摘要
研究了Massart法制备的CuFe2O4离子型磁性液体在磁场作用下,光透射率随时间的变化规律.光透射率的变化与磁性液体的体积分数、磁场大小、光路及磁场方向有关.为解释光透射率变化的原因,建立了在磁场作用下,磁性液体纳米微粒形成链,并在磁场梯度作用下微粒链向中心会聚,而并列链间的排斥力又使链发散的链振荡运动的微观模型.
The change of transmittance of magnetic-light with time when light goes through ionic CuFe2O4 ferrofluids was studied. The change was found to be related with volume fraction, magnetic field size and the direction with light and magnetic field. Under the magnetic field, nanoparticles in the ferrofluids formed a magnetic chain, and under the gradient of magnetic field, the magnetic chain flocked to the center. For the repulsion between parallel chains, the chain would radiate. In this paper, the authors explain the reason for changes in light transmittance with the above discussed model.
出处
《西南大学学报(自然科学版)》
CAS
CSCD
北大核心
2008年第3期14-19,共6页
Journal of Southwest University(Natural Science Edition)
基金
重庆市自然科学基金资助课题(CSTC2007BA3031)
西南师范大学发展基金资助课题(SWNUF2004005)
关键词
磁性液体
光透射率
梯度磁场
ferrofluid
light transmittance
gradient of magnetic field