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The novel compound has been successfully synthesized. Its x-ray pattern can be indexed with a monoclinic symmetry and the space group. Thermomagnetic analysis gives a magnetic ordering temperature of 400 K. The saturation magnetization of at 4.2 K and room temperature are and and the anisotropy fields at 4.2 K and room temperature are 5.2 T and 1.7 T, respectively. A systematic analysis of the magnetic properties of novel compounds (R = Y, Ce, Pr, Nd, Sm, Gd, or Tb) at 4.2 K has been performed on the basis of their saturation magnetization. This suggests that the saturation magnetization of compounds with a low stabilizing element concentration can be calculated roughly from a combination of those of the rhombohedral or hexagonal and tetragonal units in a ratio of 1:1. |