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Flux dynamics in ( Y , Nd ) 1 Ba 2 Cu 3 O 7 − δ superconductors
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mahmoud, Ahmed Salem Horvat, Josip |
| Copyright Year | 2017 |
| Abstract | The vortex dynamics of (Y, Nd)Ba2Cu3O7−δ ((Y, Nd)123) superconductors have been studied using magnetic relaxation measurements obtained at different sweep rates. The temperature dependence of the dynamic relaxation rate (Q) is found to be not vanishing at T = 0 K, and also showed well developed maxima becoming broader and tending to move to higher temperatures with decreasing magnetic field. At temperatures close to the critical temperature (Tc), Q(T ) showed well-developed minima becoming deeper and tending to move to lower temperatures with increasing field. These minima appeared to occur approximately at the same reduced temperature position [T/Tc] as that of oxygen-controlled-melt-grown (OCMG)-Nd(123) samples, thus providing further support for pinning similarities between both systems. Both the field dependence of the characteristic pinning energy [Uc] and relaxation rate showed significant inconsistency with the collective pinning theory but full agreement with the results of [Perkins et al., Phys. Rev. B 54, 12551 (1996)]. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://ro.uow.edu.au/cgi/viewcontent.cgi?amp%3Bcontext=engpapers&article=6292 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
