Synthesis of dispersed iron oxides with controlled magnetic properties in pulsed arc discharge plasma

Crystalline phases of iron oxide (Fe₃O₄ и ε-Fe₂O₃), characterized by high magnetic characteristics (saturation magnetization and coercive force), attract scientific and practical interest. Despite numerous known methods for the synthesis of magnetite, obtaining the epsilon phase still remains difficult. This paper presents the results demonstrating the possibility of controlled obtaining the considered iron oxide phases in a single pulsed high-energy synthesis process. Optimizing the process parameters results in a dominant yield of each phase at a level exceeded 85 wt. %. Such controlled synthesis provides the corresponding change in magnetic characteristics and magnetic behavior of the synthesized dispersed products.

Authors: I. I. Shanenkov, A. I. Tsimmerman, A. R. Nassyrbayev, I. S. Zhumabaev, A. S. Ivashutenko, D. S. Nikitin, A. A. Sivkov

Direction: Electrical Engineering

Keywords: arc discharge plasma, plasma-chemical synthesis, iron oxides, magnetic properties

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