A comparative study of edta-gel derived BSCCO and Pb-BSCCO systems by thermoanalytical (TG/DTA) and x-ray diffraction (XRD) techniques
- 1. Pakistan Inst. of Nuclear Science and Technology, Islamabad (Pakistan). Applied Physics Div.
- 2. Pakistan Inst. of Nuclear Science and Technology, Islamabad (Pakistan)
- 3. University of Manchester (United Kingdom). Manchester Materials Science Center
- 4. Quaid-e-Azam Univ., Islamabad (Pakistan). Dept. of Chemistry
- 5. University of Peshawar (Pakistan). Chemistry Dept.
- 6. Allama Iqbal Open Univ., Islamabad (Pakistan). Dept. of Chemistry
Description
Superconducting phases in the BSCCO and Pb-BSCCO systems have been produced by ethylenediaminetetraacetic acid (EDTA) gel-derived route using nitrates of metal salts. Thermal decomposition and formation of various phases of gel and calcined powder of both BSCCO and Pb-BSCCO have been investigated by thermoanalytical and XRD techniques. It has been observed that Pb-containing system shows large volume of high T/sub c/ phase as compared to Pb-free system at the same sintering temperature. Thermal behavior (TG) indicates that sample doped with Pb decomposed in a series of steps while Pb-free sample, in a single step. The effect of Pb is shown to lower the sintering temperature (845 degree C) of formation of high T/sub c/ phase (2223). However, in the Pb-free sample the high T/sub c/ phase produced at higher temperature (860 degree C). (author)
Additional details
Publishing Information
- Publisher
- Doctor A.Q. Khan Research Labs., Islamabad Pakistan
- Imprint Place
- Islamabad (Pakistan)
- Imprint Title
- Advanced materials 2001
- Imprint Pagination
- 520 p.
- Journal Page Range
- p. 255-260
Conference
- Title
- 7. International Symposium on Advanced Materials
- Dates
- 17-21 Sep 2001
- Place
- Islamabad (Pakistan)
INIS
- Country of Publication
- Pakistan
- Country of Input or Organization
- Pakistan
- INIS RN
- 34064965
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; CRITICAL TEMPERATURE; DIFFERENTIAL THERMAL ANALYSIS; DOPED MATERIALS; EDTA; HIGH-TC SUPERCONDUCTORS; LEAD OXIDES; SINTERING; SOL-GEL PROCESS; SUPERCONDUCTIVITY; THERMAL GRAVIMETRIC ANALYSIS; THERMOCHEMICAL DIAGRAMS; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; AMINO ACIDS; BARIUM COMPOUNDS; CARBOXYLIC ACIDS; CHALCOGENIDES; CHELATING AGENTS; CHEMICAL ANALYSIS; COHERENT SCATTERING; COPPER COMPOUNDS; DIAGRAMS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; FABRICATION; GRAVIMETRIC ANALYSIS; INFORMATION; LEAD COMPOUNDS; MATERIALS; ORGANIC ACIDS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; QUANTITATIVE CHEMICAL ANALYSIS; SCATTERING; SUPERCONDUCTORS; THERMAL ANALYSIS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE; TYPE-II SUPERCONDUCTORS