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Fractal Structures on Fe3O4Ferrofluid: A Small-Angle Neutron Scattering Study

Putra, Edy Giri Rachman and Seong, Baek Seok and Shin, Eunjoo and Ikram, Abarrul and Ani, Sistin Ari and Darminto, Darminto (2010) Fractal Structures on Fe3O4Ferrofluid: A Small-Angle Neutron Scattering Study. Journal of Physics: Conference Series, 247. 012028. ISSN 1742-6596

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Abstract

A small-angle neutron scattering (SANS) which is a powerful technique to reveal the large scale structures was applied to investigate the fractal structures of water-based Fe3O4 ferrofluid, magnetic fluid. The natural magnetite Fe3O4 from iron sand of several rivers in East Java Province of Indonesia was extracted and purified using magnetic separator. Four different ferrofluid concentrations, i.e. 0.5, 1.0, 2.0 and 3.0 Molar (M) were synthesized through a coprecipitation method and then dispersed in tetramethyl ammonium hydroxide (TMAH) as surfactant. The fractal aggregates in ferrofluid samples were observed from their SANS scattering distributions confirming the correlations to their concentrations. The mass fractal dimension changed from about 3 to 2 as ferrofluid concentration increased showing a deviation slope at intermediate scattering vector q range. The size of primary magnetic particle as a building block was determined by fitting the scattering profiles with a log-normal sphere model calculation. The mean average size of those magnetic particles is about 60 − 100 Å in diameter with a particle size distribution σ = 0.5.

Item Type: Article
Subjects: Daur Bahan Bakar Nuklir dan Bahan Maju > Bahan Struktur dan Bahan Maju > Teknik Sintesis Bahan Maju
Divisions: Pusat Sains dan Teknologi Bahan Maju
Depositing User: EDITOR PSTBM BATAN
Date Deposited: 01 Dec 2018 11:47
Last Modified: 01 Dec 2018 11:47
URI: http://repo-nkm.batan.go.id/id/eprint/7197

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