Otro
Magnetic response of superconducting mesoscopic-size YBCO powder
Registro en:
Journal of Magnetism and Magnetic Materials. Amsterdam: Elsevier B.V., v. 320, n. 14, p. E507-E509, 2008.
0304-8853
10.1016/j.jmmm.2008.02.137
WOS:000255512600150
Autor
Deimling, C. V.
Motta, M.
Lisboa Filho, Paulo Noronha
Ortiz, W. A.
Resumen
In this work it is reported the magnetic behavior of submicron and mesoscopic-size superconducting YBCO powders, prepared by a modified polymeric precursors method. The grain size and microstructure were analyzed using scanning electron microscopy ( SEM). Measurements of magnetization and AC-susceptibility as a function of temperature were performed with a quantum design SQUID magnetometer. Our results indicated significant differences on the magnetic propreties, in connection with the calcination temperature and the pressure used to pelletize the samples. This contribution is part of an effort to study vortex dynamics and magnetic properties of submicron and mesoscopic-size superconducting samples. (C) 2008 Elsevier B. V. All rights reserved.