  Lithium niobate, LiNbO3, is an important technological material with good
electro-optic, acousto-optic, elasto-optic, piezoelectric and nonlinear
properties. Doping LiNbO3 with hafnium, Hf has been shown to improve the
resistance of the material to optical damage. Computer modelling provides a
useful means of determining the properties of doped and undoped LiNbO3,
including its defect chemistry, and the effect of doping on the structure. In
this paper, Hf doped LiNbO3 has been modelled, and the final defect
configurations are found to be consistent with experimental results.
