TWO-COMPONENT FERRIMAGNETIC CERAMICS SYNTHESIZED IN A SOLAR FURNACE

The iron oxide and calcium phosphate components obtained in the required proportions are mixed and ground in a ball mill for 5-8 hours, then dehydrated and dried at 300°C, mixed with the addition of 6-10% PVS to the mass, blocked and dried in a MS-100 compaction unit with a force of 30 kN, melted in a large solar furnace, cooled with water, ground to a particle size of 20 μm, dehydrated, mixed with the addition of 6-10% PVS to the mass, molded in a MS-100 compaction unit with a force of 30 kN, dried at 300°C, fired in a selite furnace at 1280°C for 15-16 hours and cooled at 20-40°C for 4-5 hours. The results show that ferrimagnetic ceramics with the components Ca3(PO4)2 and Fe2O3 form phases Fe2,939O4, CaFe2O4, Ca28,8Fe3,2 (PO4)21O0,5, the particle size is less than 20 μm, the presence of Ca, P, O, Fe elements, the Curie temperature is 740 K and the resistivity is 3.4*109 Ohm*m.