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ChemInform Abstract: Phase Equilibria and Superconducting Properties of BiSr2YCu2O7 (1212 Phase).

✍ Scribed by Stefanie Kaesche; Peter Majewski; Fritz Aldinger

Publisher: John Wiley and Sons
Year: 2010
Weight: 35 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199917012

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✦ Synopsis

Phase Equilibria and Superconducting Properties of BiSr 2 YCu 2 O 7 (1212 Phase).

-The experiments performed give evidence that the 1212 phase is nonsuperconducting. Superconductivity at a critical temp. of ≈90 K is only observed in multiphase samples that contain the 2212 phase in addition to the 1212 phase. The 1212 phase is, additionally to the 2212 phase, in thermodynamic equilibrium with a liquid, (Sr,Y) 14 Cu 24 O 41-x , Sr 4 Y 3 Bi 3 Oy, and SrCuOy. Other phases in equilibrium are Sr 2 YOy and Y 2 O 3 . -(KAESCHE,

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