Fig. 2: Energy vs volume for bcc and fcc.
From: Non-collinear magnetic atomic cluster expansion for iron

Volume-energy curves for both magnetic and non-magnetic structures of bcc (left) and fcc (right) with corresponding DFT data (small circles).
From: Non-collinear magnetic atomic cluster expansion for iron
Volume-energy curves for both magnetic and non-magnetic structures of bcc (left) and fcc (right) with corresponding DFT data (small circles).