Magnetism and microstructure of YBa2Cu3O7−x superconductors produced by rapid solidification
M. E. McHenry, J. McKittrick, S. Sasayama, V. Kwapong, R. C. O'Handley, G. Kalonji
DOI 10.1103/PhysRevB.37.623 · Physical Review B
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Abstract
The superconducting YBa2Cu3O7−x phase has been produced through a novel rapid solidification processing route yielding a high-quality granular superconducting phase. A detailed study of the magnetic properties indicates important features relevant to current carrying capacity. Low-field magnetization data reveal that weakly coupled superconducting grains decouple at fields of approximately 20 Oe so that the magnetization measurements at higher fields are reflective of intragranular processes exclusively. The high-field data reveal significant irreversibility as well as nonergodic susceptibility behavior consistent with the recently proposed superconducting glass state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | onset |
| La2CuO4-y:Ba Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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