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|Title:||Vortex dynamics of (Bi,Pb)2Sr2Ca2Cu3Oy silver-sheathed tape by AC susceptibility measurements|
|Keywords:||(Bi,Pb)2Sr2Ca2Cu3 Oy tape|
|Citation:||Zhang, Y.J., Qin, M.J., Ong, C.K. (2001-01-07). Vortex dynamics of (Bi,Pb)2Sr2Ca2Cu3Oy silver-sheathed tape by AC susceptibility measurements. Physica C: Superconductivity and its Applications 356 (1-2) : 46-52. ScholarBank@NUS Repository. https://doi.org/10.1016/S0921-4534(01)00087-9|
|Abstract:||The complex ac susceptibility (χn=χ′ n- iχ′′ n) measurements were performed on a (Bi,Pb)2Sr2Ca2Cu3Oy silver-sheathed tape to study the vortex dynamics in a time window of 10-4-10-2s. The fundamental ac susceptibility of the tape as a function of temperature, ac field amplitudes and frequencies were obtained. The current dependent activation energy was derived as U(j)∝j-0.42, characteristic of the vortex glass/collective pinning model. By using such U(j) relation, higher harmonic susceptibilities χn (n=2-7) were obtained based on the numerical resolution of the flux diffusion equation. We found that theoretical results agree well with experimental data. © 2001 Elsevier Science B.V.|
|Source Title:||Physica C: Superconductivity and its Applications|
|Appears in Collections:||Staff Publications|
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