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摘要
The novel Tb3NiSi2 phase adopts the La3NiGe2-type structure (Puma, N 62, oP24). According to the thermal dependence of the magnetization measurements in 100 Oe applied field, Tb3NiSi2 undergoes a ferromagnetic-like transition at 135 K and a spin-orientation transition at 53 K. Based on the neutron diffraction studies in a zero applied field, Tb3NiSi2 shows four types of mixed ferromagnetic-antiferromagnetic ordering below similar to 130 K, 82 K, 66 K and 53 K. The unit cell of Tb3NiSi2 undergoes an isotropic compression down to 143 K and an anisotropic one below the temperature of the ferromagnetic transition at similar to 130 K: the a cell parameter increases, whereas the b and c cell parameters and unit cell volume decrease with the decreasing temperature. At 1.5 K the terbium magnetic moment reaches the value 9.1(1) mu(B).
- 出版日期2014-1
