COMPOSITE SEMICONDUCTOR-BASED FERRIMAGNETIC MATERIALS OBTAINED BY PYROLYSIS OF SILICON CARBON RAW MATERIALS

Abstract

In the modern scientific world, the development of new ferrimagnetic materials and methods for their production are one of the main areas of scientific and technical progress of information technologies. In connection with the abovementioned, as a consequence, the increase in technical requirements for them, ferrimagnetic materials used in electrical engineering, electronics, computing and high-frequency technology are replaced by non- metallic composites with broader functional capabilities. From this point of view, ferrimagnetic structures based on semiconductors are of great interest, especially in terms of the specific gravity of low carbon elements.

In this study, carbonaceous formations and silica of technical significance obtained by processing technogenic formations of metallurgical production in Republic of Armenia, as well as chemically pure carbon, were used as raw materials for obtaining materials of the above-mentioned significance. Based on theoretical prerequisites, the pyrolysis method was preferred as an effective method for targeted processing of experimental samples from the mentioned materials.

As a result of pyrolysis of carbon-silicate raw materials, ferrimagnetic electrically conductive materials with a complex chemical structure are obtained, in which carbon acts as various elements, as well as compounds of silicon carbide and carbon monoxide, and silicon - in the form of silica, silicon carbide and iron silicide with the formula Fe5Si3. In this series, the most effective are the processes of high-temperature pyrolysis of carbonaceous formations occurring in the environment of reducing gases - the temperature range of 300 ... 1270 ° C. It is also obvious that the above conditions contribute to the full use of silica and carbon contained in the raw materials, which is conditioned by the catalytic nature of the interaction.