INVESTIGADORES
CANEIRO Alberto
artículos
Título:
Synthesis method, control of cationic composition and superconducting behavior of Nd1.85Ceo.15Cu 1 +
Autor/es:
A. SERQUIS; F. PRADO; A. CANEIRO
Revista:
PHYSICA C - SUPERCONDUTIVITY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 1995 vol. 253 p. 339 - 350
ISSN:
0921-4534
Resumen:
Samples of Ndl.ssCe0.15Cu 1 ± 8Oy (0.99 < 1 __. 8 ~< 1.02) were prepared by a solid-state reaction (SSR), nitrate-decompositionmethod (NDM) and liquid-mix method (LMM) and characterized by XRD, SEM, EPMA, DTA and DCmagnetization. The control of Cu content, substitutional impurities and Ce homogeneity depends on the synthesis method,which modifies the microstructure and the superconducting behavior of these materials. Our results show that inNdl.85Ceo.lsCu ~ + 8Oy small variations of 8 strongly affect the superconducting properties. For 1 + ~ > 1.00 the Meissnerfraction and the superconducting transition are substantially improved.
