据报导,美国亚特兰大的乔治亚工业研究院的研究人员已能控制某一类纳米粒子的尺寸大小和磁性能。迄今为止,这些研究人员的研究重点在CoFe_2O_4尖晶石铁氧体。借助于各种化学方面和改变加工条件的手段,他们精确地已设计出这类材料的性能以适合于各种特殊的应用。 约翰·张介绍说“我们正在了解控制这些粒子的性能的基本方法,以化学的方式在原子水平上巧妙地处理这种磁相互作 It is reported that researchers at the Georgia Institute of Technology in Atlanta, the United States, have been able to control the size and magnetic properties of a certain class of nanoparticles. So far, the researches of these researchers have focused on CoFe2O4 spinel ferrite. By means of a variety of chemistries and changing processing conditions, they have precisely engineered the properties of such materials to suit a variety of special applications. John Zhang Jieshao said: "We are now learning the basic method of controlling the performance of these particles in a chemical way that subtly handles this magnetic interaction at the atomic level