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Pure BaFe 12 O 19 nanoparticles, having single magnetic domain sizes, were obtained at 700°C using a process combining the citrate precursor method and spray technique. A neutralized aqueous solution, containing Ba 2+ and Fe 3+ chelated by citric acid, was nebulized to undergo thermal decomposition in a flowing air with a maximum temperature of 250°C. The dried solid...
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