Development of new function by suppression of martensitic transition in Fe-Pt ally

研究了多元醇溶液中Fe和Pt盐的还原反应，得到了fcc结构的Fe-Pt合金细颗粒。在403 K下，以Fe/Pt=2.3的摩尔比还原Fe和Pt盐，得到了具有fcc结构的Fe-Pt合金的细颗粒。它们的铁浓度约为50% at %。当摩尔比为Fe/Pt>2.3的铁铂金属盐在403 K以下还原时，也能得到类似的细颗粒。这些结果表明，在较低的反应温度和较高的铁浓度溶液中，Fe- pt合金细颗粒的形成都得到了促进。

The reduction of Fe and Pt salts in the polyol solution has been examined to obtain the Fe-Pt alloy fine particles with a fcc structure. The fine particles of the Fe-Pt ally with fcc structure are obtained by the reduction of Fe and Pt salts with the molar ratio Fe/Pt=2.3 at 403 K. Their Fe concentration is about 50 at %. Similar fine particles are obtained when the Fe and Pt metal salt with the molar ratio Fe/Pt>2.3 is reduced below 403 K. These results suggest that the formation of Fe-Pt alloy fine particles with the Fe concentration of about 50 at % is enhanced by the reduction in relatively both low reaction temperature and high Fe concentration solution.