磁场作用下Fe_3O_4磁性液体薄膜形貌和热效应

Study of the Morphological Variation and Hyperthermia Effect of Magnetofluid in an Applied Magnetic Fields

利用化学共沉淀法制备纳米Fe3O4 微粒 ,并制成磁性液体 .研究磁性液体薄膜在不同磁场下的形貌变化 .用磁热重分析技术 (MTGA)研究纳米Fe3O4 微粒样品加热过程的相变 .初步测量在高频电磁场下纳米Fe3O4 微粒混合物的发热效应 .

The homogeneous magnetofluid was prepared with namo particles of Fe\-3O\-4 obtained by the coprecipitation technique.The morphologies of magnetofluid films were observed in different applied magnetic fields.The phase transformation of Fe\-3O\-4 during the heating was studied by using techniques of TG and MTGA(magnetic thermogravimetric analysis).The hyperthermia effect of ultra\|fine particles of Fe\-3O\-4 was measured by means of high\|frequency magnetic field.