Correlation between superconductivity and structure in the [Y1−xPrx]Ba2Cu3O7 system

• Autores: Flores, Jesús, Bustamante, Angel, Feijoo, Juan, González, J. C., Sánchez, Dalbert, C. Cernicchiaro, Geraldo R.
• Formato: artículo
• Fecha de Publicación: 2011
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revistas - Universidad Nacional Mayor de San Marcos
• Lenguaje: español
• OAI Identifier: oai:ojs.csi.unmsm:article/8698
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/8698
• Nivel de acceso: acceso abierto
• Materia: Refinamiento Rietveld; dopaje de praseodimio; supresión de la superconductividad; Rietveld refinement; Praseodymium doping; superconductivity suppression.

A structural study of the incorporation of Pr-ion into the Y-site was realized in polycrystalline samples of [Y1−xPrx]Ba2Cu3O7 through of Rietveld analysis of X-ray diffraction patterns, bond valence method and electronic density diagrams correlating its doping effects on the superconducting properties. The oxygen content was checked by means of μ-Raman spectroscopy, observing the frequency position of OO4-Ag phonon mode, and establishing a relationship among the O4-Ag mode frequency and the two copper sites, Cu(1) and Cu(2). Two regions are observed with Pr-rich and Y-rich microstructures.