Advertisement
Published in:
01-01-2015
Improvement of superconducting properties in Na-doped BSCCO superconductor
Published in: Journal of Materials Science: Materials in Electronics | Issue 1/2015
Log inActivate our intelligent search to find suitable subject content or patents.
Select sections of text to find matching patents with Artificial Intelligence. powered by
Select sections of text to find additional relevant content using AI-assisted search. powered by
Abstract
In this study, the effect of Na substitution on the structural, electrical and magnetic properties of Bi2Sr2Ca1−xNaxCu2O8+y superconductor with x = 0.0, 0.05, 0.075, 0.1, 0.15, and 0.2 has been investigated. The effects of partial replacement of Na for Ca have been investigated by electrical resistivity (ρ–T), scanning electron microscopy (SEM), X-ray diffraction (XRD), and magnetic characterizations. XRD results have shown that the Bi-(2212) phase is the major one independently of the Na-concentration. SEM results indicate that the microstructure of samples is improved with increasing of Na-contents. From the electrical resistivity measurements it has been found that Tc is slightly higher than 92 K for Na-concentrations up to 0.20. Moreover, this trend is maintained in the magnetic measurements where the hysteresis loops are increased with increasing Na-concentrations. The maximum calculated Jc, using Bean’s model, is around 10 × 106 A/cm2 at 10 K and ~1,000 Oe for the 0.075 Na doped samples.