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Mechanism of solid state reaction from 2212 to 2223 in BSCCO studied by HREM

Journal Article · · Modern Physics Letters B; (United States)
OSTI ID:5931134
 [1]
  1. Shanghai Inst. of Ceramics, Chinese Academy of Science, Shanghai 20005 (CN)
Two mechanisms of solid state reaction from 2212 to 2223 in Bi-Sr-Ca-Cu-O have been investigated and are elucidated in this paper. The first mechanism is related to nucleation of 2223 phase in a liquid matrix with the composition of Bi{sub 2}SrCaCu{sub 2}O + Ca{sub 2}CuO{sub 3} + CuO and subsequent growth. The second mechanism is related to intragrain reaction in which only two layers of atoms (a Ca layer and a CuO layer) are required to move into the 2212 structure forming the 2223 structure. To study the mechanisms of such a solid state reaction may be very important for the preparation of pure 2223 phase in Bi-Sr-Ca-Cu-O.
OSTI ID:
5931134
Journal Information:
Modern Physics Letters B; (United States), Journal Name: Modern Physics Letters B; (United States) Vol. 5:8; ISSN 0217-9849; ISSN MPLBE
Country of Publication:
United States
Language:
English