caa a22 4500 445381736 CHVBK 20180317143019.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-0912-8 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0912-8 The Effect of the Pinning Center Size on the Vortex Pinning byEmbedded ZrO2 Nano-particles [Elektronische Daten] [Nahed Moutalbi, Asma Ouerghi, Ali M'chirgui] The influence of pinning centers size on the superconducting properties was investigated. Through the addition of three batches of ZrO2 nano-particles with mean size of D 1=13nm, D 2=21nm, and D 3=85nm, we have succeeded in incorporating effective artificial pinning centers within the YBCO matrix of the bulk superconductor. An enhancement in the flux pinning and an improvement in the critical current densities (transport critical current density J ct and magnetic critical current density J cm) were achieved. The results indicate that slight inclusions of ZrO2 can greatly enhance the flux pinning capability of samples. Comparative analyses of the critical current densities and the resulting pinning force F p for the three diameters have shown that pinning centers with finer size are much more efficient than those with a size larger than the coherence lengthξ. Springer Science+Business Media, LLC, 2010 Y-based cuprates nationallicence ZrO2 nationallicence Pinning nationallicence Size effect and superconducting properties nationallicence Moutalbi Nahed Department of Physics, Faculty of Sciences, 7021, Zarzouna Bizerte, Tunisia aut Ouerghi Asma Department of Physics, Faculty of Sciences, 7021, Zarzouna Bizerte, Tunisia aut M'chirgui Ali Department of Physics, Faculty of Sciences, 7021, Zarzouna Bizerte, Tunisia aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 165-168 1557-1939 24:1-2<165 2011 24 10948 https://doi.org/10.1007/s10948-010-0912-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0912-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moutalbi Nahed Department of Physics, Faculty of Sciences, 7021, Zarzouna Bizerte, Tunisia aut NATIONALLICENCE 700 1- Ouerghi Asma Department of Physics, Faculty of Sciences, 7021, Zarzouna Bizerte, Tunisia aut NATIONALLICENCE 700 1- M'chirgui Ali Department of Physics, Faculty of Sciences, 7021, Zarzouna Bizerte, Tunisia aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 165-168 1557-1939 24:1-2<165 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer