Articles

Field-induced of Transmission Light Relaxation Response Behaviors of Ni2O3/Fe2O3 Nanocomposites Ferrofluids

  • HAN Shaona;CHENG Hua
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  • 1. Wanfang Institute of Science & Technology, Henan Polytechnic University, Zhengzhou 451400, China;2. Department of Mathematics and Computer Science, Lijiang Teachers College, Lijiang 674100, Yunnan Province, China

Received date: 2011-11-09

  Revised date: 2013-03-22

  Online published: 2013-09-28

Abstract

The preparation of Ni2O3/Fe2O3 nanocomposites ferrofluids is introduced. The change of the light transmittance with the on-off of the magnetic field is investigated after the light beam parallel to the direction of magnetic field goes through the ferrofluids samples under the influence of external magnetic field with different strength. Result shows that for different volume fractions of ferrofluids, the declining relaxation time of light transmittance increases gradually while the increasing relaxation time decreases with the increase of on-off time in the magnetic field. In the same magnetic field, the larger the volume fraction, the smaller the minimum value of the light transmission. Correspondingly, the time dropping to the minimum and returning to the maximum of the light transmission becomes shorter. The formation of particle chains and the micro-movement of chain in the ferrofluids are discussed and the micro-mechanism of the experimental results is analyzed qualitatively.

Cite this article

HAN Shaona;CHENG Hua . Field-induced of Transmission Light Relaxation Response Behaviors of Ni2O3/Fe2O3 Nanocomposites Ferrofluids[J]. Science & Technology Review, 2013 , 31(27) : 55 -58 . DOI: 10.3981/j.issn.1000-7857.2013.27.008

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