Studies on La2−xPrxCayBa2Cu4+yOz (x=0.1–0.5, y=2x) type mixed oxide superconductors

✍ Scribed by S. Rayaprol; K.R. Mavani; D.S. Rana; C.M. Thaker; Manglesh Dixit; Shovit Bhattacharya; D.G. Kuberkar

• Book ID: 104166351
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 200 KB
• Volume: 128
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/s0038-1098(03)00658-6

✦ Synopsis

The La 22x Pr x Ca y Ba 2 Cu 4þy O z (LaPrCaBCO) mixed oxides have been studied for their structural and superconducting properties using X-ray diffraction (XRD), d.c. resistivity, d.c. susceptibility and iodometric double titration techniques. The Rietveld analysis of the XRD data of all the LaPrCaBCO samples ðx ¼ 0:1 -0:5Þ exhibits that all the compounds crystallize in tetragonal R-123 type structure (space group P4=mmm). With the increase in x; T c increases up to a maximum value of 58 K (x ¼ 0:5; La-2125 stoichiometry), which is interesting for Pr substituted high T c oxides. The results of structural studies and superconducting property measurements are presented in light of increase in T c in LaPrCaBCO system with increasing Pr concentration.