In this study, polycrystalline of FeSe0.98 and FeSe1.2 samples were synthesized by a solid-state reaction method to investigate the microstructural and magnetic properties in these systems. Different heating cycles were applied and the best synthesis cycle has been established by optimization. Samples were characterized regarding structure, composition and superconducting properties. The microstructural investigations showed that structural formation of the samples was not strictly depending on the heating cycles. Transition temperature is obtained as 10 K from Zero Field Cooled magnetization measurement.