Ym. Li et al., COMPARATIVE-STUDY ON THE DOPING EFFECT OF 3D ELEMENTS IN BI(1.5)PB(0.2)SR(2)CA(2)CU(2.8)M(0.2)O(Y) (M=SC,TI,V,CR,MN,FE,CO,NI, OR ZN), Journal of superconductivity, 9(2), 1996, pp. 201-203
With XRD, R-T, and ac chi measurements a comparative study on the dopi
ng effects of 3d elements in Bi(1.5)Pb(0.2)Sr(2)Ca(2)Cu(2.8)M(0.2)O(y)
(M = Sc, Ti, V, Cr, Mn, Fe, Co, Ni, or Zn) has been carried out. The
effects of the former five members are significantly different, both o
n phase formed and on T-c, from the latter four. It seems that the eff
ect on phase stabilization correlates with the valency of the doped ca
tion. In connection with the instability of the 2223 phase, the correl
ation has been discussed.