Investigation of the influence of grain boundary on the magnetic properties of superconducting ceramics of Sm-123

Investigation of the influence of grain boundary on the magnetic properties of superconducting ceramics of Sm-123

Pinto, J. N. O.; Passos, C. A. C.; Orlando, M. T. D.; Rouver, A. N.

Artigo Completo :

Samples of SmBa2Cu3O7-d (Sm-123) were prepared by the technique of solid vapor reaction with three different procedures. The samples were subjected to preliminary heat treatment, whose level was 960 ° C for 24 hours, which was repeated 7 times for sample A. Then they were subjected to further heat treatment at 1060°C level at which the samples A and B had a synthesis time of 72 hours, and sample C of 30 minutes. Then, the samples were cooled naturally to 520°C for oxygenation process. All samples were characterized by XRD, SEM and ac magnetic susceptibility measurements. SEM''s of different average sizes for each sample junction, which influenced the ac magnetic susceptibility measurements.

Samples of SmBa2Cu3O7-d (Sm-123) were prepared by the technique of solid vapor reaction with three different procedures. The samples were subjected to preliminary heat treatment, whose level was 960 ° C for 24 hours, which was repeated 7 times for sample A. Then they were subjected to further heat treatment at 1060°C level at which the samples A and B had a synthesis time of 72 hours, and sample C of 30 minutes. Then, the samples were cooled naturally to 520°C for oxygenation process. All samples were characterized by XRD, SEM and ac magnetic susceptibility measurements. SEM''s of different average sizes for each sample junction, which influenced the ac magnetic susceptibility measurements.

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DOI: 10.5151/phypro-ecfa-044

Referências bibliográficas

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Como citar:

Pinto, J. N. O.; Passos, C. A. C.; Orlando, M. T. D.; Rouver, A. N.; "Investigation of the influence of grain boundary on the magnetic properties of superconducting ceramics of Sm-123", p-94-95. In: Anais do V Encontro Científico de Física Aplicada [= Blucher Physics Proceedings, n.1, v.1]. São Paulo: Blucher, 2014.
ISSN 23582359, DOI 10.5151/phypro-ecfa-044