About stannous fluoride SnF2. III. Thermal expansion

The unit-cell parameters of SnF₂ were measured from ?200 to 190°C. The tensor of thermal expansion of the three phases (α, β, and γ) was computed from the expansion in each (hkl) direction by a least-squares method. The thermal expansion of each phase is related to its crystal structure and physical properties (molecular structure of α-SnF₂, ferroelastic properties of the β-phase).