Title :
Microstructure and levitation properties of floating zone melted YBCO samples
Author :
Bashkirov, Yu.A. ; Fleishman, L.S. ; Vdovin, A.B. ; Zubritsky, I.A. ; Smirnov, V.V. ; Vinogradov, A.V.
Author_Institution :
Krzhizhanovsky Power Eng. Inst., Moscow, Russia
fDate :
7/1/1994 12:00:00 AM
Abstract :
Radiation zone melting has been used to produce texture in sintered YBCO cylindrical samples. Microstructural analysis by electron microscopy and pole figure measurements reveals that the production process gives rise to a preferential orientation within large domains. DC transport measurements show that changes in alignment orientation can result in the inability to carry a transport current. Both AC magnetic field shielding and levitation properties are substantially improved by the floating zone melting, the levitation force being increased with the textured domain size growth
Keywords :
barium compounds; crystal microstructure; electron microscope examination of materials; electron microscopy; high-temperature superconductors; magnetic domains; magnetic levitation; magnetic shielding; radiation effects; texture; yttrium compounds; zone melting; AC magnetic field shielding; DC transport measurements; YBaCuO; alignment orientation; electron microscopy; floating zone melted YBCO; high temperature superconductor; levitation properties; microstructural analysis; pole figure measurements; radiation zone melting; texture; textured domain size growth; Current measurement; Electron microscopy; Levitation; Magnetic analysis; Magnetic field measurement; Magnetic properties; Magnetic shielding; Microstructure; Production; Yttrium barium copper oxide;
Journal_Title :
Magnetics, IEEE Transactions on
