Abstract
Growth of α-PbF 2 crystals in 0.28M perchloric acid is described. The choice was based on an analysis of equilibria with the participation of fluoride ions and investigations of the solubility of lead fluoride in aqueous solutions. The enthalpy of dissolution of α-PbF 2 in 0.28M perchloric acid is 1.6 kJ/mol, which is close to the value for pure water (2.4 kJ/mol). Orthorhombic lead fluoride single crystals were grown at spontaneous crystallization by a slow cooling method in the shape of plates (3 × 3 × 0.1 mm 3) or prisms (4 × 1.5 × 0.2 mm 3), depending on the cooling rate, α-PbF 2 was grown on a seed crystal. The grown layer of about 1 mm in thickness has no visual inclusions and cracks.
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