INVESTIGADORES
SERQUIS Adriana Cristina
artículos
Título:
Magnetic irreversibility of (Hg,Re)Ba2CuO4+δ: Effects of oxygen and Re
Autor/es:
L. FABREGA; J. FONTCUBERTA; A. SERQUIS; A. CANEIRO
Revista:
PHYSICA C - SUPERCONDUTIVITY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2001 vol. 356 p. 254 - 260
ISSN:
0921-4534
Resumen:
The magnetic irreversibility of (Hg,Re)-1201 ceramics with different oxygen and rhenium contents has been analyzed. It is shown that Re incorporation results in a monotonous decrease of the hysteresis width ΔM and a progressively dominant contribution of surface barriers, as deduced from the field dependence of ΔM. Conversely, oxygen doping enhances the magnetic irreversibility; this is attributed to a decrease of the superconductor anisotropy.
