Pressure Induced AF - F - AF Magnetic Phase Transformations in Pd substituted FeRh compound

摘要

At ambient pressure, the Fe_(0.49)(Rh_(1-x)Pd_x)_(0.51) alloys with the Pd concentration within 0＜x＜0.12 exhibit an antiferromagnetic (AF) state below the critical temperature T_t, while above x = 0.12 the alloys have a ferromagnetic (F) order up to the Curie temperature T_C ≈ 650 K. The temperature and field dependences of the magnetization in the alloys with x = 0.08; 0.13 were investigated under hydrostatic pressure up to 10 kbar. The application of pressure of about 8.5 kbar is observed to induce the F-AF phase transition in the ferromagnetically ordered compound with x = 0.13. The AF-F-AF phase evolution was revealed with increasing pressure in the AF-ordered alloy with x = 0.08.