Phase development of Bi-2212 superconductor: A time-resolved neutron powder diffraction investigation

Journal Article · Thu Feb 01 00:00:00 EST 1996 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1996.0032· OSTI ID:278652

Argyriou, D N; Garcia, J A; Mitchell, J F; Jorgensen, J D; Hinks, D G ^[1]

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1. Science and Technology Center for Superconductivity and Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

Time-resolved {ital in} {ital situ} neutron powder diffraction and Rietveld refinement have been used to study the synthesis of Bi-2212 from hydroxide precursors in a 2{percent} O{sub 2} atmosphere. Bi-2212 was found to form within the temperature range 770{endash}800{degree}C. Studies at 800{degree}C show that Bi-2212 grows rapidly at the expense of Bi-2201. Upon lowering the temperature to 500{degree}C and changing the atmosphere to Ar, a rapid increase in the lattice parameters was observed. We attribute this change to the loss of oxygen from the Bi-2212 lattice. The final material exhibited a {ital T}{sub {ital c}} of 94 K. {copyright} {ital 1996 Materials Research Society.}

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 278652
• Journal Information: Journal of Materials Research, Vol. 11, Issue 2; Other Information: PBD: Feb 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
PHASE STUDIES
TEMPERATURE RANGE 1000-4000 K
ARGON
BISMUTH OXIDES
CALCIUM OXIDES
CHEMICAL PREPARATION
COPPER OXIDES
CRYSTAL STRUCTURE
LATTICE PARAMETERS
NEUTRON DIFFRACTION
OXYGEN
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0400-1000 K
TRANSITION TEMPERATURE