SOME ASPECTS OF THERMAL-CONVERSION OF GELS TO YBCO AND BSCCO SUPERCONDUCTORS - REMOVAL OF CARBONATES FROM INTERMEDIATE PHASES

Authors
DEPTULA A OLCZAK T LADA W DIBARTOLOMEO A BRIGNOCCHI A
Citation
A. Deptula et al., SOME ASPECTS OF THERMAL-CONVERSION OF GELS TO YBCO AND BSCCO SUPERCONDUCTORS - REMOVAL OF CARBONATES FROM INTERMEDIATE PHASES, Applied superconductivity, 2(9), 1994, pp. 613-619
Citations number
15
Categorie Soggetti
Material Science","Physics, Applied","Physics, Condensed Matter
Journal title
Applied superconductivity → ACNP
ISSN journal
09641807
Volume
2
Issue
9
Year of publication
1994
Pages
613 - 619
Database
ISI
SICI code
0964-1807(1994)2:9<613:SAOTOG>2.0.ZU;2-G
Abstract
The thermal transformation of acetate derived gels: YBCO and BSCCO to respective superconductors has been studied using thermogravimetry, XR D and i.r. techniques. Formation of carbonates was observed during the thermal treatment of all the materials examined. Thermal decompositio n of the carbonates turned out to be more difficult in the YBCO than i n BSCCO compounds. Nevertheless the negative effect of carbonates on t he formation of BSCCO phases has been observed. Removal of carbonates from intermediate phases by low-temperature treatment with nitric acid strongly accelerates formation of the 2223 BSCCO superconducting phas e.