Synthesis and Crystallochemiсal Study of Spinels MgAl2-xCrxO4 Obtained by Co-Precipitation Method
Journal Title: Фізика і хімія твердого тіла - Year 2014, Vol 15, Issue 2
Abstract
The samples of solid solutions MgAl2-xCrxO4 (where x = 0…2 by step 0.2) were synthesized by co-precipitation method. Crystal parameters of spinel solid solutions were calculated: cell parameter a, anion parameter u, the deviation from the ideal structure δ, tetrahedral and octahedral distances α and β, the volume V and density of the unit cell, the angles between chemical bonds AOB and the BOB. It is shown that α does not change (0.1938 nm), β varies from 0.1903 – 0.1987 nm; unit cell parameter changes from 0.8057 to 0.8281 nm; anionic parameter that indicates the deviation from the ideal structure varies from 0.3889 to 0.3851; δ varies from 0.0139 to 0.0101, the volume of the unit cell changes from 0.5229 to 0.5678 nm3; X-ray density varies from 3606.74 to 4491.55 kg/m3; angle tetrahedral cation–Оxygen–octahedral cation increases ( AOB = 160.19…o – 161.53…o), and the angle of the octahedral cation–Оxygen–octahedral cation decreases ( BOB = 96.63…o – 94.82…o).
Authors and Affiliations
H. O. Sirenko, T. R. Tatarchuk, M. V. Myslin
Keywords
Related Articles
- EP ID EP316040
- DOI -
- Views 52
- Downloads 0
Physico-Chemical Investigation of the Pb-Te-O System
In present work, the physico-chemical analysis of the interaction process for PbO and TeO2 has been carried out. The ternary compound PbTeO3 was obtained by solid-phase reaction; this compound was identified by X-ray dif...
Distribution of Temperature Profiles in Nonstoichiometric SiOx Films by Laser Annealing of the Two Beams
Theoretical study of temperature distribution profiles in nonstoichiometric SiOx films by annealing two laser beams of equal intensity. Temperature distribution on the surface of the films SiOx, irradiated laser beams at...
Effect of pH of Synthesis on CdS/L-cys Colloidal Solutions Optical Properties
The purpose of this paper is to summarize experimental data of CdS/L-cystein nanoparticles (NPs) colloid solutions optical properties as function of 3-component mixture (Cd2+ – S2- – L-cys) content and pH. The NPs synthe...
Mechanical Activation of Mixtures SiO2/γ-Fe2O3 and its Impact on the Distribution of Valence Electrons
Crystalline and electronic structures of SiO2/γ-Fe2O3 mixtures have been analyzed using X-ray diffraction (XRD) and ultra-soft X-ray emission spectroscopy (USXES). The energy redistribution of Fesрd, Sisp and Op valence...
Application of the Mean-Field Kinetic Method for Description of the Reaction Diffusion
In this paper we present the results of modeling of the reaction diffusion in fcc structure between pure component A and orderedphase A1B1using the kinetic mean-field method. Theformationtime of the ordered phase A3B1 (i...