Processing considerations for adding nanometer-scale oxides to enhance flux pinning in high-temperature superconductors
- Argonne National Lab., IL (United States)
- Univ. of Chicago, IL (United States)
Several nanometer-scale oxide inclusions were added to Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} high-temperature superconductors to determine their effectiveness in creating intragranular flux-pinning sites. Powder pellets were fabricated and heat treated by partial-melt processing. Effects of the additives on melting response, superconducting properties, and microstructural development were examined. Al{sub 2}O{sub 3} additions exhibited the most promise for forming stable pinning centers, ZrO{sub 2} and SnO{sub 2} additions were moderately promising, TiO{sub 2}, Fe{sub 2}O{sub 3}, and ZnO additions were less promising, and Y{sub 2}O{sub 3} additions destroyed superconductivity.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 554893
- Report Number(s):
- ANL/ET/CP-94202; CONF-970758-; ON: DE97054044; CNN: Contract DMR91-20000; TRN: 98:008664
- Resource Relation:
- Conference: Joint cryogenic engineering conference and international cryogenic materials conference, Portland, OR (United States), 27 Jul - 1 Aug 1997; Other Information: PBD: Jul 1997
- Country of Publication:
- United States
- Language:
- English
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