METHOD FOR STRONTIUM HEXAFERRITE NANOPARTICLES PREPARATION

摘要

FIELD: chemistry.;SUBSTANCE: method for strontium hexaferrite nanoscale particles production includes mixing of a strontium nitrate solution in distilled water with a ferric nitrate solution in glycerol and distilled water solution to achieve the atomic ratio Sr/Fe=1:10, continuous heating and stirring at 50°C for one hour, addition of ammonia and polyethylene glycol in a ratio of 5:1, stirring of the resulting mixture at 80°C for 8 hours and centrifuging at a speed of 11000 rpm, calcination at 450°C for 1.5 hours, and sintering at 1000-1100 °C, all heating and stirring processes are conducted under the influence of continuous ultrasonic irradiation with frequency of 10-25 kHz.;EFFECT: increased homogeneity of strontium hexaferrite nanoparticles size.;3 ex