Тип публикации: статья из журнала
Год издания: 2023
Идентификатор DOI: 10.1007/s10948-023-06575-8
Ключевые слова: critical current density, critical state model, circulation scale, two-level model, Granular superconductors, granularity, Intragrain currents, strongly correlated systems, superconductivity, magnetism, magnetic materials, condensed matter physics, Characterization and Evaluation of Materials
Аннотация: In a recent paper, Zhang et al. [1] studied the effect of a Pb content on the superconducting properties of Bi-2223. Some earlier, Ramírez et al. [2] explored the effect of compaction pressure on the Bi-2212. In both studies, the critical current densities were estimated and compared for a series of polycrystalline superconducting Показать полностьюsamples. The synthesis conditions for the highest critical current density were claimed in both works. This comment explains that the average granule size should be used instead of the sample size in the Bean formula for the polycrystalline superconductors synthesized by solid-state, sol–gel, electrospinning, and solution blow spinning methods. The corrected estimations for the commented articles conclude that the synthesis conditions affect both the granule size and the intragranular critical current density. The synthesis parameters for the highest critical current density conditions are clarified.
Журнал: Journal of Superconductivity and Novel Magnetism
Выпуск журнала: Т.36, №4
Номера страниц: 1089-1092
ISSN журнала: 15571939
Издатель: Springer New York LLC