Broad-range multiphase EOS of a strong oxide to more than 1 TPa.*

We present ongoing work on the design of a broad-range multiphase equation of state (EOS) of gallium

oxide. Ga2O3 is an important functional material with rich physicochemical properties and emerging

candidate for applications in different fields like high power electronics, optoelectronics and more. Many

of the standard EOS models currently in use are geared to simple elemental metals. Ga2O3 pushes the

modeling beyond the basic physics assumptions. The complex nature of the crystalline structures lends to

a directional dependency. These dependencies make various quantities like thermal expansion and the

compression response change according to crystalline orientation. We are currently modelling the EOS

for four of the solid phases and the liquid.