Determination of Stoichiometry and Superconducting Properties of Y3−xNdxBa5−xCaxCu8O18−δ Samples

Barakat, Mai Mohamed Ezzat; Awad, R.; Abou‐Aly, A. I.; Roumié, Mohammed; Aly, N. S.; Ibrahim, S.

doi:10.1007/s10948-014-2708-8

Cited by 8 publications

(1 citation statement)

References 15 publications

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“…Despite the existence of other high-temperature superconductors (HTSC) with higher T c , yttrium cuprates have a number of advantages. This is the ease of obtaining (less energy-intensive), the absence of toxic and volatile oxides Hg, Bi, Tl and Pb (environmentally friendly), the ability to easily grow single crystals with good magnetic and microstructural properties [7]. And the creation of materials with new qualitative properties and the improvement of the characteristics of existing compounds is the main goal of modern synthetic science.…”

Section: Introductionmentioning

confidence: 99%

DETERMINATION OF THE SIZES OF PARTICLES OF SUPERCONDUCTING CUPRATE Y3Ba5Cu8OX BY MEANS OF DIFFERENT METHODS

Bolotnikova¹

2020

Technology transfer: fundamental principles and innovative tech

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The superconducting cuprate Y3Ba5Cu8Ox was obtained with the help of sol-gel technology (sample C), co-precipitation of hydroxocarbonates (sample B) and solid-phase synthesis methods (A). Based on the results of scanning electron microscopy and methods based on the analysis of X-ray diffraction data: the Williamson-Hall construction and the Scherrer formula, features of the microstructure of the synthesized samples are established. The smallest particle size has a sample that has been synthesized by the sol-gel method. The tendency to aggregation and sedimentation for this sample is the smallest. The sample obtained by the co-precipitation method has larger grains and a higher tendency to aggregate. The size of the microparticles and the tendency to aggregate for the sample synthesized by the solid-phase method are greatest. The morphology of particles was studied using three methods: SEM, Scherrer and Williamson-Hall formulas and the following results were found: particle size depends on the synthesis method, but a relatively narrow size distribution within one synthesis method remains, the value of crystal lattice microdeformation for samples increases in a line: C sample– A sample– B sample. Thus, the work was carried out for determining the size, structure and morphology of superconducting phases. It expands knowledge in the field of research of superconducting compounds

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Section: Introductionmentioning

confidence: 99%