In this work, we were interested in the Ca_2−xNd_xMnO₄ compounds when (0.1 ≤ x ≤ 0.4). These oxides are synthesized through the solid-state method. In this study, we investigated the evolution of the structure, the magnetic properties and the Mn³⁺/Mn⁴⁺ ratio with the Nd content. The morphological study shows a decrease in the size of the grain in relation to x. The X-ray diffraction reveals a transition from the tetragonal phase to the orthorhombic phase when x = 0.4. Magnetic measurements have been taken for all the compounds in the temperature range between 2 and 300 K. The temperature-dependent magnetic susceptibility shows the presence of three transitions T_N, T_C and T_CO. A dramatic difference in magnetic susceptibility between ZFC and FC was observed below the Neel temperatures for Ca_2-xNd_xMnO₄, which shows the onset of a ferromagnetic moment below these temperatures. This moment is caused by the Dzyaloshinskii–Moriya interaction.

在这项工作中，当（0.1≤x≤0.4）时，我们对Ca _2-x Nd _x MnO ₄化合物感兴趣。这些氧化物通过固态方法合成。在这项研究中，我们研究了Nd含量的结构演变，磁性能以及Mn ³⁺ / Mn ⁴⁺比。形态学研究表明晶粒尺寸相对于x减小。当x ＝ 0.4时，X射线衍射揭示了从四方相到正​​交晶相的转变。在2至300 K的温度范围内对所有化合物进行了磁测量。与温度相关的磁化率表明存在三个过渡T _N，T _C和T _CO。在Ca _2-x Nd _x MnO ₄的Neel温度以下，观察到ZFC和FC之间的磁化率存在显着差异，这表明在这些温度以下出现了铁磁矩。这一时刻是由Dzyaloshinskii-Moriya相互作用引起的。