7th IMRMPT

Abstract

Abstract information

English title:	Ni and Zn-doped YBCO nanowires produced by the Solution Blow Spinning technique.
Spanish title:	Nanohilos YBCO dopados con Ni y Zn producidos por la t�cnica Solution Blow Spinning.
English abstract:	To investigate the effects of magnetic (Ni) and non-magnetic (Zn) doping on the YBa2Cu3O(7-x) (Y123) superconductor, fibers of the material were produced using the Solution Blow-Spinning (SBS) technique. This technique is advantageous over other methods for producing materials on a small scale, mainly due to the high productivity rate. Therefore, the precursor solution to be fibered must have an optimal viscosity for the technique to be effective. In this sense, polyvinyl(pyrrolidone) [PVP] is a stabilizing polymer in the synthesis of metallic materials and gives the solution levels of viscosity that can be controlled by the polymer concentration in the solution or by its molar mass. Thus, YBa2Cu(3-n)Xn solutions were prepared, where X = Ni or Zn and n = 0.01; 0.02 and 0.04, using metallic acetates and solvents (methanol, propionic acid, and acetic acid). After being blown in SBS, the fibers were collected in a non-woven fabric, and thermal treatments were carried out for calcination and sintering. SEM characterizations show a decreasing average fiber diameter after the heat treatment for small than 500 nm. XRD shows that the PVP molar mass does not interfere with the material's phase formation, and all samples showed the BaCuO secondary phase. Furthermore, the doping elements were not identified in the X-ray characterization, suggesting that they may have entered the material's composition. From the Rietveld refinement, the Y123 and BaCuO phases are confirmed, and apparently, there is a change in the unit cell volume for samples with higher concentrations of dopants. However, these conclusions will be confirmed, for example, by magnetically characterizing the samples.
Spanish abstract:	Para investigar los efectos del dopaje magn�tico (Ni) y no magn�tico (Zn) en el superconductor YBa2Cu3O(7-x) (Y123), se produjeron fibras del material utilizando la t�cnica Solution Blow-Spinning (SBS). Esta t�cnica es ventajosa sobre otros m�todos para producir materiales a peque�a escala, principalmente debido a la alta tasa de productividad. Por lo tanto, la soluci�n precursora a fibrar debe tener una viscosidad �ptima para que la t�cnica sea efectiva. En este sentido, la polivinil(pirrolidona) [PVP] es un pol�mero estabilizador en la s�ntesis de materiales met�licos y otorga a la soluci�n niveles de viscosidad que pueden ser controlados por la concentraci�n de pol�mero en la soluci�n o por su masa molar. As�, se prepararon soluciones de YBa2Cu(3-n)Xn, donde X = Ni o Zn y n = 0.01; 0,02 y 0,04, utilizando acetatos met�licos y disolventes (metanol, �cido propi�nico y �cido ac�tico). Luego de ser sopladas en SBS, las fibras fueron recolectadas en una tela no tejida, y se realizaron tratamientos t�rmicos de calcinaci�n y sinterizaci�n. Las caracterizaciones SEM muestran un di�metro de fibra promedio decreciente despu�s del tratamiento t�rmico por menos de 500 nm. XRD muestra que la masa molar de PVP no interfiere con la formaci�n de fase del material, y todas las muestras mostraron la fase secundaria de BaCuO. Adem�s, los elementos dopantes no se identificaron en la caracterizaci�n por rayos X, lo que sugiere que pueden haber entrado en la composici�n del material. A partir del refinamiento de Rietveld, se confirman las fases Y123 y BaCuO y, aparentemente, hay un cambio en el volumen de la celda unitaria para muestras con concentraciones m�s altas de dopantes. Sin embargo, estas conclusiones se confirmar�n, por ejemplo, mediante la caracterizaci�n magn�tica de las muestras.
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Authors

Name	Institution	Email
Milton Batista Ferreira Junior	Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteira, S�o Paulo, Brazil	milton.jr@unesp.br
Davi Araujo Dalbuquerque Chaves	Universidade Federal de S�o Carlos, UFSCar	davi@df.ufscar.br
Maycon Motta	Universidade Federal de S�o Carlos, UFSCar	Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteira, S�o Paulo, Brazil
Wilson Aires Ortiz	Universidade Federal de S�o Carlos, UFSCar	wortiz@df.ufscar.br
Rafael Zadorosny	Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteira, S�o Paulo, Brazil	rafael.zadorosny@unesp.br

Presentation

Room:	Principal Room
Date:	June 9, 2023
Hour:	11:00 - 11:20

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7^th IMRMPT
Seventh International Meeting for Researchers in Materials and Plasma Technology

Previous editions:

        1st IMRMPT 2011
        2nd IMRMPT 2013
        3rd IMRMPT 2015
        4th IMRMPT 2017
        5th IMRMPT 2019
        5+1 IMRMPT 2021

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