摘要
讨论了磁性超微粒磁结构的线度效应(单畴结构,超顺磁驰豫)、磁特性的线度效应(饱和磁化强度、矫顽力、磁化率及磁转变温度)、磁聚集的分形特性以及线度效应对粒子分形聚集的影响,并介绍了目前有关的实验研究和理论工作进展.
The following problems were diswssed (1) The size effects in the magnetic structure (single-domain structure, superparamagnetic relaxation). (2)The size effcts in the magnetic properties (saturation magnetization, magnetic coercivity, susceptibility and magnetic transition temperatures); (3)The fractal properties and the size effects in the magnetic aggregation. The current status in experimental and theoretical studies for these were alsc briefly reviewed.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
1992年第4期461-466,共6页
Journal of Southwest China Normal University(Natural Science Edition)
关键词
超微粒
线度效应
分形
磁性
ultrafine particle
size effect
fractal
