Synthesis of (BiPb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} superconductors by the sol-gel process
Journal Article
·
· Journal of Solid State Chemistry
- Indira Gandhi Centre for Atomic Research, Kalpakkam (India); and others
The sol-gel process is employed to synthesize single-phase lead-doped Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} ((Bi,Pb)-2223) superconductors. The composition which can yield single-phase (Bi,Pb)-2223 compound is arrived at by varying the calcium and copper concentrations. Samples prepared with the composition Bi{sub 1.68} Pb{sub 0.32}Sr{sub 1.75}Ca{sub 1.8}Cu{sub 2.8}O{sub y} result in the formation of phase pure compound. The mechanism of formation of this compound and the intermediate steps involved during the phase formation are established by X-ray diffraction (XRD) and differential thermal analytical (DTA) studies. It is found that (Bi,Pb)-2223 phase formation occurs through the reaction of (Bi,Pb)-2212 phase with Ca{sub 2}CuO{sub 3} and CuO in the liquid phase obtained from the partial melting calcium rich Bi-2223 phase. Several incongruent melting reactions are identified from XRD and DTA studies during the decomposition of Bi-2223 compound.
- OSTI ID:
- 478919
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 126; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
Similar Records
An investigation of the invariant reactions in BiPbSrCaCuO system
Effects of silver and lead on the phase stability of Bi[sub 2]Sr[sub 2]Ca[sub 1]Cu[sub 2]O[sub 8+x] and Bi[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10+x] above and below the solidus temperature
Formation of (Bi,Pb)-2223 phase during solidifying and sintering
Journal Article
·
Sun Sep 01 00:00:00 EDT 1996
· Journal of Materials Research
·
OSTI ID:383755
Effects of silver and lead on the phase stability of Bi[sub 2]Sr[sub 2]Ca[sub 1]Cu[sub 2]O[sub 8+x] and Bi[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10+x] above and below the solidus temperature
Journal Article
·
Thu Sep 01 00:00:00 EDT 1994
· Journal of the American Ceramic Society; (United States)
·
OSTI ID:6933632
Formation of (Bi,Pb)-2223 phase during solidifying and sintering
Journal Article
·
Sun Jun 01 00:00:00 EDT 1997
· Advances in Cryogenic Engineering
·
OSTI ID:482079