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- Title
Fluctuation induced conductivity of polycrystalline MgB<sub>2</sub> superconductor.
- Authors
Ansari, Intikhab A.; Awana, V. P. S.; Rawat, Rajeev; Shahabuddin, M.; Husain, M.; Kishan, H.; Narlikar, A. V.
- Abstract
We report fluctuation-induced conductivity (FIC) of the polycrystalline MgB2 superconductor in the presence of magnetic field. The results are described in terms of the temperature derivative of the resistivity, dρ/ dT. The dρ/ dT peak temperature observed for H = 0 Tesla at 39 K remains very distinct under applied fields of 6 Tesla and 8 Tesla at 22 and 20 K respectively. Aslamazov and Larkin (AL) equations are used to explain the anisotropic nature of the polycrystalline MgB2. The effective coherence length, ξ p (0) determined experimentally is 55.17 Å, which roughly matches with previously reported experimental work.
- Subjects
THERMAL conductivity; SUPERCONDUCTIVITY; POLYCRYSTALLINE semiconductors; MAGNETIC fields; ANISOTROPY; EQUATIONS
- Publication
Journal of Materials Science, 2007, Vol 42, Issue 15, p6306
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-006-1174-5