振荡脉冲磁场下的纳米磁性液体光双折射效应弛豫现象
PDF下载 (9432)龚 雁 1,陆樟献 2,王正才 3.振荡脉冲磁场下的纳米磁性液体光双折射效应弛豫现象[J].宁波大学学报(理工版),2018,31(4):88-91.DOI:
GONG Yan 1,LU Zhang-xian 2,WANG Zheng-cai 3.The relaxation phenomenon of the birefringence effects of magnetic fluid under the oscillatory pulsed magnetic field[J].Journal of Ningbo University(Natural Science & Engineering Edition),2018,31(4):88-91.DOI:
| Title: | The relaxation phenomenon of the birefringence effects of magnetic fluid under the oscillatory pulsed magnetic field |
| 作者: | 龚 雁 1, 陆樟献 2, 王正才 3 |
| Author(s): | GONG Yan 1, LU Zhang-xian 2, WANG Zheng-cai 3 |
| 关键词: | 纳米磁性液体; 光双折射效应; 弛豫 |
| Keywords: | magnetic fluid; magneto-optic birefringence effect; relaxation |
| 分类号: | O436.4 |
| 文献标识码: | A |
| 摘要: | 为研究水基纳米磁性液体在振荡脉冲磁场下的光双折射效应弛豫现象, 通过分析线偏振光经过水基纳米磁性液体薄片和检偏器后的光强随振荡脉冲磁场的变化情况, 结果表明: 水基磁性液体磁化主要取决于Nèel弛豫效应, 而磁光效应(即双折射效应)由于受到磁性颗粒克服热运动、磁性颗粒相互排斥和基液粘滞力下的空间排列速度等因素的影响, 明显具有滞后现象. |
| Abstract: | In this paper, the relaxation phenomenon of the birefringence effect of water-based magnetic fluid thin films in the oscillatory pulsed magnetic field are studied. The research is conducted focusing on the changing situation of the optical intensity of the linear polarized light via passing the water-based magnetic fluid and a light analyzer in the oscillatory pulsed magnetic field. The experiment results show that the magnetization of water-based magnetic fluid depends mainly on the Nèel relaxation, but the magneto-optical birefringence effect is influenced by the spatial arrangement velocity of magnetic particles to overcome the thermal movement and the viscous force of water. |
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| 备注/Memo: | 收稿日期: 2017－09－05. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/基金项目: 宁波市自然科学基金（2016A610013, 2014A610080）; 浙江省医药科技卫生科技计划（2018KY737）.第一作者: 龚雁（1973－）, 女, 江苏南京人, 主任医师, 主要研究方向: 眼科. E-mail: 18906627688@189.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
