Peculiar properties of crystal-chemical stucture of spinels of the system Mg(FexCr2-x)O4 obtained through the hydroxide coprecipitation method and solid state technology

Authors

  • Анна Віталіївна Луцась Vasyl Stefanyk Precarpathian National University 57 Shevchenko str., Ivano-Frankivsk, Ukraine, 76018, Ukraine
  • Іван Петрович Яремій Vasyl Stefanyk Precarpathian National University 57 Shevchenko str., Ivano-Frankivsk, Ukraine, 76018, Ukraine
  • Микола Петрович Матківський Vasyl Stefanyk Precarpathian National University 57 Shevchenko str., Ivano-Frankivsk, Ukraine, 76018, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2015.51058

Keywords:

ferrite, spinel, crystal lattice, precipitation method, ceramic technology

Abstract

Using the coprecipitation method of metal hydroxides, magnesium ferrite-chromites of the system Mg(FexCr2-x)O4 were synthesized, and a comparative analysis of crystal-chemical parameters of the obtained samples with similar samples, made through the solid state technology was performed. The precipitation method provides high dispersion, lower sintering temperature and more even distribution of components in the sintered ferrite. It was found that in samples, synthesized through the hydroxide coprecipitation method, the value of lattice constant is greater and reversibility degree is lower compared with samples synthesized through the solid state technology. The formation of magnesium ferrite-chromites from coprecipitated hydroxides is completed at temperatures 500-700 ºC lower than with the standard solid state technology using oxides. The dimensions of the crystallites in the samples obtained through the hydroxide coprecipitation method are within 50-130 nm and are smaller than samples, obtained through the solid state technology (200-400 nm). The changes in dispersion and ionicity degree of the chemical bond, depending on the composition and synthesis method were monitored. The obtained results demonstrate the possibility of synthesis through the hydroxide precipitation of ferrites of the system Mg-Fe-Cr and allow to predict their crystal-chemical parameters.

Author Biographies

Анна Віталіївна Луцась, Vasyl Stefanyk Precarpathian National University 57 Shevchenko str., Ivano-Frankivsk, Ukraine, 76018

PhD, Associate Professor

Department of Inorganic and Physical Chemistry

Іван Петрович Яремій, Vasyl Stefanyk Precarpathian National University 57 Shevchenko str., Ivano-Frankivsk, Ukraine, 76018

Doctor of Physical and Mathematical Sciences, Professor

Department of Materials Science and new technologies

Микола Петрович Матківський, Vasyl Stefanyk Precarpathian National University 57 Shevchenko str., Ivano-Frankivsk, Ukraine, 76018

PhD, Associate Professor

Department of Inorganic and Physical Chemistry

Deputy Director

Institute of Natural Sciences

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Published

2015-10-16

How to Cite

Луцась, А. В., Яремій, І. П., & Матківський, М. П. (2015). Peculiar properties of crystal-chemical stucture of spinels of the system Mg(FexCr2-x)O4 obtained through the hydroxide coprecipitation method and solid state technology. Eastern-European Journal of Enterprise Technologies, 5(6(77), 57–63. https://doi.org/10.15587/1729-4061.2015.51058

Issue

Vol. 5 No. 6(77) (2015): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2015 Анна Віталіївна Луцась, Іван Петрович Яремій, Микола Петрович Матківський

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