Effect of high-pressure on the electronic and magnetic properties in double perovskite oxide Sr₂FeMoO₆ Available to Purchase

The high-pressure effect on the physical properties in double perovskite Sr₂FeMoO₆ is explored theoretically. The structure of Sr₂FeMoO₆ exhibits I4/mmm symmetry in the whole external hydrostatic pressure applied. A spin crossover of Fe ion from high-spin to low-spin state is found at the pressure of about 33–36 GPa, accompanied by a transition from ferrimagnetic half-metallic to nonmagnetic semiconductor state. When the pressure is above 45 GPa, the nonmagnetic compound behaves as full metal. By the mean-field theory, the estimated Curie temperature of the ferrimagnetic Sr₂FeMoO₆ increases from 472 to 639 K when the pressure increases from 0 to 30 GPa.