022.05.025

Cited by 13 publications

(3 citation statements)

References 34 publications

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“…We have conducted extensive studies on the preparation of Bi2212 superconducting lms by sol-gel method with aqueous solvents. [28][29][30][31] It was shown that this environmentally friendly and low-cost method can prepare high quality Bi2212 superconducting lms. At the same time, the sol-gel method can maintain homogeneity at the atomic level.…”

Section: Introductionmentioning

confidence: 99%

Effect of Er/Y addition on the growth and superconductivity of Bi2212 films

Zhang,

2023

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Effect of Er/Y addition on the growth and superconductivity of Bi2212 films

Zhang,

2023

RSC Adv.

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“…[42,43] The slower condensation kinetics allow the formation of denser inorganic networks, by reducing the intrinsic microporosity of the inorganic material produced during the sol-gel condensation. [44] This can be expected to have an impact on the mechanical properties of the films. However, such study remains unexplored.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Mechanical Stability and Scratch Resistance of Mesoporous Aluminosilicate Thin Films

Reid

Mane

Ahmed

et al. 2022

Preprint

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Mesoporous coatings are widely used in industries such as optics, display technologies, photovoltaics, and bioengineering, due to their attractive properties such as high surface to volume ratio and excellent mass and electron transport characteristics. While structural parameters and material composition can be routinely tailored to the respective applications, improvements of their mechanical properties and robustness, essential for their long-term performance, remain a challenge. Herein, we provide a comprehensive study on the relationship between the degree of porosity, type of material processing and resulting mechanical properties for the use case of mesoporous aluminosilicate thin films that were co-assembled via a sacrificial block copolymer structure-directing agent. Several routes, including the introduction of chelating agents on the precursor solution, a two-step calcination process, and a variation over the aluminium content were explored with the objective of improving the scratch resistance and mechanical properties of the final mesoporous thin film. Pencil hardness tests were combined with atomic force microscopy analysis to investigate the macroscopic scratch resistance, i.e. plastic deformation. Ellipsometric porosimetry served to determine the elastic deformation of the nanoscopic architecture via measurement of the Young’s modulus. Our comparative investigation highlights the promising role of organic chelating agents to the sol-gel formulation to slow down the hydrolysis of the aluminium precursor, which facilitated improvements of the mechanical performance close to industrial standard.

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“…The addition of chelating agents provides access to stable and precipitation-free sol-gel precursor solutions [42,43]. The slower condensation kinetics allow the formation of denser inorganic networks, by reducing the intrinsic microporosity of the inorganic material produced during the sol-gel condensation [44]. This can be expected to have an impact on the mechanical properties of the films.…”

Section: Introductionmentioning

confidence: 99%