超顺磁特性的磁性流体(Ferrofluid),是由亚畴尺寸的铁磁性或亚铁磁性的微粒子悬浮于载液中所构成的一种胶态新型磁性材料。它兼有固体强磁性物质与流体的特性。磁性流体问世于本世纪三十年代,到了六十年代中,由于其潜在的技术应用,国内外许多研究人员,对其物理和化学性质,理论模型,制备技术,才作了大量研究,并取得了相当大的进展。 The superparamagnetic Ferrofluid is a new colloidal magnetic material formed by suspending ferromagnetic or ferrimagnetic particles of a subdomain size in a carrier liquid. It combines the characteristics of solid ferromagnetic substances and fluids. Due to its potential application of technology, many researchers at home and abroad have made a great deal of researches on the physical and chemical properties, theoretical models, and preparation techniques of magnetic fluids in the thirties of this century. In the 1960s, A considerable progress.