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- Title
Flux Pinning by Cr Nanoparticles in Cu $$_{0.5}$$ Tl $$_{0.5}$$ Ba $$_{2}$$ Ca $$_{2}$$ Cu $$_{3}$$ O $$_{10-\delta }$$ Superconductor.
- Authors
Waqee-ur-Rehman, M.; Mumtaz, M.; Qasim, Irfan; Nadeem, K.
- Abstract
Increase in flux pinning strength of Cu $$_{0.5}$$ Tl $$_{0.5}$$ Ba $$_{2}$$ Ca $$_{2}$$ Cu $$_{3}$$ O $$_{10-\delta }$$ (CuTl-1223) superconductor has been observed after addition of Cr nanoparticles. We have thoroughly investigated the infield response of Cr nanoparticles-added CuTl-1223 superconductor in an external applied magnetic field in the range of 0-7 T. Solid-state reaction technique has been employed to synthesize (Cr) $$_{x}$$ -CuTl-1223; x = 0-1.00 wt% nanoparticle-superconductor composites. The flux pinning mechanism has been analyzed on the basis of thermally activated flux flow model in the presence of a small current (10 $$\upmu $$ A). The increase in activation energy and decrease in transition width of CuTl-1223 superconducting phase show the enhancement in its flux pinning strength upon the addition of Cr nanoparticles.
- Subjects
FLUX pinning; NANOPARTICLES; SUPERCONDUCTORS; CHROMIUM; ACTIVATION energy
- Publication
Journal of Low Temperature Physics, 2016, Vol 184, Issue 5/6, p997
- ISSN
0022-2291
- Publication type
Article
- DOI
10.1007/s10909-016-1607-8