Subbarao, E. C. ; Srikanth, V. (1990) Acoustic emission and phase transitions in YBa2Cu3O7-x Physica C: Superconductivity, 171 (5-6). pp. 449-453. 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(90)90256-E
Abstract
Intense acoustic emission signals were detected at and below 450° C as a superconducting YBa2Cu3O7-x ceramic was cooled in air from 800° C. This is attributed to oxygen ion ordering at the orthorhombic I to II transition. This corroborates the reported abrupt changes in Tc from 60 to 90 K as YBa2Cu3O7-x is annealed at 400° C after quenching from 600° C. No acoustic emission signals were detected during heating from 25° C to 800° C and during cooling from 800° C down to 450° C.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 50470 |
| Deposited On: | 25 Jul 2011 10:36 |
| Last Modified: | 25 Jul 2011 10:36 |
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