Preparation of Nickel, Iron, and Cobalt Nanopowders via Reduction of Salts with Sodium Dissolved in Liquid Ammonia

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Nickel, iron, and cobalt powders are prepared via reduction of salts with sodium dissolved in liquid ammonia. The low temperature of the process and the ability of liquid ammonia to stabilize dangling chemical bonds notably reduce the growth rate of metal particles and prevent their aggregation. The magnetic properties of the nanopowders are investigated.

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