INVESTIGADORES
LEVY Pablo Eduardo
artículos
Título:
AC susceptibility characterisation of Bi-Sr-Ca-Cu-O (2212) single crystals: annealing effects
Autor/es:
A.J. MORENO, A.G. LEYVA, G. POLLA, P. LEVY, D. VEGA AND E. MANGHI
Revista:
SOLID STATE IONICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: New York; Año: 1997 vol. 99 p. 251 - 256
ISSN:
0167-2738
Resumen:
Abstract
Single crystals of Bi2Sr2CaCu2Ox
have been grown by directional solidification method in order to
analyze annealing effects on critical superconducting temperature (Tc)
by AC susceptibility measurements. Structural modifications were
studied by X-ray diffraction. A decrease of the transition width was
observed in samples treated in oxygen or argon atmospheres at 500 °C
for 10 h. Higher Tc values were obtained for argon annealings. The magnitude of Tc changes and its correlation with c lattice parameter is found to be sample-dependent.
Keywords: Superconductivity; Single crystal; 2212 system; Annealing effect; AC susceptibility
