青岛科技大学主页平台管理系统 chenkezheng--Home-- Magnetic monolayer film of oleic acid-stabilized Fe3O4 particles fabricated via Langmuir-Blodgett technique

陈克正

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Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Date of Birth:1965-10-27

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Magnetic monolayer film of oleic acid-stabilized Fe3O4 particles fabricated via Langmuir-Blodgett technique

Release time:2021-03-15 Hits:

Key Words:Monolayers; Fe3O4 particles; Langmuir-Blodgett films; X-ray diffraction; Magnetic properties; Oleic acid

Abstract:The fabrication of monolayer film of surfactant-stabilized magnetic Fe3O4 particles with a size range of 90150 nm via the Langmuir-Blodgett method is described in this paper. Magnetic Fe3O4 particles coated with oleic acid were firstly synthesized by a hydrothermal process, and then the particles were dispersed into chloroform. After that the Fe3O4 suspension was spread to the interface of air/water and transferred to the glass surface. The formation of the Langmuir monolayer of oleic acid-stabilized Fe3O4 particles at air/water interface was revealed with the pressure-area isotherm curves. The results of the surface pressure-area isotherm and Atomic Force Microscopy showed that this film is a well compressed monolayer of 2-dimensional Fe3O4 particles assembly. Magnetometry results showed that the saturation magnetization of Fe3O4 magnetic particles is 86.1 A.m(2)/kg at room temperature with an applied field of 0.6 T. (C) 2009 Elsevier B.V. All rights reserved.

Volume:518

Issue:1

Translation or Not:no

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