The structural, electronic, and magnetic properties of a sol-gel prepared series of La₂Ni_1−x Sc _x MnO₆ compounds have been extensively studied using x-ray diffraction, x-ray absorption near edge structure, and dc magnetization techniques, respectively. The entire series was isostructural and exhibited the La₂NiMnO₆ double perovskite P2₁/n monoclinic structure. The nonmagnetic Sc³⁺ substitution led to the evolution of competing magnetic phases in La₂Ni_1−x Sc _x MnO₆. The substitution also caused an increase in lattice parameters, cell volume, and bond lengths. Consequently, Sc³⁺ dilution resulted in a dramatic decrease in Curie temperature, suggesting a reduction in the strength of the Ni²⁺–O²⁻–Mn⁴⁺ superexchange ferromagnetic interaction. The Sc³⁺ substitution generated antisite defects, which significantly suppressed the saturation magnetization of the system. The competing magnetic interactions observed in the La₂Ni_1−x Sc _x MnO₆ system are discussed in terms of cation disorder, cation valances, and changes in the bond lengths/angles, caused by the Sc³⁺ substitution.

溶胶-凝胶法制备的一系列La ₂ Ni _{1− x} Sc _x MnO ₆化合物的结构，电子和磁性，已经通过x射线衍射，近边缘结构的x射线吸收和dc磁化技术进行了广泛研究，分别。整个系列是同构的，并表现出La ₂ NiMnO ₆双钙钛矿P2 ₁ / n单斜晶结构。非磁性Sc ³⁺取代导致La ₂ Ni _{1− x} Sc _x MnO ₆中竞争性磁性相的演化 。取代还引起晶格参数，晶胞体积和键长的增加。因此，Sc ³⁺稀释导致居里温度急剧下降，表明Ni ²⁺ -O ^2- -Mn ^4+超交换铁磁相互作用的强度降低。Sc ³⁺取代产生反位缺陷，从而显着抑制了系统的饱和磁化强度。讨论了在La ₂ Ni _{1− x} Sc _x MnO ₆系统中观察到的竞争性磁相互作用，涉及由Sc引起的阳离子无序，阳离子化合价和键长/角的变化。 ³⁺取代。