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本文研究了聚乙烯吡咯啉酮（ＰＶＰ）和Ｎ，Ｎ－二甲基甲酰胺（ＤＭＦ）两种试剂对微波辐射制备均分散α－Ｆｅ２Ｏ３纳米粒子的影响。实验表明微波辐射和加入ＰＶＰ或ＤＭＦ都可以加快相转变的速度；还可以使粒子明显变小。在一定浓度范围内，粒子的长轴Ｄ与添加剂的量成反比。通过调整添加剂的用量可以达到控制粒子形状和大小的目的。
The effects of polyvinyl pyrrolidone (PVP) and N, N-dimethylformamide (DMF) on the synthesis of α-Fe2O3 nanoparticles by microwave irradiation were studied. Experiments show that microwave irradiation and the addition of PVP or DMF can accelerate the phase transition speed; can also make the particles significantly smaller. Within a certain concentration range, the major axis D of the particles is inversely proportional to the amount of additive. By adjusting the amount of additives can achieve the purpose of controlling the shape and size of the particles.