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Optimization of Experimental Parameters to the Formation of Bi2212 Phase via Sol-Gel Method

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Abstract:

Bi-2212 superconducting phase was synthesized via sol-gel method, and the experimental parameters such as the concentration of precursor solution and heat treatment temperature were adjusted to find the optimal conditions. Metal nitrates were adopted as the starting materials and ethylenediaminetetracetic acid (EDTA) as chelating agent. Precursor solutions and gel with different concentration were obtained through the addition of different content of distilled water as solvent followed by heating at certain temperature to form grey powders. Afterwards, the powders were sintered at different temperature for 10 hours, respectively. X-ray diffraction (XRD) was adopted to investigate the phase purity and crystallinity of the sample derived. Results reveal that the optimized precursor solution concentration is 27% and the optimized sintering temperature is 850°C.

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Info:

Periodical:

Advanced Materials Research (Volumes 328-330)

Pages:

1499-1502

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.328-330.1499

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Online since:

September 2011

Authors:

Hua Zhe Yang, Ye Song He, Yang Ji, Zi Mu Li, Hao Zhu

Keywords:

Bi-2212, Chelating Agent, Sol-Gel (SG), Superconductor

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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