Influence of the magnetic field sweep rate on flux creep in melt textured sample of YBa2Cu3O7−d

1997 ◽  
Vol 282-287 ◽  
pp. 2263-2264 ◽  
Author(s):  
K. Frikach ◽  
A. Taoufik ◽  
M. Boudissa ◽  
S. Senoussi ◽  
R. Halimi
1997 ◽  
Vol 251 (1-2) ◽  
pp. 150-155 ◽  
Author(s):  
K. Frikach ◽  
S. Senoussi ◽  
A. Taoufik ◽  
M. Boudissa

2009 ◽  
Vol 152-153 ◽  
pp. 225-228 ◽  
Author(s):  
Alexander Korshunov ◽  
Yu. B. Kudasov ◽  
Dmitry Andreevich Maslov ◽  
V. Pavlov

A two-dimensional Ising-like model for the triangular spin-chain lattice, where each spin chain is treated as a rigid superspin, is proposed to investigate the dynamics of magnetization in frustrated triangular spin-chain systems. The superspins are assumed to interact with the nearest neighbours and external agency (heat reservoir and external magnetic field) that causes them to change their states randomly with time. A probability of a single spin-flip process is assumed in a Glauber-like form. This technique allows describing the steps in the magnetization curves observed in Ca3Co2O6 and their dependence on the magnetic field sweep rate and temperature.


2003 ◽  
Vol 17 (10n12) ◽  
pp. 635-647
Author(s):  
P. Mikheenko ◽  
M. S. Colclough ◽  
R. Chakalov ◽  
K. Kawano ◽  
C. M. Muirhead

We report on a dynamical effect in YBa 2 Cu 3 O x (YBCO) films and YBCO/CMR (Colossal Magnetoresistive) multilayers, in which variations in the magnetic field sweep rate can change, or reverse the sign of, the magnetic moment. The effect occurs in thin films having a low critical current density, either intrinsically or as a result of operation near the critical temperature. We attribute this effect to the large demagnetizing field present in the films, leading to a relaxation in the non-equilibrium vortex distribution, in which current near the edge of the film changes direction. We have investigated this effect in a variety of systems by magnetometery, and provide some magneto-optical evidence of its mechanism.


2017 ◽  
Vol 59 (8) ◽  
pp. 1543-1546
Author(s):  
E. I. Kunitsyna ◽  
O. V. Koplak ◽  
V. V. Kucheryaev ◽  
D. V. Korolev ◽  
V. P. Piskorskii ◽  
...  

2020 ◽  
Vol 128 (7) ◽  
pp. 073902
Author(s):  
A. Galluzzi ◽  
K. Buchkov ◽  
E. Nazarova ◽  
V. Tomov ◽  
A. Leo ◽  
...  

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