Synthesis and crystal structure determination of YCo1−xFexO3 (x = 0,0.33, 0.5, 0.67 and 1) perovskites

Dimitrovska-Lazova, Sandra and Aleksovska, Slobotka and Tzvetkov, P (2015) Synthesis and crystal structure determination of YCo1−xFexO3 (x = 0,0.33, 0.5, 0.67 and 1) perovskites. J. Chem. Sci., 127 (7). pp. 1173-1181. ISSN 0973-7103

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The results on synthesis, crystal structure determination and calculation of crystallochemical
parameters of YCo1−xFexO3 (x = 0, 0.33, 0.5, 0.67 and 1) perovskites are presented in this work. The compounds
within this series were synthesized by solution combustion method using two different fuels: urea and
citric acid. It was found that iron-containing perovskites, obtained by citric acid as a fuel are of better quality
and crystallinity. All the compounds crystallize in Pnma space group with Z = 4. According to the structure
and the calculated crystallochemical parameters, the coordination number of Y3+ in these perovskites is 8. The
unit cell parameter relationship is of O−type suggesting that the main reason for distortion of ideal perovskite
structure is the octahedral tilting. The deformation of the octahedrons, as well as the tilting angles, are increasing
with the increasing content of Fe3+ but the calculated global instability indices (GII) show that the stability
of the perovskite structure is increasing with increasing of the Fe3+ content.

Item Type: Article
Uncontrolled Keywords: Complex perovskites; XRD; crystal structure; crystallochemical calculations
Subjects: Natural sciences > Chemical sciences
Medical and Health Sciences > Other medical sciences
Divisions: Faculty of Medical Science
Depositing User: Biljana Kosturanova
Date Deposited: 22 Dec 2015 14:50
Last Modified: 22 Dec 2015 14:50

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