Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8165599 | Physica C: Superconductivity and its Applications | 2012 | 4 Pages |
Abstract
Increasing the pressure during manufacturing MgB2 enhances the volume pinning force and moves the position of the maximum to higher magnetic fields. A similar shift was observed when Ti or SiC was added and the maximum of the volume pinning force was found at higher fields in in situ synthesized materials than in ex situ sintered samples. We attribute the observed changes to Mg-B-O oxygen-enriched regions and grains of higher magnesium borides in the MgB2 matrix. High-temperature processed materials demonstrated mainly point or mixed pinning while grain boundary pinning dominated after low-temperature synthesis.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Tatiana Prikhna, Wolfgang Gawalek, Michael Eisterer, Harald W. Weber, Mykola Monastyrov, Vladimir Sokolovsky, Jacques Noudem, Viktor Moshchil, Myroslav Karpets, Valeriy Kovylaev, Alexandr Borimskiy, Vasiliy Tkach, Artem Kozyrev, Roman Kuznietsov,