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0STRUCTURAL FEATURES OF BERYLLIUM CERAMICS
NOKANOVA A.D, KVEGLIS L.I.
Ust-Kamenogorsk, Sarsen Amanzholov East Kazakhstan University
BELOKUROVA K., PAVLOV A.V.,FADEEV T.V.
Department of Physics and Technology Krasnoyarsk, Siberian Federal University
Annotation. The great interest shown in composite ceramics with introduced impurities is caused by the needs of new areas of special instrumentation in the development of modern long-range communication systems, radar and navigation, broadband special purpose systems.The improvement of the functional characteristics of beryllium oxide ceramics and the expansion of its scope in various fields of modern electronic technology are possible due to the study of the influence of external influences on the structure of the material.
The purpose of the work is to study the effect of electron irradiation on the structure of beryllium oxide ceramics with additives of micro- and nanopowders of titanium dioxide.
To study the composition and properties of the initial powders, as well as the processes occurring during electron irradiation of the nanocomposite, modern methods of physico-chemical
analysis were used: ^ 1 1 ' ' alysis.
Figure 1 -SEM image and spectral analysis of ceramics of the composition VeO + 28.5 %
microTiO2 + 1.5 % nanoTiO2, The content of the component in the samples before and after irradiation was compared on a scanning electron microscope with a microanalyzer. The structure was studied using a Bruker diffractometer.
Электронное изображение 1
Figure 2. Results of X-ray diffraction of the irradiated sample
Figure 3. Results of X-ray diffraction of an unradiated sample
Comparing the diffractograms obtained from an irradiated and non-irradiated sample, it can be said that structural and phase transformations occurred during the irradiation process
O Kal
lmm
Sample before
Sample afterirradiation 1.4 MeV
Comparing the results obtained in a scanning electron microscope, we can say that after irradiation, the chemical composition is equalized.
Magnetic measurements
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Figure 4. Torque curves of the irradiated sample
Conclusions.
Magnetic measurements have shown that after irradiation, the samples become ferromagnetic. Ferromagnetic impurities (Fe,Ni,Co) were not found in beryllium ceramic samples. The nature of ferromagnetism may be related to a change in the density of electronic states.
LITERATURE
1. The evolution of electronic states: atom - molecule - cluster -crystal. Nyavro, Alexander Vladislavovich. Tomsk State University, 2013.
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