Plate-like SrFe12O19 particles prepared by modified sol-gel methodстатья
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Дата последнего поиска статьи во внешних источниках: 11 апреля 2016 г.
Аннотация:M-type strontium hexaferrite powders were synthesized by the modified sol-gel method with calcination in NaCl matrix in a temperature range 790-850 °C for 1 h. X-ray diffraction analysis shows the formation of pure M-type strontium hexaferrite phase. The SrFe12O19 particles have a plate-like shape with a mean diameter 130-185 nm and a thickness 45-55 nm. The prepared powders show a saturation magnetization 70-72 emu/g and a coercive force 6.0-6.4 kOe. The suggested synthesis method combines simplicity, using of low calcination temperatures and allows to synthesize pure strontium hexaferrite powders with excellent hard magnetic properties.