INVESTIGADORES
STEREN Laura Beatriz
artículos
Título:
Stabilization of the tetragonal phase of Y1Ba2Cu3O7-delta through the addition of Fe impurities
Autor/es:
MARIA TERESA CAUSA; SILVIA DUTRUS; CARLOS FAINSTEIN; HORACIO SALVA; LAURA B. STEREN; MANUEL TOVAR; ROBERTO ZYSLER
Revista:
JOURNAL OF APPLIED PHYSICS
Editorial:
AMER INST PHYSICS
Referencias:
Año: 1988 vol. 63 p. 4164 - 4166
ISSN:
0021-8979
Resumen:
We report normal and superconducting properties of Fe‐doped YBa2Cu3O7−δ.
Results from x‐ray powder diffraction, electrical resistivity, magnetic
susceptibility, and ESR measurements are presented. The structural
effects of doping are described and their correlation with the change in
superconducting properties is discussed. Similarities with the
superconducting properties of oxygen deficient YBa2Cu3O7−δ
are analyzed. The comparison of the average distance between impurities
(or oxygen vacancies) with the coherence length of the material
suggests the existence of a nonhomogeneous order parameter in the region
of low concentration of defects.
