Abstract
Effects of the Li-addition to the Bi-2212 phase on the formation process and the superconductive properties were studied for the samples with the nominal compositions of Bi : Sr : Ca : Cu : Li = 2 : 1.5 : 1.5 : 2 : x(x=0 to 0.6). The samples were heated at 560-860°C for 1 to 48h in air. Monophasic Bi-2212 samples was obtained for x=0.2 to 0.6 by heating above 730°C, which was approximately 100°C lower than that of the sample with x=0. A new compound containing Li element was formed in the temperature range between 700 and 720°C, which remarkably promoted the formation of the Bi-2212 phase. The lattice parameter c of the Bi-2212 phase increase with increasing Li content. The temperature dependence of magnetic susceptibility showed that Tc rose up to 90K for the sample with x=0.4 heated at 750°C for 12h.
Original language | English |
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Pages (from-to) | 178-182 |
Number of pages | 5 |
Journal | Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy |
Volume | 43 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 1996 |
Keywords
- 2212 phase
- Formation process
- Lattice parameter
- Li-addittion
- Oxygen content
- Tc
ASJC Scopus subject areas
- Mechanical Engineering
- Industrial and Manufacturing Engineering
- Metals and Alloys
- Materials Chemistry