Singh, K. K. ; Kirtikar, V. ; Sinha, A. P. B. ; Morris, D. E. (1994) Studies on (Hg, Bi)-1212 A 92 K superconductor Physica C: Superconductivity, 220 (1-2). pp. 1-6. ISSN 0921-4534
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0921-4534(94)90877-X
Abstract
A series of (Hg, Bi)-1212 superconducting compounds has been synthesized. The highest Tc of the series (92 K) is found for the composition (Hg0.67Bi0.33)Sr2(Y0.5Ca0.5)Cu2O7-δ , with lattice constants: a=3.811 Å and c=12.002 Å . X-ray diffraction and SEM with EDX analysis confirm that Hg is indeed incorporated in the structure. High-pressure oxygenation at 250 bar and 400°C changes the demagnetization curve, adding a second transition at ~42 K; the 92 K transition remains unchanged. This behavior is explained in terms of phase segregation into oxygen "rich" and "poor" phases.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 48923 |
| Deposited On: | 19 Jul 2011 07:27 |
| Last Modified: | 19 Jul 2011 07:27 |
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