Xh. Chen et al., THE SYNTHESIS AND STRUCTURE OF A NEW BI-BASED COPPER-OXIDE WITH (BI, M)-O MONOLAYERS - (BI,M)SR2(R,CE)3CU2O11-DELTA, Physica. C, Superconductivity, 216(3-4), 1993, pp. 458-462
A new layered cuprate, (Bi,M)Sr2(R,Ce)3Cu2011-delta (M = Cd, Cu; R: ra
re earth elements) (Bi-based ''1232''), has been synthesized. The stru
cture of the compounds has been determined by the powder X-my diffract
ion method. It is found that the cell parameters are approximately equ
al to a = 3.8 5 angstrom and c = 17 angstrom. Comparison of the calcul
ated and observed diffraction intensities shows that the structures ar
e similar to that of (Tl, Cu) Sr2 (R, Ce)3CU2011. The behavior of the
resistivity dependence on temperature is directly related to the heat
treatment.