| Issue |
Europhys. Lett.
Volume 60, Number 6, December 2002
|
|
|---|---|---|
| Page(s) | 917 - 923 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00305-x | |
| Published online | 01 December 2002 | |
Superconducting transition in ruthenocuprate 
viewed from the studies of the imaginary part of ac
susceptibility
1
Institute of Physics - Bijenicka c.46, POB
304, HR-10000 Zagreb, Croatia
2
Institute of Physics of Complex Matter,
FSB, EPFL - CH-1015 Lausanne, Switzerland
Received:
14
May
2002
Accepted:
2
October
2002
We have measured two structurally similar superconducting
systems, and 
by means
of high-resolution ac susceptibility. The real and the imaginary part of
ac susceptibility of both bulk-ceramic and powdered samples have
been studied down to the very small magnetic-field levels. We
show that there are significant differences in the evolution of
superconductivity in the two studied superconducting systems. In
particular, we show that the superconducting transition in the
grains in system is masked with intrinsic
magnetism of complex origin.
PACS: 74.72.Jt – Other cuprates / 74.25.Ha – Magnetic properties / 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects
© EDP Sciences, 2002
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