Synthesis of Bi-based superconductor by microwave-assisted hydrothermal method

11th European Conference on Applied Superconductivity

Lima, R.G.^1 ; Rodrigues, V.D.^1 ; Carvalho, C.L.^1 ; Teixeira, S.R.^2 ; Souza, A.E.^2 ; Zadorosny, R.^1

Depto de Fisica e Química, Faculdade de Engenharia de Ilha Solteira, Univ Estadual Paulista-UNESP, Caixa Postal 31, Ilha Solteira, SP

15385-000, Brazil^1

Depto de Fisica, Química e Biologia, Faculdade de Ciencias e Tecnologia, Univ Estadual Paulista-UNESP, Presidente Prudente, SP, Brazil^2

关键词: Bi-based super conductors;    Chemical reagents;    Distribution of grains;    Magnetic behaviour;    Microwave-assisted hydrothermal;    Reference samples;    Superconducting phase;    Superconducting properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/1/012053/pdf
DOI  :  10.1088/1742-6596/507/1/012053

来源: IOP

【 摘 要 】

In this work we studied the synthesis of BSCCO-2212 superconducting phase associating a quite similar method developed by Pechini with the microwave-assisted hydrothermal method. To study the influence of the microwaves on the properties of BSCCO system, we synthesized two samples by such method. For one sample we used carbonates and for the other one we used nitrates as chemical reagents. We also produced a reference sample just using carbonates by Pechini s method to compare their morphological and superconducting properties. The structural properties of the samples were analyzed by scanning electron microscopy and X-ray diffraction. The Bi-2212 phase is predominant in all samples and despites the nitrates-like sample has a broader distribution of grain size in comparison with the reference sample, its magnetic behaviour is closer to that presented by the reference one.