Magnetic flux creep measurements on a Bi2223/Ag tape

1994 ◽  
Vol 235-240 ◽  
pp. 2869-2870 ◽  
Author(s):  
M. Reissner ◽  
S. Schwaiger ◽  
W. Steiner ◽  
G. Fuchs ◽  
A. Gladun ◽  
...  
1991 ◽  
Vol 185-189 ◽  
pp. 2507-2508 ◽  
Author(s):  
C.J. Van Der Beek ◽  
P.H. Kes ◽  
M.P. Maley ◽  
M.J.V. Menken ◽  
A.A. Menovsky

2006 ◽  
Vol 32 (8) ◽  
pp. 832-837 ◽  
Author(s):  
M. P. Chornomorets ◽  
D. G. Kovalchuk ◽  
S. M. Ryabchenko ◽  
A. V. Semenov ◽  
E. A. Pashitskii

1995 ◽  
Vol 09 (09) ◽  
pp. 1045-1065 ◽  
Author(s):  
A. GUREVICH

A review of recent results on nonlinear diffusion of magnetic flux in high-Tc superconductors is given. Making use of a universality of thermally-activated flux diffusion, one can formulate the problem of macroscopic flux dynamics in terms of directly measured quantities. A hierarchy of flux creep time-scales and their dependence on initial and boundary conditions is considered. The essential effect of the sample geometry on the flux creep dynamics is discussed for a thin plate in a parallel and perpendicular magnetic field, which corresponds to local and nonlocal regimes of nonlinear flux diffusion, respectively. Both transient and steady-state regimes of flux creep are discussed. Instabilities of flux diffusion in anisotropic superconductors are considered which are give rise to a dissipative transition of the uniform critical state to either static macrovortex structures or magnetic flux turbulence. Manifestations of nonlinear flux diffusion in observed macroscopic electrodynamics of high-Tc superconductors are discussed.


1991 ◽  
Vol 185-189 ◽  
pp. 2517-2518 ◽  
Author(s):  
Y. Sakaguchi ◽  
M. Kikuchi ◽  
N. Kobayashi ◽  
K. Kusaba ◽  
K. Fukuoka ◽  
...  

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