caa a22 4500 44538137X CHVBK 20180317143018.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-1013-4 doi (NATIONALLICENCE)springer-10.1007/s10948-010-1013-4 Influence of Boron Doping on Transport Properties ofYBa2Cu3O7− y HTS [Elektronische Daten] [N. Margiani, I. Metskhvarishvili, I. Mzhavanadze, N. Papunashvili, V. Zhghamadze] The nominally pure and boron-doped YBa2Cu3BxO7−y samples with B-doping level x varying between 0 and 0.15 were prepared by the solid state reaction. X-ray diffraction analysis shows that all the obtained compounds are single YBa2Cu3O7−y phase. The small additives of boron in YBa2Cu3BxO7−y (x=0.025 and 0.05) do not essentially affect the critical temperature T c and it remains near 90K. The higher-level boron doping causes degradation of T c and tail remains on the ρ(T) curve for x=0.15 at 65K. Lowest-level boron doping applied leads to a significant improvement in J c compared to the undoped sample (from 100A cm−2 for a control sample to 147A cm−2 for a B-doped sample with x=0.025). Grain boundary critical current density and superconducting volume fraction decrease with increasing amount of added B2O3. The obtained results indicate possibility of boron dopant being entered into the lattice-sites. Springer Science+Business Media, LLC, 2010 Y-123 phase nationallicence B2O3 addition nationallicence Critical temperature nationallicence Critical current density nationallicence Margiani N. Department of Coherent and Quantum Optics, Institute of Cybernetics, S. Euli str. 5, 0186, Tbilisi, Georgia aut Metskhvarishvili I. Department of Physics, Faculty of Exact and Natural Sciences, Iv. Javakhishvili Tbilisi State University, Chavchavadze Ave. 3, 0128, Tbilisi, Georgia aut Mzhavanadze I. Department of Coherent and Quantum Optics, Institute of Cybernetics, S. Euli str. 5, 0186, Tbilisi, Georgia aut Papunashvili N. Department of Coherent and Quantum Optics, Institute of Cybernetics, S. Euli str. 5, 0186, Tbilisi, Georgia aut Zhghamadze V. Department of Coherent and Quantum Optics, Institute of Cybernetics, S. Euli str. 5, 0186, Tbilisi, Georgia aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 279-281 1557-1939 24:1-2<279 2011 24 10948 https://doi.org/10.1007/s10948-010-1013-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1013-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Margiani N. Department of Coherent and Quantum Optics, Institute of Cybernetics, S. Euli str. 5, 0186, Tbilisi, Georgia aut NATIONALLICENCE 700 1- Metskhvarishvili I. Department of Physics, Faculty of Exact and Natural Sciences, Iv. Javakhishvili Tbilisi State University, Chavchavadze Ave. 3, 0128, Tbilisi, Georgia aut NATIONALLICENCE 700 1- Mzhavanadze I. Department of Coherent and Quantum Optics, Institute of Cybernetics, S. Euli str. 5, 0186, Tbilisi, Georgia aut NATIONALLICENCE 700 1- Papunashvili N. Department of Coherent and Quantum Optics, Institute of Cybernetics, S. Euli str. 5, 0186, Tbilisi, Georgia aut NATIONALLICENCE 700 1- Zhghamadze V. Department of Coherent and Quantum Optics, Institute of Cybernetics, S. Euli str. 5, 0186, Tbilisi, Georgia aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 279-281 1557-1939 24:1-2<279 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer