Physics – Condensed Matter – Superconductivity
Scientific paper
2010-01-12
Physics
Condensed Matter
Superconductivity
4 pages, 1 figues, presented at VORTEX VI-2009, accepted for PhysicaC
Scientific paper
The study of high pressure (2 GPa) synthesized MgB2-based materials allows us to conclude that higher borides (with near MgB12 stoichiometry) and oxygen-enriched Mg-B-O inclusions can be pinning centers in nanostructural magnesium diboride matrix (with average grain sizes of 15-37 nm). It has been established that additions of Ti or SiC as well as manufacturing temperature can affect the size, amount and distribution of these inclusions in the material structure and thus, influence critical current density. The superconducting behavior of materials with near MgB12 stoichiometry of matrix is discussed.
Danilenko Nikolay
Dellith Jan
Dub Sergey
Eisterer Michael
Gawalek Wolfgang
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