type: thermalexpansion

references:
  - R.H. Bogaard et al.,
    Thermochimica Acta 218:373-393, 1993,
    https://doi.org/10.1016/0040-6031(93)80437-F,
    fit to Fig. 6 (T_min=100K, T_max=1200K)

Alpha_11: 14.9e-6
Alpha_11,T: 1.838e-08
Alpha_11,T^2: -2.028e-11
Alpha_11,T^3: 9.173e-15

T_ref: 293.15