Study the Ferro-Surface Tension on Magnetization Degree of Ferrofluid

Je Ee Ho; Da Chih Chen

doi:10.4028/www.scientific.net/AMR.779-780.101

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 779-780Study the Ferro-Surface Tension on Magnetization...

Study the Ferro-Surface Tension on Magnetization Degree of Ferrofluid

Abstract:

Surface tension of ferrofluid, an important parameter enclosing the boundary condition of ferro-hydrodynamic ( FHD ) problem, is investigated in this study. Referred to modified Langevin function and apparent weight loss theory, an auxiliary experimental mechanism of ring-pull method is then designed and set up, which will be used to determine the surface tension of testing sample through various magnetization degree induced by field intensity. While compared with the results predicted from Rayleigh theory using commercial product of Matsumoto Co., an excellent agreement is delivered within the working magnetic intensity 0~40 mT. Here dimensionless parameter α is found to dorminate the prompt increase of surface tension coefficient as the ferro-magnetization ratio reaches at 70 % saturation magnetization. .

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Periodical:

Advanced Materials Research (Volumes 779-780)

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101-104

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.779-780.101

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Online since:

September 2013

Authors:

Je Ee Ho, Da Chih Chen

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Surface Tension on Magnetization

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References

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