The elastic constants for single-crystal bismuth and tin from room temperature to the melting point

The six adiabatic elastic stiffness constants of bismuth and tin have been determined over a range of temperatures extending from room temperature to the melting point. These constants were computed from measurements of the ultrasonic wave velocity in high-purity, single crystal specimens. The constants for bismuth at the melting point are C₁₁ = 56·l C₁₃ = 24·2 C₁₄ = 60 C₃₃ = 34·9 C₄₄ = 90 C₆₆= 16·1 in units of 10¹⁰ dynes/cm². The constants for tin at the melting point (in the same units) are C₁₁ = 61·3 C₁₂ = 38·5 C₁₃ = 38·0 C₃₃ = 75·6 C₄₄ = 16·9 C₆₆ = 19·0.