caa a22 4500 445379847 CHVBK 20180317143014.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10948-011-1162-0 doi (NATIONALLICENCE)springer-10.1007/s10948-011-1162-0 Enhanced Critical Current Density in MgB2 Superconductor via Si and C Coadditions [Elektronische Daten] [K. Tan, K. Tan, K. Tan, K. Lim, S. Halim, S. Chen] In this study, nanosize Silicon and Carbon (Si+C) were reacted with MgB2 in order to enhance the critical current density. The polycrystalline bulks were synthesized by the direct insitu reaction method and their phase formation, crystal structure, and superconducting properties were evaluated. The enhanced relative peak intensity of Mg2Si and MgB4 indicates the formation of a large volume fraction of these two phases with increasing (Si+C) additions. The a-axis lattice parameter shrinks significantly while c-axis increases slightly. The estimated C doping level at B site increases, leading to a degradation of the superconducting transition temperature with increasing (Si+C) additions. By a reaction with (Si+C), the field dependence of critical current density is shown to enhance at both 5K and 20K. Springer Science+Business Media, LLC, 2011 MgB2 nationallicence Carbon doping nationallicence Critical current density nationallicence Tan K. Department of Physics, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut Tan K. Department of Chemistry, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut Lim K. Department of Physics, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut Halim S. Department of Physics, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut Chen S. Department of Physics, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/6(2011-08-01), 2025-2029 1557-1939 24:6<2025 2011 24 10948 https://doi.org/10.1007/s10948-011-1162-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-011-1162-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tan K. Department of Physics, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut NATIONALLICENCE 700 1- Tan K. Department of Chemistry, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut NATIONALLICENCE 700 1- Lim K. Department of Physics, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut NATIONALLICENCE 700 1- Halim S. Department of Physics, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut NATIONALLICENCE 700 1- Chen S. Department of Physics, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/6(2011-08-01), 2025-2029 1557-1939 24:6<2025 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer