MAGNETIC INVESTIGATIONS ON HGXBA2CA2CU3OY CERAMICS

Authors
REISSNER M SARGANKOVA I KONIG W MAIR M GRITZNER G DIKO P STEINER W
Citation
M. Reissner et al., MAGNETIC INVESTIGATIONS ON HGXBA2CA2CU3OY CERAMICS, Superlattices and microstructures, 21, 1997, pp. 191-195
Citations number
6
Categorie Soggetti
Physics, Condensed Matter
Journal title
Superlattices and microstructures → ACNP
ISSN journal
07496036
Volume
21
Year of publication
1997
Supplement
A
Pages
191 - 195
Database
ISI
SICI code
0749-6036(1997)21:<191:MIOHC>2.0.ZU;2-K
Abstract
The influences of the nominal concentration of Hg, and the ratio of sa mple size to quartz tube volume during sintering, upon the phase purit y, microstructure, and superconducting properties of ceramic HgxBa2Ca2 Cu3Oy were investigated. Samples could be prepared consisting of only the Hg1223-phase, and very few nonsuper- conducting secondary phases, and with critical current densities in the grains up to 5.17 . 10(6)A/ cm(2) (0 T, 4.2 K). Ageing for 5 months in dry air leads to a strong d egradation of the grain boundaries. The flux creep behaviour is mainly determined by bulk pinning effects. (C) 1997 Academic Press Limited.