Textured Pb-Doped Bi-2212 Superconductors for Current Limiters

Sotelo, A.; Rasekh, Sh.; Amaveda, H.; Bosque, P.; Torres, Miguel; Madre, M. A.; Díez, J. C.

doi:10.1007/s10948-014-2651-8

Cited by 11 publications

References 34 publications

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Reveal of relationship between microscopy architecture and mechanical performance of Y/Bi substituted Bi‐2212 engineering ceramics

Yilmaz,

Kurtul,

Ülgen

et al. 2024

Microscopy Res & Technique

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This study aims to find out how the crystallinity quality, surface morphology, and mechanical performances change with the substitution of yttrium (Y) for bismuth (Bi) impurity within molar ratios of 0.00 ≤ x ≤ 0.12 in the Bi2.0−xYxSr2.0Ca1.1Cu2.0Oy (Bi‐2212) cuprates to reveal the dependence of micro surface topology on the substitution mechanism and achieve a strong relation between the impurity ions and crystallization mechanism. The materials are prepared by ceramic method. It is found that all the experimental findings improve remarkably with increasing yttrium impurity molar ratio of x = 0.01. Scanning electron microscopy (SEM) images indicate that the optimum Y ions strengthen the formation of flaky adjacent stacked layers due to the changes of thermal expansion, vibration amplitude of atoms, heat capacitance, reaction kinetics, activation energy, nucleation temperature, thermodynamic stability, and intermolecular forces. Besides, new engineering novel compound produced by optimum Y ions presents the best crystallinity quality, uniform surface view, greatest coupling interaction between grains, largest particle size distributions/orientations, and densest/smoothest surface morphology. Hardness measurement results totally support the surface morphology view. Moreover, mechanical design properties and durability of the tetragonal phase improve significantly with increasing replacement level of x = 0.01 due to the induction of new surface residual compressive stress areas, slip systems, and chemical bonding between the foreign and host atoms. Besides, the same sample exhibits the maximum strength and minimum sensitivity to loads depending on reduction of stored internal strain energy and degree of granularity. Consequently, cracks tend to propagate predominantly within the transcrystalline regions. Furthermore, each material investigated exhibits the characteristic behavior of the indentation size effect. In summary, the optimum Y‐doped Bi‐2212 sample paves the way for the expanded use of engineering ceramics across various applications based on the enhanced service life.Research Highlights The presence of the optimum yttrium impurity significantly decreases the Ea value. As the Y/Bi replacement increases up to the molar substitution level of x = 0.01, the mechanical design properties and durability of the tetragonal phase enhance significantly.

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Reveal of relationship between microscopy architecture and mechanical performance of Y/Bi substituted Bi‐2212 engineering ceramics

Yilmaz,

Kurtul,

Ülgen

et al. 2024

Microscopy Res & Technique

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Processing of Superconducting and Thermoelectric Bulk Materials Via Laser Technologies

Özçelık

Gül

Gürsul

et al. 2020

Functional Nanostructures and Sensors for CBRN Defence and Environmental Safety and Security

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Improvement in organization of Cu–O coordination and super-electrons in Bi-2212 ceramic matrix with Ag/Sr partial substitution

Al Azzawi,

Türköz,

Erdem

et al. 2024

J Mater Sci: Mater Electron

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This study rationalizes the reason for an increase in the electrical conductivity, crystal quality, surface morphology, and superconductive transition temperatures for Bi-2212 superconductors via scientific facts and discussions depending on replacing the optimum Ag/Sr sites in the system for the first time. Every experimental result and related calculations indicate the successful replacement of monovalent Ag+ ions for the divalent Sr2+ ions in the polycrystalline Bi-2212 structure. Moreover, it is observed that the bulk Bi-2212 ceramic prepared with a partial substitution level of x = 0.01 is observed to possess the highest electrical conductivity and superconductive transition temperatures of 84.68 K and 86.26 K for the $$T_{c}^{offset}$$ T c offset and $$T_{c}^{onset}$$ T c onset , respectively. Besides, in the case of the optimum replacement level, the Bi-2212 ceramic exhibits the most uniform and smoothest surface appearance, highest interactions between the grains, best microcrystal distributions/orientations, and largest average crystalline distribution along the crystal structure. In this regard, this study becomes a leader in broadening the application spectra including the heavy-industrial technologies, innovative, advanced engineering-related sectors, and large-scale application fields for Bi-2212 superconducting ceramics.

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Textured Pb-Doped Bi-2212 Superconductors for Current Limiters

Cited by 11 publications

References 34 publications

Reveal of relationship between microscopy architecture and mechanical performance of Y/Bi substituted Bi‐2212 engineering ceramics

Reveal of relationship between microscopy architecture and mechanical performance of Y/Bi substituted Bi‐2212 engineering ceramics

Processing of Superconducting and Thermoelectric Bulk Materials Via Laser Technologies

Improvement in organization of Cu–O coordination and super-electrons in Bi-2212 ceramic matrix with Ag/Sr partial substitution

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