PrCo2Si2has a collinear antiferromagnetic structure with a wave vector Q1= (0, 0, 1) for T < T1= 9 K, a high-order commensurate one with Q2= (0,0,25/27) for T1≤ T < T2= 17 K and with Q3= (0,0,7/9) for T2≤ T < TN= 30 K. Molecular field calculations of the moment arrangements and magnetization processes of the compound were made with a molecular field model, and the field-temperature magnetic phase diagram was reproduced. The magnetic transitions are discussed in connection with the wave-dependent molecular field coefficients of the compound.
Hattori, K., Sakamoto, M., Kawae, T., Hasegawa, Y., Shigeoka, T., Takeda, K., & Iwata, N. (2000). Molecular field calculations of the phase diagram in PrCo2Si2. Journal of Magnetism and Magnetic Materials, 213(3), 370–376. https://doi.org/10.1016/S0304-8853(00)00018-4