Vortex dynamics and second magnetization peak in PrFeAsO0.60F0.12 superconductor
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Vortex dynamics and second magnetization peak in PrFeAsO0.60F0.12 superconductor
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| Creator |
Bhoi, D
Mandal, P Choudhury, Pranab |
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| Subject |
Electronics
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| Description |
We have studied the vortex dynamics in the PrFeAsO0.60F0.12 superconducting sample by dc magnetization and dynamic magnetization-relaxation rate (Q) measurements. The field dependence of the superconducting irreversible magnetization M-s reveals a second magnetization peak or fishtail effect. The large value of Q is an indication of moderate vortex motion and relatively weak pinning energy. Data analysis based on the generalized inversion scheme suggests that the vortex dynamics can be described by the collective pinning model. The temperature dependence of the critical current is consistent with the pinning due to the spatial variation in the mean free path near a lattice defect (delta l-pinning). The temperature and field dependence of Q indicate a crossover from elastic to plastic vortex creep with increasing temperature and magnetic field. Finally, we have constructed the vortex phase diagram based on the present data. (C) 2013 AIP Publishing LLC.
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| Publisher |
American Institute of Physics
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| Date |
2013-05
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/2099/1/pranab.pdf
Bhoi, D and Mandal, P and Choudhury, Pranab (2013) Vortex dynamics and second magnetization peak in PrFeAsO0.60F0.12 superconductor. Journal of Applied Physics, 113 (18). Article No-183902. ISSN 0021-8979 |
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| Relation |
http://cgcri.csircentral.net/2099/
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