Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 95: Issue 1
Development of superconducting phases in BSCCO and Ba-BSCCO by sol spray process
Authors:
S. Durrani Materials Division PINSTECH P. O. Nilore Islamabad Pakistan

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A. Qureshi Materials Division PINSTECH P. O. Nilore Islamabad Pakistan

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S. Qayyum University of Peshawar, NWFP Chemistry Department Peshawar Pakistan

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M. Arif Materials Division PINSTECH P. O. Nilore Islamabad Pakistan

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Pages:
87–91
Online Publication Date:
18 Mar 2009
Publication Date:
01 Jan 2009
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-7932-4
Keywords:
BSCCO system; d.c. four-probe; DTA; high Tc phase; SEM; sol-spray process; superconducting phases; TG; XRD study
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Abstract  

The effects of barium substitution for Bi or Sr sites on the growth of superconducting phases have been studied. The sol spray process has been used to synthesis the Bi-Sr-Ca-Cu-O (BSCCO) and Ba-BSCCO homogeneous ceramic powders. Thermogravimetric (TG), differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM) techniques were employed to characterize the synthesized materials. The electrical resistance was measured by classical d.c. fourprobe technique. It has been observed that sol spray process has affected the physico-chemical properties of the materials and also avoid the use of chelating agent as in the case of sol gel process. In addition to the Bi2Sr2CaCu2O8 (2212) phase Ba doped specimens also contained Bi2Sr2Ca2Cu3O10 (2223), BaBiO3, BaCuO2 and CuO phases. The results revealed that the specific effect of barium-doping on either sites (Bi or Sr) seems to avoid the formation of higher volume fraction of the low Tc phase and promoting the formation of BiBaO3, BaCuO2 and CuO along with formation of a high Tc 2223 phase. The substitution of Ba on either sites (Bi or Sr) lower the sintering temperature for the formation of high Tc (small volume fraction) however, the Ba doped specimens also contained non-superconducting phases.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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