Method of preparing greigite granulous nano magnetic material through thermal transition decomposition method

摘要: The invention provides a preparing method of nano magnetic material. In the experiment, sodium thiosulfate (Na2S2O3), sulfide (Na2S), ferrous sulfate (FeSO4.7H2O) and other inorganic nontoxic materials are adopted, by means chemical precipitation reaction in wet stage high-temperature thermal decomposition process dry stage, at temperature 200 DEG C, transition experiment is used for successfully granulous mineral material greigite (Fe3S4) with high ferromagnetism, crystal structure morphology features Fe3S4 represented through XRD SEM, performance sample vibrating magnetometer. It indicated results that prepared pure has excellent performance. research solves problem pure-phase difficult to synthesis great significance developing novel functional materials.