Synthesis of Bi1.5Pb0.5Sr2Ca2Cu3Oy via sol-gel method using different acetate-derived precursors
Sol-gel method have been used to convert metal carbonates, oxides and nitrates into corresponding acetate precursors for gel formation. About 90% volume of high Tc superconducting phase (2223) has been obtained for oxide-carbonate system. This value is comparable to that obtained from pure acetates...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | en |
| Published: |
Kluwer Academic Publishers
2000
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/116772/1/116772.pdf http://psasir.upm.edu.my/id/eprint/116772/ https://link.springer.com/article/10.1023/A:1004811731478?error=cookies_not_supported&code=c3833ef9-099c-40b9-ba9f-5951ae3fa087 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Sol-gel method have been used to convert metal carbonates, oxides and nitrates into corresponding acetate precursors for gel formation. About 90% volume of high Tc superconducting phase (2223) has been obtained for oxide-carbonate system. This value is comparable to that obtained from pure acetates (91% volume). However, the nitrates-'derived sample has a high-Tc phase of 88% due to poor conversion of nitrates to acetates as observed by the infrared spectra. The dominance of high-Tc phase was observed in all systems as evidenced in the single step transition of R-T curves. Hence the percentage of the high-Tc phase dictates the value of Tc(R=0) as 104 K, 103 K and 99 K, for oxide-carbonate, pure metal acetates and nitrates system respectively. |
|---|