A convenient, one-step synthesis of YBa{sub 2}Cu{sub 3}O{sub 7-x} superconductors: An undergraduate in organic/materials laboratory experiment
- Texas Tech Univ., Lubbock, TX (United States)
The preparation of YBa{sub 2}Cu{sub 3}O{sub 7-x} (Y-123) high-temperature superconductor material generally requires repeated grinding and heating of binary oxide or carbonate reactants to inhibit the formation of the low-melting insulating phases BaCuO{sub 2} and Y{sub 2}BaCuO{sub 5} (Y-211). This multiple processing renders the synthesis tedious and somewhat impractical for use in an undergraduate laboratory setting. We describe here a convenient, single-step synthesis of Y-123 from the ternary oxide precursors Y{sub 2}Cu{sub 2}O{sub 5} and BaCuO{sub 2}. This reaction can be accomplished in a single 24 hour period and does not suffer from the formation of eutectic phases. The precursor materials can be prepared and stored in advance of the experiment. Students are also exposed to the concepts of ternary phase equilibria and other concepts of modern matter processing.
- OSTI ID:
- 126179
- Report Number(s):
- CONF-950402-; TRN: 95:006086-0153
- Resource Relation:
- Conference: 209. American Chemical Society (ACS) national meeting, Anaheim, CA (United States), 2-6 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of 209th ACS national meeting; PB: 2088 p.
- Country of Publication:
- United States
- Language:
- English
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