Abstract

Mukhametkali Musagalievich Mataev¹, Gennady Semenovich Patrin², Karima Zhaisanbekovna Seitbekova¹, Zhanar Yliasovna Tursinova¹ and Moldir Rashidovna Abdraimova¹

DOI : http://dx.doi.org/10.13005/ojc/350335

The article presents the results of the synthesis and study of XRD of new chromite-yttrium manganese doped with alkaline earth metal Ca. For the first time synthesized sol-gel by double chromite-yttrium manganese with embedded calcium has a rhombus structure, with the number of formula units Z=4, the elementary cell of crystals has the following lattice parameters: a=5.42 Å; b=7.51 Å; C=5.26 Å. The correctness of the results of x-ray studies confirm a satisfactory correspondence between the values of  pycnometric and x-ray densities, as well as the coincidence of theoretical and experimental values of the inverse values of interplanar distances (10⁴/d²). The Miller indices (hkl) refer to a face-centered rhombic singony. The crystal morphology of the synthesized powders was studied using a scanning electron microscope (SEM), which shows the dense structure of crystallites from 5 to 100 microns. Semi-quantitative elemental analysis confirms the embeddedness of calcium and chromium ions in the structure of the complex yttrium manganite, as well as the monodispersed of the sample. The results of elemental analysis of complex chromite-manganite yttrium with the addition of calcium ions, on the electron scanning microscope shows that the atomic percentage of the elements in the composition of the chromite-manganite yttrium, almost the same formula chromite - manganite composition – Y_0,5 Са_0,5Cr_0,5Mn_0,5O₃.

Chromium Doped Manganite; Electron Microscopy; Sol-Gel Processes; X-ray Diffraction

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