INVESTIGADORES
NIEVA Gladys Leonor
artículos
Título:
Meissner fraction in insulating samples of oxide superconductors
Autor/es:
CIVALE, L.; PASTORIZA, H.; DE LA CRUZ, F.; GUIMPEL, J.; NIEVA, G.; HEINTZ, J.M.; DURMEYER, O.; KAPPLER, J.P.
Revista:
SOLID STATE COMMUNICATIONS
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 1989 vol. 72 p. 341 - 344
ISSN:
0038-1098
Resumen:
The tendency towards superconducting granularity with sample degradation is a common feature of oxide superconductors. We present magnetic, transport and calorimetic results in LiTi2O4 which show that the topological tendency to segregate the superconducting state into islands surrounded by thin insulating layers is related to the structure of the material rather than to a mechanism associated to high Tc. We emphasize that insulating samples with small Meissner fraction can have a superconducting volume fraction close to unity. © 1989.
