DISLOCATION NETWORKS IN MELT-TEXTURED VANADIUM-DOPED BSCCO SUPERCONDUCTOR WITH STOICHIOMETRIC RATIO BI1.85V0.15SRICALCU3OY

Authors
FUNG PCW CHOW JCL DU ZL
Citation
Pcw. Fung et al., DISLOCATION NETWORKS IN MELT-TEXTURED VANADIUM-DOPED BSCCO SUPERCONDUCTOR WITH STOICHIOMETRIC RATIO BI1.85V0.15SRICALCU3OY, Superconductor science and technology, 7(6), 1994, pp. 397-401
Citations number
34
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter
Journal title
Superconductor science and technology → ACNP
ISSN journal
09532048
Volume
7
Issue
6
Year of publication
1994
Pages
397 - 401
Database
ISI
SICI code
0953-2048(1994)7:6<397:DNIMVB>2.0.ZU;2-K
Abstract
Regular and irregular dislocation networks have been observed under a transmission electron microscope (TEM) in melt-textured Bi1.85V0.15Sr2 Ca2Cu3Oy superconductors. From our previous experience in TEM observat ion, such dislocation networks cannot be found in polycrystalline and melt-textured Bi2Sr2Ca2Cu3Oy superconductors. We believe that these pl anar defects arise from the substitution of vanadium atoms, rendering a stronger bonding between the V and O atoms. The networks are conject ured to be possible planar pinning centres for magnetic flux in the su perconducting state.