【作者】 黄彦；

【导师】 李建；

【作者基本信息】 西南师范大学 ， 凝聚态物理， 2005， 硕士

【摘要】 本文介绍了自形成磁性液体的制备方法,研究了微粒的粒径分布、自形成磁性液体基本物理性能(密度、稳定性、零磁场粘度、磁化特性)及其场致光透射变化。制备的改进和微粒的粒径分布的研究,为磁性液体基本物理性能的定量化研究做了铺垫,而基本物理性能的定量化研究为磁性液体场致光透射变化的定量化研究打下基础。本文的研究从制备到磁光各方面都具有定量化的发展: (1) 确定了Q值,使不同批次的自形成磁性液体保持相同的化学组成;改进制备方法,使不同批次的自形成磁性液体的体积分数保持一致。 (2) 研究多种样品的粒径分布,解除了制备中丙酮对磁性液体微粒形成影响的顾虑,了解到微粒被酸腐蚀的程度较少。 (3) 对密度的测量,确定了磁性液体密度与体积分数的关系;通过稳定性的分析,对两微粒之间的势能进行了研究,计算出离子型磁性液体最大体积分数;对自形成磁性液体零磁场粘度的研究,提出了“涨落团更多还原

【Abstract】 The preparation technique of self-formed ferrofluid has been introduced in this paper, at the same time the particles size distribution, the basic physical characters include density, stability, viscosity in zero field and property of magnetization, the field-induced transmitted light of self-formd ferrofluid has been studied. The amelioration of the preparation technique and the studying of the particles size distribution make the prepare for the quantificational studying of basic physical characters, however, the quantificational studying of basic physical characters make the prepare for the quantificational studying of field-induced transmitted light in ferrofluid. The development of quantificational studying from preparation to field-induced transmitted light can be seen in this paper:(l)The value of Q has been confirmed. The same chemical composition offerrofluids can be obtained, and be independent of one time preparation withthis Q value. The amelioration of the preparation technique make theferrofluids which prepared any times has the same volume fraction.(2) Known the acetone has the less effect to the forming of ferrofluids’ particles,更多还原