Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Zola, D"'
Publikováno v:
Phys. Rev. B 82, 024512 (2010)
We measure current-voltage characteristics as function of magnetic field and temperature in Nb strips of different thickness and width. The instability voltage of the flux flow state related to the vortex critical velocity v* is studied and compared
Externí odkaz:
http://arxiv.org/abs/1006.2251
Losses as function of the a.c. magnetic field amplitude ($B_0$) were measured at 77 K in untwisted BSCCO(2223)/Ag tapes, at different frequencies, by measuring the imaginary part of the a.c. susceptibility. In particular, loss measurements were perfo
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410548
The magnetic relaxation has been investigated in type II superconductors when the initial magnetic state is realized with entrapped and shielded flux (ESF) contemporarily. This flux state is produced by an inversion in the magnetic field ramp rate du
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408045
Autor:
Zola, D., Gomory, F., Polichetti, M., Strycek, F., Seiler, E., Husek, I., Kovac, P., Pace, S.
Coupling losses were studied in composite tapes containing superconducting material in the form of two separate stacks of densely packed filaments embedded in a metallic matrix of Ag or Ag alloy. This kind of sample geometry is quite favorable for st
Externí odkaz:
http://arxiv.org/abs/cond-mat/0310158
The flux lines dynamics have been investigated on MgB2 bulk superconductors obtained by reactive liquid infiltration by measuring the ac magnetic susceptibility. The fundamental and third harmonics have been studied as a function of temperature, dc m
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207580
Low frequency transport measurements are performed on GdSr$_2$RuCu$_2$O$_8$ pellets. The observed current-voltage curves are qualitatively explained in the framework of a simple phenomenological model accounting for coexistence of ferromagnetism and
Externí odkaz:
http://arxiv.org/abs/cond-mat/0112364
We report the magnetization and the susceptibility measurements of the RuSr_2GdCu_2O_y and RuSr_2NdCu_2O_x perovskite materials. We find that RuSr_2GdCu_2O_y compound exhibits a magnetic transition at Tn=135 K followed by a superconducting one with a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110482
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Publikováno v:
In Materials Science & Engineering B 15 May 2013 178(9):586-592
Publikováno v:
In Physica C: Superconductivity and its applications July 2012 477:36-42