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LFZ growth of (Bi,Pb)--Sr--Ca--Cu--O superconducting fibers

Journal Article · · Journal of Materials Research; (USA)
; ; ; ; ;  [1]; ; ;  [2];  [3]
  1. Instituto de Ciencia de Materiales de Aragon, CSIC-Universidad de Zaragoza, 50009-Zaragoza, Spain (ES)
  2. UIBCM, Departament de Quimica Inorganica, Universitat de Valencia, Dr. Moliner 50, Burjassot, 46100-Valencia, (Spain)
  3. University of Hull, School of Chemistry, Cottingham Road, Kingston upon Hull, HU6 7RX, (England)
Powder x-ray diffraction, d.c. and a.c. susceptibilities, and SEM have been used to study (Bi{sub 1{minus}{ital x}}Pb{sub {ital x}}){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta}} fibers grown by the Laser Floating Zone method. The well-oriented, long-grained superconductor fiber properties are shown to be highly dependent on the partial pressure of oxygen in the growth atmosphere, as well as on fiber pulling rate. Slowly grown fibers contain initially the 2212 (80 K) phase; the 2223 (110 K) phase also appears upon annealing in air. Faster growth rates result in fibers that contain a mixture of the 2212 and 2201 phases and, in this case, long annealing procedures are necessary to observe the 2223 phase.
OSTI ID:
5624497
Journal Information:
Journal of Materials Research; (USA), Journal Name: Journal of Materials Research; (USA) Vol. 6:4; ISSN JMREE; ISSN 0884-2914
Country of Publication:
United States
Language:
English