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Phase transformation resulting from nitrogen annealing of bismuth-deficient-2212 compound

Journal Article · · Materials Research Bulletin; (United States)
; ;  [1]
  1. National Physical Lab., New Delhi (India)
Phase transformation of nominal Bi deficient 2212 has been studied through X-ray diffraction, resistivity and susceptibility. The reversibility of converting the lower [Tc] phases of Bi system along with Ca[sub 2]CuO[sub 3] and CuO, into high [Tc] Bi-phase has been observed. The N[sub 2] annealing of this distorted Bi-2223 phase leads to the formation of lower [Tc] phases in the system. Further higher temperature nitrogen annealing of the Bi-2223 phase has been seen to generate the amorphicity in the material. Results are also discussed in the light of recent band structure calculations.
OSTI ID:
6097056
Journal Information:
Materials Research Bulletin; (United States), Journal Name: Materials Research Bulletin; (United States) Vol. 28:1; ISSN MRBUAC; ISSN 0025-5408
Country of Publication:
United States
Language:
English