Synthesis of Air Stable Iron Nanopowders with Various Methods
Magnetic properties and microstructures of iron-based nanopowders fabricated by several methods, such as sol–gel, thermal decomposition, and self-propagating combustion methods, were investigated. During a subsequent reduction annealing, added aluminum atoms formed coherent oxide shells with a hercynite structure around iron cores in all the nanopowders. In particular, the nanopowders synthesized by the self-propagating combustion method showed the highest saturation magnetization of 175.68 emu/g and oxidation stability to 200 °C in air.
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Document Type: Research Article
Publication date: 2011-08-01
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