Preparation and characterization of the superconductor [Y0.8Ca0.2]SrBaCu2.8(BO3)0.2O6.4 compound
2004; Elsevier BV; Volume: 408-410; Linguagem: Inglês
10.1016/j.physc.2004.02.052
ISSN1873-2143
AutoresVíctor H. Barinotto C., B. Willems, Ángel Bustamante, L. De Los Santos Valladares, Juan Gonzalez G,
Tópico(s)Geological and Geochemical Analysis
ResumoWe report the study of the [Y0.8Ca0.2]SrBaCu2.80(BO3)0.2O6.4 compound which is a superconductor with critical temperature of 45 K. This compound was prepared by the solid state reaction method under normal conditions of pressure and temperature, replacing 0.2 of oxianion borate (BO3)3− in the copper site of [Y0.8Ca0.2]SrBaCu3O7−δ. TC was determined by measuring the magnetic susceptibility using a SQUID detection system. The X-ray difractogram revealed a monophasic pattern, Rietveld analysis suggested an orthorhombic crystalline structure belonging to the Pmmm spatial group with a=3.826 Å, b=3.861 Å and c=11.561 Å.
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