The magnetic ordering temperature of Cu, Mn, and Fe elements in

In the literature [A. Kumar, S.M. Yusuf, L. Keller, J.V. Yakhmi, Phys. Rev. Lett. 101 (2008) 207206], the ferromagnetic ordering temperature between the Cu and Fe moments in Cu0.73Mn0.77[Fe(CN)6]⋅zH2O was assumed to be 17.9 K, and the antiferromagnetic ordering temperature of the Mn moments with respect to the Cu and Fe moments in Cu0.73Mn0.77[Fe(CN)6]⋅zH2O was assumed to be 13.5 K. In this paper, I give a distinct explanation about the experimental results of Cu0.73Mn0.77[Fe(CN)6]⋅zH2O based on the mean field theory and propose a reasonable microscopic magnetic structure in CMF near the Curie temperature. According to my analysis, the Cu, Mn, and Fe moments become ordered at the same temperature, 17.9 K.