Bulk superconductor samples of YBa2Cu3-xZnxO7-{\delta} with x = 0, 0.01, 0.03 are synthesized by solid-state reaction route. The structural characterisation of all samples has been carried out by x-ray-diffraction (XRD) and transmission electron microscopy (TEM) techniques. The x-ray diffraction patterns indicate that the gross structure/phase of YBa2Cu3-xZnxO7-{\delta} do not change with the substitution of Zn up to x=0.03. In TEM investigations of Zn-doped Y-based cuprates a number of ZnO nano-flower and nano-rod of Y-211 phase are found dispersed in regular YBa2Cu3-xZnxO7 matrix. These dispersed nano-flowers of ZnO and nano-rods of Y-211 phase may serve as flux-pinning centers. These pinning centers enhance critical current density (Jc) value of these HTSC samples.
@article{arxiv.1107.1116,
title = {Flux Pinning by Nano Particles Embedded in Polycrystalline Y-123 Superconductors},
author = {Sushant Gupta and R. S. Yadav and B. Das},
journal= {arXiv preprint arXiv:1107.1116},
year = {2012}
}
Comments
Accepted for Publication in ISST Journal of Applied Physics (IJAP)