Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
69 (1991), S. 2414-2417
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We have carried out in situ heat treatments of YBa2Cu3O7−δ at temperatures between 25 and 500 °C and oxygen pressure of 10 Torr. It was found that the original orthorhombic (OI phase) YBa2Cu3O7−δ transforms into the OII phase (still orthorhombic, but with a doubling of the a-axis, and with a δ=0.5) at about 250 °C. As the temperature is increased further, the tetragonal phase of YBa2Cu3O7−δ forms. As the tetragonal phase is slowly cooled to room temperature, the orthorhombic phase OI reappears. Cycling the temperature repeatedly has indicated the regenerability of the OI phase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.348674
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