| Autor: |
Singh, B. P., Agarwal, S. K., Moorthy, V. N., Kumaraswamy, B. V., Nayar, R. K., Narlikar, A. V. |
| Zdroj: |
Journal of Materials Science; November 1990, Vol. 25 Issue: 11 p4630-4633, 4p |
| Abstrakt: |
Results on the pressure dependence of the transition temperatureTc and the resistancetemperature behaviour of Bi2Ca1 Sr2Cu2Ox compound are presented. Both the onsetTc and theTc (R = O) are found to decrease with increasing pressure in the 0 to 50 kbar (1 bar = 105Pa) range. Up to 20 k bar, the normal state resistivity is seen to be metallic beyond which it becomes semiconducting. The pressure is found to reduce theTc at a rate of 0.2 K kbar-1. The scanning electron micrographs of the starting bismuth cuprates showed characteristic needle-like structure, whereas the pressurized samples were found to be particularly different, consisting of small grains. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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