One-pot-like facile synthesis of YBa2Cu3O7-δ superconducting ceramic: Using PVP to obtain a precursor solution in two steps

• Autor(a) principal: Rotta, Maycon [UNESP]
• Data de Publicação: 2020
• Outros Autores: Motta, Maycon, Pessoa, Alexsander Lourenço [UNESP], Carvalho, Claudio Luiz [UNESP], Deimling, Cesar Vanderlei, Lisboa-Filho, Paulo Noronha [UNESP], Ortiz, Wilson Aires, Zadorosny, Rafael [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.matchemphys.2019.122607; http://hdl.handle.net/11449/199900
• topic: Acetates; Ceramic; One-pot; Sol-gel; Superconductor

There are a variety of chemical routes used to produce advanced ceramic materials. The sol-gel-like methods are widely applied since the final samples present high stoichiometric and grain size homogeneity. However, with the search for sustainable practices, researchers have been worked in the so-called one-pot synthesis, where all the chemical reactions occur in a single vessel with low residue production. Thus, in this work, we used a one-pot-like synthesis adapted to produce YBa2Cu3O7-δ superconducting ceramic samples. One shows that, in two main steps, a polymer solution is prepared in a few hours, and after heat treatments, a single-phase material is obtained. It is shown that the one-pot-like samples can present a higher diamagnetic signal in comparison with specimens prepared by the well-known Pechini Method. With this work, we show that there are alternative routes to produce advanced ceramics with simple and secure methods, if we compare, e.g., with trifluoroacetate routes.