Single-phase perovskite compouds Ca_0.6Pr_0.4Mn_1-yRu_y­O₃ (y = 0, 0.03, 0.05, 0.07) we prepared by ceramic-technology method. Thermalmagnetic plots, temperature dependence of resistivities, ac-susceptibilities of the produced sample were determined. The non-Ruthenium doping (y = 0) sample presents charge ordering phenomenon at T_CO = 291K. The experiment results show that the ruthenium doping destroys the charge ordering state, enhances ferromagnetism tendency and conductivity.

Tải file Melting of the charge ordering state by Ruthenium doping in Ca0.6Pr0.4Mn1-yRuy¬O3 (y = 0, 0.03, 0.05, 0.07) perovskites tại đây