Аңдатпа
Manganites-perovskites are an important class of materials with unique physical properties such as tremendous magnetoresistance and magnetocaloric effect. They have a perovskite structure and can be described by the general formula AMnO₃, where A is a rare earth or alkali metal and Mn is manganese. The introduction of dopants into the composition of rare-earth element manganite can serve as an effective way to improve the properties of semiconductors. The aim of this work is the synthesis and X-ray diffraction study of a new nickelite-manganite of neodymium and magnesium of the composition NdMg2NiMnO6. A new nickelite-manganite of neodymium and magnesium composition NdMg2NiMnO6 was synthesized by the method of ceramic technology. The identification was carried out by XRD method. On the basis of indication it was found that NdMg2NiMnO6 crystallizes in cubic syngony with the following lattice parameters: a=10.056 ± 0.067 Å; Z=4; Vo=4139.39 ± 0.20 Å3; Vounit cell.=1034.85 ± 0.02 Å3, rх-ray.=2.5824; rpycn. =2.4970 ± 0.052 g/cm3. The tolerance factor t=0.90, which is a criterion of structure stability, was calculated. IR spectra of the investigated nickelite-manganite were obtained. The obtained results are of interest for further work on the study of thermodynamic, electrophysical properties of this compound and can be used in inorganic materials science to obtain similar substances with promising physical and chemical properties, and as initial information arrays for loading into fundamental data banks on X-ray characteristics.