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Effect of silver on the formation of Bi2Sr2Ca2Cu3O10 (Bi-2 2 2 3) superconductors by sol–gel process |
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| Authors: | G V Rama RAO K Swaminathan O M Sreedharan S Venkadesan S L Mannan U V Varadaraju |
| Affiliation: | (1) Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakam, 603 102, India;(2) Materials Science Research Centre, Indian Institute of Technology, Madras, 600 036, India |
| Abstract: | Bi-2 2 2 3 superconductors with silver additions are synthesized by sol–gel process. The effect of silver on the formation of Bi-2 2 2 3 phase is studied. The addition of silver brings down the reaction temperature as well as annealing time for the formation of Bi-2 2 2 3 phase. The presence of silver affects the Tc of the Bi-2 2 1 2 phase. The heat treatment of silver added Bi-2 2 2 3 samples above 1113 K show poor superconducting properties due to partial melting of Bi-2 2 2 3 phase. © 1998 Chapman & Hall |
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