Introduction of artificial pinning centre in {open_quotes}Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8}{close_quotes} ceramics

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:121654

Majewski, P; Aldinger, F ^[1]; Elschner, S ^[2]

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1. Max-Planck-Institut fuer Metallforschung, Stuttgart (Germany)
2. Hoechst AG, Frankfurt am Main (Germany); and others

Considering the phase equilibrium diagram of the system Bi{sub 2}O{sub 3}-SrO-CaO-CuO, single phase {open_quotes}Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8}{close_quotes} ceramics have been transformed by a simple annealing procedure into multi phase samples. The transformation results in the formation of second phases and in an increase of the intra grain critical current density at 1 T of five times. This increase is believed to express improved pinning properties of the superconducting crystals. The prepared pinning centres are believed to be e.g. coherent precipitates (Guinier-Preston-zones) within the superconducting crystals.

• Research Organization: National Aeronautics and Space Administration (NASA), Washington, DC (United States); National Aeronautics and Space Administration, Houston, TX (United States). Lyndon B. Johnson Space Center
• OSTI ID: 121654
• Report Number(s): CONF-940627-Vol.2; ON: TI95017155; TRN: 99:003593
• Resource Relation: Conference: 4. international conference and exhibition of the World Congress on Superconductivity, Orlando, FL (United States), 27 Jun - 1 Jul 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the fourth international conference and exhibition: World Congress on superconductivity. Volume 2; Krishen, K.; Burnham, C. [eds.] [National Aeronautics and Space Administration, Houston, TX (United States). Lyndon B. Johnson Space Center]; PB: 400 p.
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
DISLOCATION PINNING
COPPER OXIDES
CALCIUM COMPOUNDS
STRONTIUM COMPOUNDS
BISMUTH COMPOUNDS
CRITICAL CURRENT
CURRENT DENSITY
MAGNETIC SUSCEPTIBILITY
MAGNETIC FIELDS