Abstract
Magnetization and Mossbauer spectroscopy results on aerosol processed YBa 2 (Cu 1-x Fe x ) 3 0 7–δ samples are presented. Systematics of T c (x), x (x) and Fe dopant site occupancies I n /I(x) as a function of dopant concentration ‘x’ are deduced and compared to those established on analogous solid-state- reacted samples. The absence of twinning in the aerosol processed grains leads to a random replacement of Cu for Fe in chains and planes of the host structure.