The [Bi2Sr2Cu1O6]1-z - [BiOF]z solid solutions were prepared by an ori
ginal many steps solid state reaction method. X-ray studies of samples
with different fluorine concentration were carried out. Concentration
dependencies of enthalpy, melting temperature and mass change during
melting process were studied by DTA method. The influence of starting
composition (namely fluorine concentration) on changes in microstructu
re, crystallographic parameters and melting character was investigated
.