ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The microstructure of the high Tc phase (Tc∼111 K) in the Sb-Pb-Bi-Sr-Ca-Cu-O system has been determined using transmission electron microscopy. Its crystal structure belongs to the superspace group NBbmb11¯1, NBb2b111, PBbmb11¯1 or PBb2b111 with subcell lattice parameters a=5.411(1) A(ring), b=5.411(1) A(ring), and c=37.22(6) A(ring). The high Tc phase has a modulated structure with b-axis wavelengths 26.9 and 36.1 A(ring). Stacking faults along the c axis in the high Tc phase are much less numerous than in the Bi-Sr-Ca-Cu-O system, but comparable to the Pb-Bi-Sr-Ca-Cu-O system. Sb substitution for Ca may affect the internal strain of the crystal.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.104944
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