We report the study of the [Y0.8Ca0.2]SrBaCu 2.80(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]SrBaCu3O 7-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.
|Number of pages||2|
|Journal||Physica C: Superconductivity and its Applications|
|State||Published - Aug 2004|
|Event||Proceedings of the International Conference on Materials - Rio de Janeiro, Brazil|
Duration: 25 May 2003 → 30 May 2003
Bibliographical noteFunding Information:
This work was undertaken at the Universidad Nacional Mayor de San Marcos and was supported by its Consejo Superior de Investigación. J.C. Gonzalez thanks Dr. X. Obradors from ICMAB Spain, for the SQUID measurement and to AECI Spain for awarding a fellowship to pursue his doctoral support.
Copyright 2009 Elsevier B.V., All rights reserved.
- Rietveld analysis