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conclude that our DIPPIM potential gives a good agree- ment with the experimental data as well. A direct com- parison with experimental data might be done by using the only published datum ( D$_{O}$ = 7 × 10 − 10 cm $^{2}$s − $^{1}$) on the oxygen diffusion constant $^{25}$, at T =1440 K. However, such a low diffusion coefficient would involve an impossi- bly long simulation run. 

It is also interesting to see that the rescaled OE poten- tial yields too fluid a melt if compared with the original OE and DIPPIM potentials and with experimental data. 

