Experimental Investigation of YBCO Lattice Parameters with Alumina Nanoparticles Doping

The influence of nano-sized Al2O3 particles doping on the lattice parameters of YBCO superconductor samples was investigated. Specimens of YBa2Cu3O7-δ with slight amounts of Al2O3 nanoparticles (0000 – 0000 wt%) are synthesized by conventional solid state reaction method. The structural characterization of all samples has been carried out by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The XRD patterns demonstrates that lattice constant parameters changed and the orthorhombicity declined slightly with Al2O3 addition. No variation in the structural symmetry state was found. SEM analysis were used to characterize the samples crystal structure and distribution of Al2O3nanoparticles along the YBCO grain boundaries. Furthermore, SEM micrographs indicate that the grain size of ceramic samples decreased with increment of nano alumina. The incorporation of aluminum into crystal structural of Y-123 specimens is caused that Al3+ ions can occupy both copper in Cu (1) chains and yttrium (Y) atoms. Our research reveals a better understanding about performance of nanoparticles doping such as nano alumina on YBCO lattice constants that can modify superconducting parameters.

کلیدواژه ها:

YBCO ، Al2O3 nanoparticles ، Lattice parameters