Диагностика магнитного состояния реальной высокодисперсной ферритовой системы с широким распределением частиц по размерам

Анотація

The magnetic state of a particles system of Ca0,5Ba0,5Fe12O19 hexaferrite with sufficiently broad size distribution within a single domain range was investigated. To obtain the ferrite was used method, that employing elements of cryochemical technology, thereby achieved full ferritization at 900 oC. The presence of superparamagnetic state was determined by measuring the temperature dependence of the magnetization. The temperature-field transition conditions of highly anisotropic particles from magnetostable to the superparamagnetic state were determined, whereby the corresponding (H-T) diagram formatted.