Figure 2
From: Conventional empirical law reverses in the phase transitions of 122-type iron-based superconductors
The pressure dependence of the lattice parameters a (a), which is closely related to the shift of diffraction peak of (110) and c (b) for T and cT phase in EuFe2As2 at 12 K. (c) The pressure dependence of volume for EuFe2As2 at 12 K and the schematic crystal structures of T and cT phase for EuFe2As2.
