Dear Tamara V Gavrilovic ,

for the thermal expansion of Y2Mo3O12*) you may have a look at:

Article Thermal Expansion Behavior in the A2M3O12 Family of Materials

(Table 1 at page 5)

Ref 68 therein may give further details.

Unfortunately Eu2Mo3O12, as you asked for in a similar question, is not mentioned there...

*) you may have a typing error in your chemical formula (Mo2 instead of Mo3)

Good luck and

best regards

G.M.