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

Autor(es)

Rotta, Maycon ^{[1, 2]} ; Motta, Maycon ^[3] ; Pessoa, Alexsander Lourenco ^[1] ; Carvalho, Claudio Luiz ^[1] ; Deimling, Cesar Vanderlei ^[4] ; Lisboa-Filho, Paulo Noronha ^[5] ; Ortiz, Wilson Aires ^[3] ; Zadorosny, Rafael ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Fac Engn, UNESP, Dept Fis & Quim, Caixa Postal 31, BR-15385000 Ilha Solteira, SP - Brazil

^[2] Inst Fed Educ Ciencia & Tecnol Mato Grosso do Sul, Campus Tres Lagoas, BR-79641162 Tres Lagoas, MS - Brazil

^[3] Univ Fed Sao Carlos UFSCar, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil

^[4] Univ Tecnol Fed Parana UTFPR, Dept Acad Fis, BR-87301899 Campo Mourao, PR - Brazil

^[5] Univ Estadual Paulista, Fac Ciencias, Dept Fis, UNESP, Caixa Postal 473, BR-17033360 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Chemistry and Physics; v. 243, MAR 1 2020.
• Citações Web of Science: 0

Resumo

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 onepot-like synthesis adapted to produce YBa2Cu3O7-delta 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. (AU)

• Processo FAPESP: 16/12390-6 - Supercondutividade em escalas macro e mesoscópica: síntese de materiais cerâmicos e simulações computacionais usando a teoria TDGL
• Beneficiário: Rafael Zadorosny
• Modalidade de apoio: Auxílio à Pesquisa - Regular