Magnetic Properties Change in Fe3O4 Nanoparticles Grown under Magnetic Fields

摘要：

Magnetite nanoparticles Fe3O4 have been synthesized under magnetic fields by the method of co-precipitation. XRD and TEM studies reveal that higher strength of magnetic field in the process tends to result in formation of larger grains with better crystallinity. The magnetic measurements show that the powders obtained under magnetic field possess excellent magnetic properties. The improved magnetic properties were suggested to be originated from the thinner nonmagnetic layer and strengthened superexchange interactions of Fe-O-Fe due to magnetic field making Fe3O4 nanoparticles well crystallinity.

关键词： Magnetic field Crystallinity Magnetic properties

作者: 王军 姚明 吴叶军 徐传会

作者单位: 宁波市宁波大学理学院,315211

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）