Recoilless fraction of tin-doped hematite nanoparticles obtained by hydrothermal synthesis

Tin-doped hematite nanoparticles (1−x)α-Fe2O3-xSnO2 were synthesized using the hydrothermal method. The samples were characterized using Mössbauer spectroscopy as a function of the substitution level x. The recoilless fraction was determined using the dual absorber method introduced by us [M. Sorescu, Mater. Lett. 54 (2002) 256]. It has been observed that the recoilless fraction of the hematite samples first decreases with increasing the amount x of tin substitution, then increases as iron enters the SnO2 lattice and, finally, it slightly decreases again as the particle size of the nanoparticles decreases.