Synthesis and physical and chemical characteristics of Y 0,5 Sr 0,5 Cr 0,5 Mn 0,5 O 3 phases

Abstract

In this work, a solid solution of chromite-manganite of the composition Y 0,5 Sr 0,5 Cr 0,5 Mn 0,5 O 3 was
synthesized using the sol-gel method. The type of syngony, unit cell parameters, x-ray and pycnometric densities were determined
of the new chromite-manganite. The results of chromite-manganite indexing are confirmed by a good correspondence of the
experimental and calculated values of the inverse values of the squares of interplane distances (10 4 /d 2
) and the consistency
of the x-ray and pycnometric densities. It was found that the synthesized chromite-manganite crystallizes in the orthorhombic
syngony and has a perovskite-like structure. According to the results of SEM, chromite-manganite is monodispersed and the
size of the crystallites is distributed from 6 to 20 microns. The result of the study of the dependence of the heat capacity on
the temperature obtained by the TGA method proves the stability of the internal structure and the presence of polymorphic
transformations in the sample under study