Effects of glucose doping on the MgB2 superconductors using cheap crystalline boron
| Autor: | Niyaz Ahmad Madhar, Nasser S. Alzayed, Muhammad Ali Shar, M. Shahabuddin Shah, Mohammed Shahabuddin, Salem A. S. Qaid, Jafar M. Parakkandy, Shahid M. Ramay |
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| Rok vydání: | 2015 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Scattering Doping Energy Engineering and Power Technology Condensed Matter Physics Microstructure Electronic Optical and Magnetic Materials Electrical resistivity and conductivity Impurity Condensed Matter::Superconductivity Electrical and Electronic Engineering Pinning force Critical field |
| Zdroj: | Physica C: Superconductivity and its Applications. 519:137-141 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/j.physc.2015.10.003 |
| Popis: | We report the effect of glucose (C 6 H 12 O 6 ) doping on the structural and electromagnetic properties of MgB 2 superconductor fabricated by dry mixing using planetary ball milling. Herein, as-prepared bulk polycrystalline Mg (B 1 – x C x ) 2 samples with different doping levels ( x = 0, 2, 4, and 6 at. %) were systematically studied by X-ray diffraction, magnetic and resistivity measurements, and microstructure analysis. When carbon doped, the reduction in critical transition temperature and shrinkage in a -lattice were obviously observed. This resulted in structural distortion of the MgB 2 lattice, and thereby, enhanced an impurity scattering. In addition to these, upper critical field and high-field critical current densities were also enhanced. On the other hand, both pinning force and low-field critical current density are decreased. The high field enhancement and low field degradation are due to increase in impurity scattering and decrease in pinning force respectively. |
| Databáze: | OpenAIRE |
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