Where to find the surface free energy value?

[sunnyeg]

Hello,
I am working on some calculations and need to find the surface free energy value of amorphous SiO2 and MgO. will anyone please tell me where I can find those values?

Thanks a lot

 

[handsomecat]

In general, handbooks and reports of experimental work. Anything in the Landolt-Bornstein series?

Though, you could attempt DFT calculations of these, but anything like that will require work of a month or two.