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- Title
Fluctuation-Induced Conductivity of Carbon in Glucose-Doped MgB Superconductor.
- Authors
Ansari, Intikhab; Parakkandy, Jafar; Shahabuddin Shah, M.; Shahabuddin, Mohammed; Alzayed, Nasser
- Abstract
Fluctuation-induced conductivity (FIC) of glucose as a carbon-doped MgB sample was investigated in the presence of a magnetic field in the range of 0-14T. Different concentrations (0-8%) of glucose-doped MgB samples were prepared using planetary dry ball milling and then employed standard solid-state reaction method on these samples. The prepared samples were characterized by X-ray diffractometer. The resistive transition broadening of all the samples becomes wider as the magnetic field was increased. The results of doped MgB explained in terms of temperature derivative of the resistivity, d $${\rho/{\rm d}T}$$ with temperature. The mean field transition temperature ( $${T_{{c}}^{{\rm mf}}}$$ ) has been taken from the peak of the temperature derivative of resistivity plot for different doped samples. It is clear that $${T_{{c}}^{{\rm mf}}}$$ of d $${\rho/{\rm d}T}$$ shifted to lower temperature region as we increase the magnetic field of the doped samples. Lawrence and Doniach model has been employed for the present study. The variation of FIC against inverse reduced temperature ( $${{\varepsilon}^{-1})}$$ for different concentrations of glucose-doped MgB samples was measured with varying applied field. The enhancement of coherence length observed as we decrease the value of T and $${T_{{c}}^{{\rm mf}}}$$ for 5 and 8% C in glucose-doped MgB samples when subjected to a different field.
- Subjects
MAGNESIUM compounds; CARBON; MAGNETIC field effects; DOPED semiconductors; FLUCTUATIONS (Physics); X-ray diffraction
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2017, Vol 42, Issue 1, p383
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-016-2164-9