Formation and magnetic properties of low-temperature …
The starting materials were Mn powder (>99% purity, 40 mesh) and Bi powder (>99.5% purity, 100 mesh) supplied by Acros Organics without further purification. For the size-dependence experiments, the Mn powder was ball-milled for 3 hr and sieved with a 700-mesh screen to obtain the Mn powder …
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