Diffraction patterns in ferrofluids: Effect of magnetic field and gravity

被引：21
|
作者：
Radha, S. [1 ]
Mohan, Shalini [1 ,2 ]
Pai, Chintamani [1 ]
机构：
[1] Univ Mumbai, Dept Phys, Bombay 400098, Maharashtra, India
[2] Univ Mumbai, UM DAE Ctr Excellence Basic Sci, Bombay 400098, Maharashtra, India
来源：
PHYSICA B-CONDENSED MATTER | 2014年 / 448卷
关键词：
Thermal lensing; Self-diffraction; Ferrofluid aggregation; Magnetic field; Gravity dependence; Spatial phase modulation; SCATTERING;
D O I：
10.1016/j.physb.2014.04.050
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this paper, we report the experimental observation of diffraction patterns in a ferrofluid comprising of Fe3O4 nanoparticles in hexane by a 10 mW He-Ne laser beam. An external dc magnetic field (0-2 kG) was applied perpendicular to the beam. The diffraction pattern showed a variation at different depths of the sample in both zero and applied magnetic held. The patterns also exhibit a change in shape and size as the external field is varied. This effect at due to thermally induced self-diffraction under the influence of gravity and external magnetic held. (C) 2014 Elsevier By. All rights reserved.
引用
收藏
页码：341 / 345
页数：5
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