超微磁性Fe_3O_4粒子的制备

PREPARATION OF ULTRAFINE MAGNETIC Fe 3O 4 PARTICLES

本文选用ＮＨ３·Ｈ２Ｏ作沉淀剂，用共沉淀的方法制备出了超微磁性粒子（５～１００ｎｍ），优化出了最佳的制备流程，着重研究了熟化对Ｆｅ３Ｏ４粒子的磁性能的影响，并对此影响提供了理论的分析和研究．

NH 3·H 2O is chosen to act as preciptating agent. Ultrafine magnetic Fe 3O 4particles (50～100nm) are prepared by copreciptation. The best preparation circuit is optimized. The theoretical research about the effect of aging on Fe 3O 4magnetism has been also offered in this paper.