Effect of the Interatomic Exchange Interaction on the Magnetic Phase Transitions in Spin Crossover Systems under High-Pressure

Ovchinnikov, SG; Orlov, YS; Nikolaev, SV; Nesterov, AI; Ovchinnikova, TM PHYSICS OF THE SOLID STATE, 60 (6):1177-1179; 10.1134/S1063783418060276 JUN 2018

The phase diagram of an antiferromagnet with the spin crossover from the high-spin to low-spin state with S = 0 with increasing external pressure has been calculated with regard to the pressure dependence of the exchange integral. The calculated results are compared with the experimental data on ferropericlase Fe x Mg1 – xO.