METASTABILITY OF YBA2CU3O7-X COMPOUND AT ROOM-TEMPERATURE

Authors
BRODIANSKY AP DMITRENKO IM ERENBURG AI FOMIN AV POPIVNENKO OL GARBUZ AS
Citation
Ap. Brodiansky et al., METASTABILITY OF YBA2CU3O7-X COMPOUND AT ROOM-TEMPERATURE, Fizika nizkih temperatur, 22(5), 1996, pp. 572-576
Citations number
17
Categorie Soggetti
Physics, Applied
Journal title
Fizika nizkih temperatur → ACNP
ISSN journal
01326414
Volume
22
Issue
5
Year of publication
1996
Pages
572 - 576
Database
ISI
SICI code
0132-6414(1996)22:5<572:MOYCAR>2.0.ZU;2-6
Abstract
We report the XRD observation of the YBa2Cu3O7/YBa2Cu3O8 structural is othermal transformation at room temperature and atmospheric oxygen pre ssure. It is shown that this structural transformation runs according to the scheme: YBa2Cu3O7-x --> --> Y2Ba4Cu7O14+y --> YBa2Cu4O8. These results are the first straightforward experimental evidence that the s uperconducting orthorhombic YBa2Cu3O7-x (x approximate to 0) is metast able under the ambient pressure at moderate temperature.